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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: JaQ8kLXaUGvt7jmWTgwm1oRaUnbZ9r31HlnKAE8Rjw2M+N+KbUNDfC6L5Vyf+seLiUzfPF1f0dmjj4QPUYCR9gBTrokLflSnMhlv+/x1oDOHzo5yFP9VhGJbXvJ9EuNq6zlzDTTwN2VX2+vODrorv4edjxlj1vI0fiUh34DD880O/L6uQz+Mef4WlrLglYqNOa8ADoYOIKqxC8Qn/qROAIZ+/gVQ+0LVimV7HdJD3II8yNE/elCBL8f7HuogKb8LRTz77fQdCiLN8nA022hvC0A+nDgzAqiVoJCbNcLvyL53zqtLRoW2pYaRSfPNSw2VUdI2za9lmn2Zk9qmPwA75Jj/wfULrjUNeLjn3itcHn1fsmeY04NQknYly+93LwXwBiNcgSDVLGTqTX7rRY04r2uniQdF3aqmIcHg4ZhAp42xy+lnBf4dQGUugNexlha7 X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Sep 2026 13:15:01.1101 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 09aa66b9-6361-4648-86bf-08df1ef4d582 X-MS-Exchange-CrossTenant-Id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=f34e5979-57d9-4aaa-ad4d-b122a662184d;Ip=[4.158.2.129];Helo=[outbound-uk1.az.dlp.m.darktrace.com] X-MS-Exchange-CrossTenant-AuthSource: ZR1PEPF0000E6B7.eurprd07.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DU0PR08MB7613 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260930_061514_869859_3CB2E244 X-CRM114-Status: GOOD ( 16.33 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: vladimir.murzin@arm.com, ryan.roberts@arm.com, usama.anjum@arm.com, peterz@infradead.org, maz@kernel.org, david.laight.linux@gmail.com, stable@vger.kernel.org, james.morse@arm.com, yang@os.amperecomputing.com, cl@gentwo.org, ruanjinjie@huawei.com, david@kernel.org, ljs@kernel.org, Will Deacon , ardb@kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 24/09/2026 5:03 pm, Catalin Marinas wrote: > On Tue, 08 Sep 2026 16:17:20 +0100, Mark Rutland wrote: >> This series reworks arm64's this_cpu_*() operations such that they do >> not need to disable preemption. The scheme is described in detail in patch 13, >> and is similar to the approach Heiko Carstens applied to s390 [1], which >> inspired this series. >> >> This scheme should build and function in all kernel configurations (e.g. >> regardless of KPTI, SW PAN, CNP, VA BITS), and has no dependency on new >> architectural features. The fixup logic should "just work" with kprobes, >> etc, and I don't expect that this will need to become more complicated. >> >> [...] > > Applied to arm64 (for-next/preemptible-this-cpu), thanks! > > Patches 1-3 are already upstream as fixes (in -rc4, used as a base for > for-next/core). I fixed some minor comment typos in a couple of patches, > I haven't touched the code. > > On v2, Usama reported performance regression in perf/sched and > perf/futex benchmarks that have not been addressed yet. It would be good > to run the tests again on this version, in case they were just noise. I > don't see why these would regress, maybe because of pt_regs being larger > and we get some more cache misses? I've just performed testing on arm64 for-next/core as it is and by reverting this entire series: aws-m7g.metal: 21 improvements 1 regression AmpereOne: 35 improvements 2 regression Results for SUT Class aws-m7g.metal: +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | Benchmark | Result Class | arm64-core-no-mark21-20260929-m7g (base) | arm64-core-mark21-20260929-m7g | +=========================+==========================================================+============================================+==================================+ | lmbench/lat-mem-rd | size:4MB P:1 stride:128B rnd_read_lat (ns) | 25.36 | -3.89% | | | size:4MB P:1 stride:128B seq_read_lat (ns) | 3.00 | 0.61% | | | size:16MB P:1 stride:128B rnd_read_lat (ns) | 28.17 | -4.00% | | | size:16MB P:1 stride:128B seq_read_lat (ns) | 2.89 | -1.95% | | | size:64MB