From: kernel test robot <oliver.sang@intel.com>
To: Jeff Layton <jlayton@kernel.org>
Cc: <oe-lkp@lists.linux.dev>, <lkp@intel.com>,
Chuck Lever <chuck.lever@oracle.com>, <linux-nfs@vger.kernel.org>,
<oliver.sang@intel.com>
Subject: [cel:nfsd-testing] [nfsd] e491b8e430: postmark.transactions 15.2% regression
Date: Fri, 13 Feb 2026 10:04:08 +0800 [thread overview]
Message-ID: <202602130940.4cf74a62-lkp@intel.com> (raw)
Hello,
kernel test robot noticed a 15.2% regression of postmark.transactions on:
commit: e491b8e4300585da77a96251f77577ebcaa7c5fc ("nfsd: remove NFSD_V4_DELEG_TIMESTAMPS Kconfig option")
https://git.kernel.org/cgit/linux/kernel/git/cel/linux nfsd-testing
testcase: postmark
config: x86_64-rhel-9.4
compiler: gcc-14
test machine: 224 threads 4 sockets Intel(R) Xeon(R) Platinum 8380H CPU @ 2.90GHz (Cooper Lake) with 192G memory
parameters:
disk: 1HDD
fs: ext4
fs1: nfsv4
number: 1000n
trans: 10000s
subdirs: 100d
cpufreq_governor: performance
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202602130940.4cf74a62-lkp@intel.com
Details are as below:
-------------------------------------------------------------------------------------------------->
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260213/202602130940.4cf74a62-lkp@intel.com
=========================================================================================
compiler/cpufreq_governor/disk/fs1/fs/kconfig/number/rootfs/subdirs/tbox_group/testcase/trans:
gcc-14/performance/1HDD/nfsv4/ext4/x86_64-rhel-9.4/1000n/debian-13-x86_64-20250902.cgz/100d/lkp-cpl-4sp2/postmark/10000s
commit:
49b14981e9 ("nfsd: add a runtime switch for disabling delegated timestamps")
e491b8e430 ("nfsd: remove NFSD_V4_DELEG_TIMESTAMPS Kconfig option")
49b14981e913ca6a e491b8e4300585da77a96251f77
---------------- ---------------------------
%stddev %change %stddev
\ | \
0.00 -0.0 0.00 ± 2% mpstat.cpu.all.usr%
115863 -7.5% 107174 ± 6% numa-numastat.node0.other_node
2.657e+08 +17.2% 3.114e+08 turbostat.IRQ
102394 +15.4% 118164 vmstat.memory.buff
2.634e+11 +17.2% 3.088e+11 cpuidle..time
2.652e+08 +17.2% 3.108e+08 cpuidle..usage
1291 +15.7% 1494 uptime.boot
284803 +15.8% 329732 uptime.idle
102296 +15.5% 118107 meminfo.Buffers
177444 +8.3% 192096 meminfo.Inactive
177444 +8.3% 192096 meminfo.Inactive(file)
2980 -1.3% 2940 perf-stat.i.context-switches
234.45 -1.2% 231.74 perf-stat.i.cpu-migrations
2977 -1.3% 2938 perf-stat.ps.context-switches
234.25 -1.1% 231.57 perf-stat.ps.cpu-migrations
1.508e+12 +16.6% 1.759e+12 perf-stat.total.instructions
14498 ± 95% +2523.2% 380328 ±110% numa-vmstat.node0.nr_file_pages
2.11 ± 83% +3.4e+05% 7159 ±120% numa-vmstat.node0.nr_mapped
7603 ± 8% +89.3% 14395 ± 30% numa-vmstat.node0.nr_slab_reclaimable
115863 -7.5% 107174 ± 6% numa-vmstat.node0.numa_other
881153 -77.8% 195595 ±167% numa-vmstat.node1.nr_file_pages
493.21 ± 22% -28.2% 354.06 ± 20% numa-vmstat.node1.nr_page_table_pages
18656 ± 11% -51.0% 9134 ± 56% numa-vmstat.node1.nr_slab_reclaimable
859699 -79.3% 177669 ±189% numa-vmstat.node1.nr_unevictable
859699 -79.3% 177669 ±189% numa-vmstat.node1.nr_zone_unevictable
28413 ±130% +136.9% 67303 ± 45% numa-vmstat.node2.nr_anon_pages
57993 ± 95% +2523.3% 1521337 ±110% numa-meminfo.node0.FilePages
30413 ± 8% +89.3% 57581 ± 30% numa-meminfo.node0.KReclaimable