P:1 stride:128B rnd_read_lat (ns) | 102.19 | 0.29% | | | size:64MB P:1 stride:128B seq_read_lat (ns) | 5.42 | -1.17% | | | size:256MB P:1 stride:128B rnd_read_lat (ns) | 113.45 | -0.66% | | | size:256MB P:1 stride:128B seq_read_lat (ns) | 5.56 | -0.59% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | micromm/fork | fork: p:1, d:10 (seconds) | 0.0076 | -2.29% | | | fork: p:512, d:10 (seconds) | 0.0055 | 0.32% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | micromm/munmap | munmap: p:1, d:10 (seconds) | 0.061 | (I) 40.50% | | | munmap: p:512, d:10 (seconds) | 0.0046 | (I) 2.64% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | micromm/vmalloc | fix_align_alloc_test: p:1, h:0, l:500000 (usec) | 635669.17 | (I) 8.06% | | | fix_size_alloc_test: p:1, h:0, l:500000 (usec) | 374395.50 | (I) 4.24% | | | fix_size_alloc_test: p:4, h:0, l:500000 (usec) | 454288.83 | (I) 7.98% | | | fix_size_alloc_test: p:16, h:0, l:500000 (usec) | 870184.17 | (I) 19.28% | | | fix_size_alloc_test: p:16, h:1, l:500000 (usec) | 813688.83 | (I) 15.82% | | | fix_size_alloc_test: p:64, h:0, l:100000 (usec) | 500721.33 | (I) 28.32% | | | fix_size_alloc_test: p:64, h:1, l:100000 (usec) | 465855.33 | (I) 22.94% | | | fix_size_alloc_test: p:256, h:0, l:100000 (usec) | 1820499.17 | (I) 31.59% | | | fix_size_alloc_test: p:256, h:1, l:100000 (usec) | 1706893.17 | (I) 25.98% | | | fix_size_alloc_test: p:512, h:0, l:100000 (usec) | 3566528.17 | (I) 32.81% | | | fix_size_alloc_test: p:512, h:1, l:100000 (usec) | 2626046.67 | (I) 36.14% | | | full_fit_alloc_test: p:1, h:0, l:500000 (usec) | 558588.00 | -0.07% | | | kvfree_rcu_1_arg_vmalloc_test: p:1, h:0, l:500000 (usec) | 359429.83 | 0.20% | | | kvfree_rcu_2_arg_vmalloc_test: p:1, h:0, l:500000 (usec) | 359256.33 | 1.15% | | | long_busy_list_alloc_test: p:1, h:0, l:500000 (usec) | 4388243.50 | (I) 25.27% | | | pcpu_alloc_test: p:1, h:0, l:500000 (usec) | 197834.17 | 0.40% | | | random_size_align_alloc_test: p:1, h:0, l:500000 (usec) | 758328.83 | (I) 8.63% | | | random_size_alloc_test: p:1, h:0, l:500000 (usec) | 2306188.50 | (I) 24.32% | | | vm_map_ram_test: p:1, h:0, l:500000 (usec) | 81248.50 | 0.80% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | mmtests/hackbench | hackbench-process-pipes-1 (seconds) | 0.15 | -1.56% | | | hackbench-process-pipes-4 (seconds) | 0.39 | 1.85% | | | hackbench-process-pipes-7 (seconds) | 0.66 | -3.13% | | | hackbench-process-pipes-12 (seconds) | 1.11 | -0.37% | | | hackbench-process-pipes-21 (seconds) | 1.48 | -0.28% | | | hackbench-process-pipes-30 (seconds) | 1.87 | 0.62% | | | hackbench-process-pipes-48 (seconds) | 2.57 | 0.81% | | | hackbench-process-pipes-79 (seconds) | 3.62 | 1.44% | | | hackbench-process-pipes-110 (seconds) | 4.70 | 1.42% | | | hackbench-process-pipes-141 (seconds) | 5.81 | 1.59% | | | hackbench-process-pipes-172 (seconds) | 6.97 | 1.65% | | | hackbench-process-pipes-203 (seconds) | 8.14 | 1.63% | | | hackbench-process-pipes-234 (seconds) | 9.34 | 1.85% | | | hackbench-process-pipes-256 (seconds) | 10.16 | 1.88% | | | hackbench-process-sockets-1 (seconds) | 0.28 | 1.02% | | | hackbench-process-sockets-4 (seconds) | 0.62 | 0.05% | | | hackbench-process-sockets-7 (seconds) | 0.99 | 0.32% | | | hackbench-process-sockets-12 (seconds) | 1.60 | 0.46% | | | hackbench-process-sockets-21 (seconds) | 2.76 | 0.47% | | | hackbench-process-sockets-30 (seconds) | 3.94 | 0.67% | | | hackbench-process-sockets-48 (seconds) | 6.29 | 0.65% | | | hackbench-process-sockets-79 (seconds) | 9.78 | 0.26% | | | hackbench-process-sockets-110 (seconds) | 13.60 | -0.33% | | | hackbench-process-sockets-141 (seconds) | 17.53 | -0.59% | | | hackbench-process-sockets-172 (seconds) | 21.74 | -0.84% | | | hackbench-process-sockets-203 (seconds) | 25.95 | -1.06% | | | hackbench-process-sockets-234 (seconds) | 30.33 | -1.22% | | | hackbench-process-sockets-256 (seconds) | 33.43 | -1.23% | | | hackbench-thread-pipes-1 (seconds) | 0.18 | 0.28% | | | hackbench-thread-pipes-4 (seconds) | 0.39 | -0.50% | | | hackbench-thread-pipes-7 (seconds) | 0.68 | 0.00% | | | hackbench-thread-pipes-12 (seconds) | 1.14 | -0.88% | | | hackbench-thread-pipes-21 (seconds) | 1.52 | -0.28% | | | hackbench-thread-pipes-30 (seconds) | 1.94 | -0.08% | | | hackbench-thread-pipes-48 (seconds) | 2.68 | -0.33% | | | hackbench-thread-pipes-79 (seconds) | 3.68 | 0.01% | | | hackbench-thread-pipes-110 (seconds) | 4.82 | 0.41% | | | hackbench-thread-pipes-141 (seconds) | 5.94 | -0.26% | | | hackbench-thread-pipes-172 (seconds) | 7.17 | 0.01% | | | hackbench-thread-pipes-203 (seconds) | 8.39 | 0.06% | | | hackbench-thread-pipes-234 (seconds) | 9.64 | 0.09% | | | hackbench-thread-pipes-256 (seconds) | 10.51 | -0.11% | | | hackbench-thread-sockets-1 (seconds) | 0.30 | 1.57% | | | hackbench-thread-sockets-4 (seconds) | 0.64 | 0.68% | | | hackbench-thread-sockets-7 (seconds) | 1.00 | 1.13% | | | hackbench-thread-sockets-12 (seconds) | 1.60 | 0.69% | | | hackbench-thread-sockets-21 (seconds) | 2.72 | 0.44% | | | hackbench-thread-sockets-30 (seconds) | 3.86 | 0.37% | | | hackbench-thread-sockets-48 (seconds) | 6.13 | 0.26% | | | hackbench-thread-sockets-79 (seconds) | 9.51 | -0.17% | | | hackbench-thread-sockets-110 (seconds) | 13.22 | 0.04% | | | hackbench-thread-sockets-141 (seconds) | 17.02 | -0.13% | | | hackbench-thread-sockets-172 (seconds) | 21.15 | -0.13% | | | hackbench-thread-sockets-203 (seconds) | 25.32 | -0.16% | | | hackbench-thread-sockets-234 (seconds) | 29.59 | -0.08% | | | hackbench-thread-sockets-256 (seconds) | 32.62 | -0.15% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | mmtests/kernbench | kernbench-elsp-64 (seconds) | 359.85 | 0.24% | | | kernbench-syst-64 (seconds) | 1130.19 | (I) 4.44% | | | kernbench-user-64 (seconds) | 19739.56 | 0.10% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | mmtests/sysbench-cpu | sysbenchcpu-1 (ops/second) | 834.34 | -0.01% | | | sysbenchcpu-4 (ops/second) | 3337.18 | -0.01% | | | sysbenchcpu-7 (ops/second) | 5839.81 | -0.01% | | | sysbenchcpu-12 (ops/second) | 10010.66 | -0.01% | | | sysbenchcpu-21 (ops/second) | 17517.47 | -0.01% | | | sysbenchcpu-30 (ops/second) | 25023.23 | -0.01% | | | sysbenchcpu-48 (ops/second) | 40032.51 | -0.01% | | | sysbenchcpu-79 (ops/second) | 53376.78 | -0.02% | | | sysbenchcpu-110 (ops/second) | 53377.41 | -0.02% | | | sysbenchcpu-128 (ops/second) | 53379.94 | -0.03% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | mmtests/sysbench-mutex | sysbenchmutex-1 (usec) | 194.30 | -0.01% | | | sysbenchmutex-4 (usec) | 200.58 | 0.01% | | | sysbenchmutex-7 (usec) | 200.95 | -0.14% | | | sysbenchmutex-12 (usec) | 201.54 | -0.18% | | | sysbenchmutex-21 (usec) | 202.49 | 0.22% | | | sysbenchmutex-30 (usec) | 203.24 | 0.22% | | | sysbenchmutex-48 (usec) | 242.40 | 3.64% | | | sysbenchmutex-79 (usec) | 360.42 | 0.84% | | | sysbenchmutex-110 (usec) | 509.17 | 0.52% | | | sysbenchmutex-128 (usec) | 582.54 | 0.44% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | mmtests/sysbench-thread | sysbenchthread-1 (usec) | 0.37 | (I) 6.16% | | | sysbenchthread-4 (usec) | 0.55 | (I) 7.19% | | | sysbenchthread-7 (usec) | 2.68 | -19.77% | | | sysbenchthread-12 (usec) | 5.89 | 11.27% | | | sysbenchthread-21 (usec) | 11.84 | -0.66% | | | sysbenchthread-30 (usec) | 19.81 | 24.87% | | | sysbenchthread-48 (usec) | 33.30 | 21.51% | | | sysbenchthread-79 (usec) | 57.47 | -7.01% | | | sysbenchthread-110 (usec) | 92.38 | -3.64% | | | sysbenchthread-128 (usec) | 115.79 | 7.20% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | perf/futex | hash (ops/sec) | 2655172.83 | (I) 2.83% | | | lock-pi (ops/sec) | 281.00 | 0.00% | | | requeue (ms) | 0.027 | 3.30% | | | wake (ms) | 0.071 | -2.87% | | | wake-parallel (ms) | 0.0042 | 0.08% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | perf/mem | memset -k 1GB -f default -s 16GB (bytes/sec) | 65213616658.81 | -0.28% | | | mmap -p 1GB -f demand -s 32GB -l 5 (bytes/sec) | 64303069991.32 | -0.35% | | | mmap -p 4KB -f demand -s 32GB -l 5 (bytes/sec) | 49764611027.28 | 0.10% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | perf/sched | messaging -l 10000 (sec) | 1.32 | 0.67% | | | pipe (ops/sec) | 543170.30 | 7.68% | | | seccomp-notify (ops/sec) | 243035.63 | (R) -4.65% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | perf/syscall | basic (ops/sec) | 5162993.33 | 0.47% | | | execve (ops/sec) | 2329.13 | 1.72% | | | fork (ops/sec) | 4050.90 | 1.43% | | | getpgid (ops/sec) | 5174345.87 | (I) 2.15% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | sockperf/echo-lat-tcp | ping-pong m:64B t:10s, avg_latency (usec) | 4.86 | -0.10% | | | ping-pong m:64B t:10s, latency_p99 (usec) | 5.14 | -0.20% | | | ping-pong m:256B t:10s, avg_latency (usec) | 4.97 | -0.37% | | | ping-pong m:256B t:10s, latency_p99 (usec) | 5.31 | -0.15% | | | ping-pong m:1024B t:10s, avg_latency (usec) | 5.09 | 0.00% | | | ping-pong m:1024B t:10s, latency_p99 (usec) | 5.40 | -0.16% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | sockperf/echo-lat-udp | ping-pong m:64B t:10s, avg_latency (usec) | 4.27 | 0.77% | | | ping-pong m:64B t:10s, latency_p99 (usec) | 5.03 | -0.74% | | | ping-pong m:256B t:10s, avg_latency (usec) | 4.34 | 0.99% | | | ping-pong m:256B t:10s, latency_p99 (usec) | 5.10 | 0.77% | | | ping-pong m:1024B t:10s, avg_latency (usec) | 4.43 | -0.16% | | | ping-pong m:1024B t:10s, latency_p99 (usec) | 5.26 | 0.66% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | sockperf/packet-tp-tcp | throughput m:64B t:10s, msg_rate (msg/sec) | 1339599.17 | 2.00% | | | throughput m:64B t:10s, throughput_mbps (Mbps) | 654.10 | 2.00% | | | throughput m:256B t:10s, msg_rate (msg/sec) | 2248084.00 | 0.76% | | | throughput m:256B t:10s, throughput_mbps (Mbps) | 4390.79 | 0.76% | | | throughput m:1024B t:10s, msg_rate (msg/sec) | 1587001.83 | -1.56% | | | throughput m:1024B t:10s, throughput_mbps (Mbps) | 12398.45 | -1.56% | | | throughput m:1472B t:10s, msg_rate (msg/sec) | 1398038.00 | -0.50% | | | throughput m:1472B t:10s, throughput_mbps (Mbps) | 15700.62 | -0.50% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | sockperf/packet-tp-udp | throughput m:64B t:10s, msg_rate (msg/sec) | 401108.00 | -0.79% | | | throughput m:64B t:10s, throughput_mbps (Mbps) | 195.85 | -0.79% | | | throughput m:256B t:10s, msg_rate (msg/sec) | 403048.17 | -2.33% | | | throughput m:256B t:10s, throughput_mbps (Mbps) | 787.20 | -2.33% | | | throughput m:1024B t:10s, msg_rate (msg/sec) | 390376.50 | -2.26% | | | throughput m:1024B t:10s, throughput_mbps (Mbps) | 3049.82 | -2.26% | | | throughput m:1472B t:10s, msg_rate (msg/sec) | 387575.83 | -1.26% | | | throughput m:1472B t:10s, throughput_mbps (Mbps) | 4352.66 | -1.26% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | speedometer/v2.0 | score (runs/min) | 158.00 | 0.00% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | speedometer/v2.1 | score (runs/min) | 165.00 | 0.91% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | syscall/getpid | mean (ns) | 195.17 | 1.04% | | | p99 (ns) | 199.67 | -1.16% | | | p99.9 (ns) | 201.00 | -1.47% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | syscall/getppid | mean (ns) | 197.00 | 1.37% | | | p99 (ns) | 203.67 | 2.60% | | | p99.9 (ns) | 206.50 | 3.08% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ | syscall/invalid | mean (ns) | 187.33 | 0.81% | | | p99 (ns) | 191.00 | 0.26% | | | p99.9 (ns) | 191.50 | 0.00% | +-------------------------+----------------------------------------------------------+--------------------------------------------+----------------------------------+ Results for SUT Class cesw-aarch64-ampereone-1s-a192-32x: +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | Benchmark | Result Class | arm64-core-no-mark21-20260929-ampereone (base) | arm64-core-mark21-20260929-ampereone | +=========================+==========================================================+==================================================+========================================+ | lmbench/lat-mem-rd | size:4MB P:1 stride:128B rnd_read_lat (ns) | 41.64 | 0.85% | | | size:4MB P:1 stride:128B seq_read_lat (ns) | 4.77 | 11.97% | | | size:16MB P:1 stride:128B rnd_read_lat (ns) | 42.74 | 1.73% | | | size:16MB P:1 stride:128B seq_read_lat (ns) | 2.95 | -0.42% | | | size:64MB P:1 stride:128B rnd_read_lat (ns) | 54.51 | 5.85% | | | size:64MB P:1 stride:128B seq_read_lat (ns) | 3.29 | -4.91% | | | size:256MB P:1 stride:128B rnd_read_lat (ns) | 150.17 | -0.30% | | | size:256MB P:1 stride:128B seq_read_lat (ns) | 6.21 | -0.58% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | micromm/fork | fork: p:1, d:10 (seconds) | 0.0084 | 1.11% | | | fork: p:512, d:10 (seconds) | 0.0048 | 0.88% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | micromm/munmap | munmap: p:1, d:10 (seconds) | 0.077 | (I) 30.07% | | | munmap: p:512, d:10 (seconds) | 0.022 | 0.68% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | micromm/vmalloc | fix_align_alloc_test: p:1, h:0, l:500000 (usec) | 725723.67 | (I) 18.02% | | | fix_size_alloc_test: p:1, h:0, l:500000 (usec) | 393933.50 | (I) 9.95% | | | fix_size_alloc_test: p:4, h:0, l:500000 (usec) | 516939.50 | (I) 23.67% | | | fix_size_alloc_test: p:16, h:0, l:500000 (usec) | 971323.17 | (I) 30.43% | | | fix_size_alloc_test: p:16, h:1, l:500000 (usec) | 915152.17 | (I) 25.96% | | | fix_size_alloc_test: p:64, h:0, l:100000 (usec) | 591172.17 | (I) 41.62% | | | fix_size_alloc_test: p:64, h:1, l:100000 (usec) | 544844.17 | (I) 34.58% | | | fix_size_alloc_test: p:256, h:0, l:100000 (usec) | 2166037.67 | (I) 46.80% | | | fix_size_alloc_test: p:256, h:1, l:100000 (usec) | 1994903.83 | (I) 43.54% | | | fix_size_alloc_test: p:512, h:0, l:100000 (usec) | 4203198.00 | (I) 48.54% | | | fix_size_alloc_test: p:512, h:1, l:100000 (usec) | 3003280.00 | (I) 66.11% | | | full_fit_alloc_test: p:1, h:0, l:500000 (usec) | 610786.67 | (I) 10.06% | | | kvfree_rcu_1_arg_vmalloc_test: p:1, h:0, l:500000 (usec) | 539508.33 | (I) 5.40% | | | kvfree_rcu_2_arg_vmalloc_test: p:1, h:0, l:500000 (usec) | 516781.83 | 4.94% | | | long_busy_list_alloc_test: p:1, h:0, l:500000 (usec) | 4941369.00 | (I) 39.67% | | | pcpu_alloc_test: p:1, h:0, l:500000 (usec) | 480082.17 | 0.12% | | | random_size_align_alloc_test: p:1, h:0, l:500000 (usec) | 887208.00 | (I) 8.63% | | | random_size_alloc_test: p:1, h:0, l:500000 (usec) | 2626017.00 | (I) 37.28% | | | vm_map_ram_test: p:1, h:0, l:500000 (usec) | 106035.00 | 2.38% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | mmtests/hackbench | hackbench-process-pipes-1 (seconds) | 0.26 | 0.20% | | | hackbench-process-pipes-4 (seconds) | 0.44 | -2.97% | | | hackbench-process-pipes-7 (seconds) | 0.53 | -0.47% | | | hackbench-process-pipes-12 (seconds) | 0.73 | 0.75% | | | hackbench-process-pipes-21 (seconds) | 1.12 | -0.82% | | | hackbench-process-pipes-30 (seconds) | 1.58 | -1.54% | | | hackbench-process-pipes-48 (seconds) | 2.81 | -0.05% | | | hackbench-process-pipes-79 (seconds) | 3.67 | 2.64% | | | hackbench-process-pipes-110 (seconds) | 3.53 | -1.03% | | | hackbench-process-pipes-141 (seconds) | 3.68 | 1.43% | | | hackbench-process-pipes-172 (seconds) | 4.00 | 0.44% | | | hackbench-process-pipes-203 (seconds) | 4.34 | -0.27% | | | hackbench-process-pipes-234 (seconds) | 4.65 | 0.83% | | | hackbench-process-pipes-265 (seconds) | 5.04 | -0.27% | | | hackbench-process-pipes-296 (seconds) | 5.37 | 0.54% | | | hackbench-process-sockets-1 (seconds) | 0.56 | 5.32% | | | hackbench-process-sockets-4 (seconds) | 0.66 | 3.91% | | | hackbench-process-sockets-7 (seconds) | 0.79 | -0.15% | | | hackbench-process-sockets-12 (seconds) | 1.22 | -0.79% | | | hackbench-process-sockets-21 (seconds) | 2.03 | -1.28% | | | hackbench-process-sockets-30 (seconds) | 2.88 | -1.69% | | | hackbench-process-sockets-48 (seconds) | 4.55 | -1.84% | | | hackbench-process-sockets-79 (seconds) | 7.62 | -1.81% | | | hackbench-process-sockets-110 (seconds) | 10.72 | -1.84% | | | hackbench-process-sockets-141 (seconds) | 13.88 | -1.87% | | | hackbench-process-sockets-172 (seconds) | 17.07 | -1.78% | | | hackbench-process-sockets-203 (seconds) | 20.28 | -1.63% | | | hackbench-process-sockets-234 (seconds) | 23.49 | -1.68% | | | hackbench-process-sockets-265 (seconds) | 26.77 | -1.66% | | | hackbench-process-sockets-296 (seconds) | 30.07 | -1.70% | | | hackbench-thread-pipes-1 (seconds) | 0.28 | 1.26% | | | hackbench-thread-pipes-4 (seconds) | 0.54 | -0.40% | | | hackbench-thread-pipes-7 (seconds) | 0.65 | 1.73% | | | hackbench-thread-pipes-12 (seconds) | 0.82 | -0.37% | | | hackbench-thread-pipes-21 (seconds) | 1.12 | 0.75% | | | hackbench-thread-pipes-30 (seconds) | 1.60 | 0.64% | | | hackbench-thread-pipes-48 (seconds) | 2.75 | 0.33% | | | hackbench-thread-pipes-79 (seconds) | 3.94 | -0.39% | | | hackbench-thread-pipes-110 (seconds) | 3.88 | -2.09% | | | hackbench-thread-pipes-141 (seconds) | 4.00 | -0.31% | | | hackbench-thread-pipes-172 (seconds) | 4.31 | -0.52% | | | hackbench-thread-pipes-203 (seconds) | 4.72 | 0.20% | | | hackbench-thread-pipes-234 (seconds) | 5.13 | 1.08% | | | hackbench-thread-pipes-265 (seconds) | 5.48 | -2.56% | | | hackbench-thread-pipes-296 (seconds) | 5.87 | -0.40% | | | hackbench-thread-sockets-1 (seconds) | 0.57 | 1.12% | | | hackbench-thread-sockets-4 (seconds) | 0.73 | 2.84% | | | hackbench-thread-sockets-7 (seconds) | 0.84 | -0.96% | | | hackbench-thread-sockets-12 (seconds) | 1.27 | -0.08% | | | hackbench-thread-sockets-21 (seconds) | 2.07 | -1.10% | | | hackbench-thread-sockets-30 (seconds) | 2.91 | -1.53% | | | hackbench-thread-sockets-48 (seconds) | 4.59 | -1.42% | | | hackbench-thread-sockets-79 (seconds) | 7.66 | -1.45% | | | hackbench-thread-sockets-110 (seconds) | 10.73 | -1.92% | | | hackbench-thread-sockets-141 (seconds) | 13.89 | -1.81% | | | hackbench-thread-sockets-172 (seconds) | 17.07 | -1.67% | | | hackbench-thread-sockets-203 (seconds) | 20.24 | -1.70% | | | hackbench-thread-sockets-234 (seconds) | 23.43 | -1.77% | | | hackbench-thread-sockets-265 (seconds) | 26.63 | -1.87% | | | hackbench-thread-sockets-296 (seconds) | 29.91 | -1.82% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | mmtests/kernbench | kernbench-elsp-192 (seconds) | 172.18 | 0.44% | | | kernbench-syst-192 (seconds) | 1755.36 | (I) 6.41% | | | kernbench-user-192 (seconds) | 22994.12 | 0.05% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | mmtests/sysbench-cpu | sysbenchcpu-1 (ops/second) | 232.13 | -0.01% | | | sysbenchcpu-4 (ops/second) | 929.37 | 0.06% | | | sysbenchcpu-7 (ops/second) | 1628.48 | -0.09% | | | sysbenchcpu-12 (ops/second) | 2791.82 | -0.63% | | | sysbenchcpu-21 (ops/second) | 4884.10 | 0.02% | | | sysbenchcpu-30 (ops/second) | 6976.07 | -0.02% | | | sysbenchcpu-48 (ops/second) | 11160.90 | -0.06% | | | sysbenchcpu-79 (ops/second) | 18354.35 | -0.14% | | | sysbenchcpu-110 (ops/second) | 25531.52 | -0.16% | | | sysbenchcpu-141 (ops/second) | 32597.33 | 0.00% | | | sysbenchcpu-172 (ops/second) | 39486.52 | -0.10% | | | sysbenchcpu-203 (ops/second) | 43977.55 | -0.43% | | | sysbenchcpu-234 (ops/second) | 44051.35 | -0.60% | | | sysbenchcpu-265 (ops/second) | 44152.90 | -0.36% | | | sysbenchcpu-296 (ops/second) | 44255.55 | -0.19% | | | sysbenchcpu-327 (ops/second) | 44225.89 | -0.42% | | | sysbenchcpu-358 (ops/second) | 44301.57 | -0.27% | | | sysbenchcpu-384 (ops/second) | 44171.27 | -0.04% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | mmtests/sysbench-mutex | sysbenchmutex-1 (usec) | 167.90 | -0.27% | | | sysbenchmutex-4 (usec) | 176.95 | 0.12% | | | sysbenchmutex-7 (usec) | 178.62 | -0.08% | | | sysbenchmutex-12 (usec) | 179.43 | -0.24% | | | sysbenchmutex-21 (usec) | 183.11 | -0.14% | | | sysbenchmutex-30 (usec) | 199.32 | -4.26% | | | sysbenchmutex-48 (usec) | 328.61 | -1.71% | | | sysbenchmutex-79 (usec) | 531.33 | -1.75% | | | sysbenchmutex-110 (usec) | 651.77 | 3.22% | | | sysbenchmutex-141 (usec) | 817.90 | -2.82% | | | sysbenchmutex-172 (usec) | 993.03 | 1.08% | | | sysbenchmutex-203 (usec) | 1140.15 | -1.22% | | | sysbenchmutex-234 (usec) | 1261.51 | -1.21% | | | sysbenchmutex-265 (usec) | 1458.96 | -2.62% | | | sysbenchmutex-296 (usec) | 1643.47 | 0.26% | | | sysbenchmutex-327 (usec) | 1770.20 | -0.67% | | | sysbenchmutex-358 (usec) | 1930.64 | -5.61% | | | sysbenchmutex-384 (usec) | 2135.30 | -2.11% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | mmtests/sysbench-thread | sysbenchthread-1 (usec) | 0.34 | (I) 6.77% | | | sysbenchthread-4 (usec) | 0.49 | 7.30% | | | sysbenchthread-7 (usec) | 3.89 | 12.19% | | | sysbenchthread-12 (usec) | 6.70 | -15.50% | | | sysbenchthread-21 (usec) | 18.05 | -9.78% | | | sysbenchthread-30 (usec) | 29.92 | 5.75% | | | sysbenchthread-48 (usec) | 48.52 | 5.21% | | | sysbenchthread-79 (usec) | 80.01 | 3.30% | | | sysbenchthread-110 (usec) | 115.83 | 5.85% | | | sysbenchthread-141 (usec) | 142.43 | -1.78% | | | sysbenchthread-172 (usec) | 171.79 | 2.44% | | | sysbenchthread-203 (usec) | 269.94 | -0.28% | | | sysbenchthread-234 (usec) | 294.78 | -7.66% | | | sysbenchthread-265 (usec) | 345.62 | -1.59% | | | sysbenchthread-296 (usec) | 419.84 | 7.43% | | | sysbenchthread-327 (usec) | 452.17 | 18.71% | | | sysbenchthread-358 (usec) | 515.08 | 12.55% | | | sysbenchthread-384 (usec) | 497.78 | 6.22% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | perf/futex | hash (ops/sec) | 2653557.20 | 7.63% | | | lock-pi (ops/sec) | 78.53 | 0.59% | | | requeue (ms) | 0.12 | (I) 2.94% | | | wake (ms) | 0.29 | -0.72% | | | wake-parallel (ms) | 0.0027 | (R) -10.60% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | perf/mem | memset -k 1GB -f default -s 16GB (bytes/sec) | 33861254728.37 | 0.04% | | | mmap -p 1GB -f demand -s 32GB -l 5 (bytes/sec) | 33677436964.25 | 0.44% | | | mmap -p 4KB -f demand -s 32GB -l 5 (bytes/sec) | 25464266889.26 | -0.94% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | perf/sched | messaging -l 10000 (sec) | 0.99 | -0.55% | | | pipe (ops/sec) | 319346.30 | -0.83% | | | seccomp-notify (ops/sec) | 130238.67 | (R) -2.86% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | perf/syscall | basic (ops/sec) | 7377677.90 | 1.14% | | | execve (ops/sec) | 1526.50 | (I) 4.25% | | | fork (ops/sec) | 2393.27 | (I) 4.30% | | | getpgid (ops/sec) | 7699746.87 | -0.93% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | sockperf/echo-lat-tcp | ping-pong m:64B t:10s, avg_latency (usec) | 8.09 | 1.82% | | | ping-pong m:64B t:10s, latency_p99 (usec) | 9.20 | 1.92% | | | ping-pong m:256B t:10s, avg_latency (usec) | 8.15 | 1.93% | | | ping-pong m:256B t:10s, latency_p99 (usec) | 9.21 | 1.95% | | | ping-pong m:1024B t:10s, avg_latency (usec) | 8.35 | 1.75% | | | ping-pong m:1024B t:10s, latency_p99 (usec) | 9.39 | 1.79% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | sockperf/echo-lat-udp | ping-pong m:64B t:10s, avg_latency (usec) | 6.98 | (I) 4.78% | | | ping-pong m:64B t:10s, latency_p99 (usec) | 9.15 | (I) 3.76% | | | ping-pong m:256B t:10s, avg_latency (usec) | 7.04 | (I) 4.08% | | | ping-pong m:256B t:10s, latency_p99 (usec) | 9.20 | (I) 3.37% | | | ping-pong m:1024B t:10s, avg_latency (usec) | 7.29 | (I) 4.28% | | | ping-pong m:1024B t:10s, latency_p99 (usec) | 9.47 | 3.08% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | sockperf/packet-tp-tcp | throughput m:64B t:10s, msg_rate (msg/sec) | 2741038.17 | -0.59% | | | throughput m:64B t:10s, throughput_mbps (Mbps) | 1338.40 | -0.59% | | | throughput m:256B t:10s, msg_rate (msg/sec) | 2287435.17 | 0.08% | | | throughput m:256B t:10s, throughput_mbps (Mbps) | 4467.65 | 0.08% | | | throughput m:1024B t:10s, msg_rate (msg/sec) | 1681400.50 | -0.11% | | | throughput m:1024B t:10s, throughput_mbps (Mbps) | 13135.94 | -0.11% | | | throughput m:1472B t:10s, msg_rate (msg/sec) | 1527520.00 | 0.14% | | | throughput m:1472B t:10s, throughput_mbps (Mbps) | 17154.77 | 0.14% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | sockperf/packet-tp-udp | throughput m:64B t:10s, msg_rate (msg/sec) | 428854.17 | (I) 4.13% | | | throughput m:64B t:10s, throughput_mbps (Mbps) | 209.40 | (I) 4.13% | | | throughput m:256B t:10s, msg_rate (msg/sec) | 424411.50 | (I) 3.17% | | | throughput m:256B t:10s, throughput_mbps (Mbps) | 828.93 | (I) 3.17% | | | throughput m:1024B t:10s, msg_rate (msg/sec) | 399098.33 | (I) 5.30% | | | throughput m:1024B t:10s, throughput_mbps (Mbps) | 3117.96 | (I) 5.30% | | | throughput m:1472B t:10s, msg_rate (msg/sec) | 399116.00 | (I) 4.98% | | | throughput m:1472B t:10s, throughput_mbps (Mbps) | 4482.26 | (I) 4.98% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | speedometer/v2.0 | score (runs/min) | 181.33 | -0.09% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | speedometer/v2.1 | score (runs/min) | 189.67 | -0.09% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | syscall/getpid | mean (ns) | 145.83 | 0.11% | | | p99 (ns) | 160.00 | 0.00% | | | p99.9 (ns) | 180.00 | 0.00% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | syscall/getppid | mean (ns) | 146.67 | -0.68% | | | p99 (ns) | 160.00 | 0.00% | | | p99.9 (ns) | 180.00 | -1.82% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ | syscall/invalid | mean (ns) | 136.00 | -0.49% | | | p99 (ns) | 143.33 | -6.52% | | | p99.9 (ns) | 180.00 | 0.00% | +-------------------------+----------------------------------------------------------+--------------------------------------------------+----------------------------------------+ -- Thanks, Usama