8.46 ± 83% +3.4e+05% 28639 ±120% numa-meminfo.node0.Mapped
30413 ± 8% +89.3% 57581 ± 30% numa-meminfo.node0.SReclaimable
142923 ± 4% +23.1% 175930 ± 9% numa-meminfo.node0.Slab
3524608 -77.8% 782383 ±167% numa-meminfo.node1.FilePages
74624 ± 11% -51.0% 36538 ± 56% numa-meminfo.node1.KReclaimable
1968 ± 22% -28.0% 1417 ± 20% numa-meminfo.node1.PageTables
74624 ± 11% -51.0% 36538 ± 56% numa-meminfo.node1.SReclaimable
3438799 -79.3% 710678 ±189% numa-meminfo.node1.Unevictable
113654 ±130% +136.9% 269213 ± 45% numa-meminfo.node2.AnonPages
623405 ± 5% +231.4% 2066089 ± 81% numa-meminfo.node2.MemUsed
75814 +2.9% 78028 proc-vmstat.nr_dirtied
44356 +8.3% 48032 proc-vmstat.nr_inactive_file
40258 +1.1% 40713 proc-vmstat.nr_slab_reclaimable
75355 +3.0% 77604 proc-vmstat.nr_written
44356 +8.3% 48032 proc-vmstat.nr_zone_inactive_file
3089765 +12.8% 3486001 proc-vmstat.numa_hit
2741896 +14.5% 3138225 proc-vmstat.numa_local
3492032 +12.2% 3917120 proc-vmstat.pgalloc_normal
3585459 +16.3% 4168177 proc-vmstat.pgfault
3358355 +12.4% 3774423 proc-vmstat.pgfree
778674 +9.6% 853071 proc-vmstat.pgpgout
150505 +16.4% 175141 proc-vmstat.pgreuse
4.85 -15.3% 4.11 postmark.creation_mixed_trans
71148 -14.9% 60564 postmark.data_read
84089 -14.9% 71580 postmark.data_written
19.53 -30.9% 13.50 postmark.deletion_alone
4.98 -15.2% 4.22 postmark.deletion_mixed_trans
4.87 -15.4% 4.12 postmark.files_appended
5.10 -14.9% 4.34 postmark.files_created
5.10 -14.9% 4.34 postmark.files_deleted
4.94 -15.3% 4.18 postmark.files_read
1174 +17.3% 1377 postmark.time.elapsed_time
1174 +17.3% 1377 postmark.time.elapsed_time.max
43653 -1.7% 42917 postmark.time.voluntary_context_switches
9.83 -15.2% 8.33 postmark.transactions
1.76 -0.1 1.68 perf-profile.calltrace.cycles-pp.sched_balance_rq.sched_balance_domains.handle_softirqs.__irq_exit_rcu.sysvec_apic_timer_interrupt
1.89 -0.1 1.82 ± 2% perf-profile.calltrace.cycles-pp.sched_balance_domains.handle_softirqs.__irq_exit_rcu.sysvec_apic_timer_interrupt.asm_sysvec_apic_timer_interrupt
1.22 ± 2% -0.1 1.16 perf-profile.calltrace.cycles-pp.sched_balance_find_src_group.sched_balance_rq.sched_balance_domains.handle_softirqs.__irq_exit_rcu
1.12 -0.0 1.08 perf-profile.calltrace.cycles-pp.update_sd_lb_stats.sched_balance_find_src_group.sched_balance_rq.sched_balance_domains.handle_softirqs
1.89 -0.1 1.80 perf-profile.children.cycles-pp.sched_balance_rq
1.35 ± 2% -0.1 1.28 perf-profile.children.cycles-pp.sched_balance_find_src_group
1.91 ± 2% -0.1 1.84 ± 2% perf-profile.children.cycles-pp.sched_balance_domains
1.25 -0.1 1.19 perf-profile.children.cycles-pp.update_sd_lb_stats
0.36 ± 3% -0.1 0.30 ± 8% perf-profile.children.cycles-pp.ksys_read
0.95 ± 3% -0.0 0.90 perf-profile.children.cycles-pp.update_sg_lb_stats
0.08 ± 10% -0.0 0.06 ± 12% perf-profile.children.cycles-pp.filemap_map_pages
0.08 ± 11% -0.0 0.07 ± 12% perf-profile.children.cycles-pp.do_read_fault
0.27 ± 6% +0.0 0.30 ± 9% perf-profile.children.cycles-pp.timerqueue_del
0.42 ± 2% +0.1 0.50 ± 2% perf-profile.children.cycles-pp.update_rq_clock
0.19 ± 5% -0.0 0.14 ± 15% perf-profile.self.cycles-pp.update_rq_clock_task
0.08 ± 17% -0.0 0.05 ± 55% perf-profile.self.cycles-pp.invoke_rcu_core
0.09 ± 14% +0.0 0.11 ± 10% perf-profile.self.cycles-pp.ct_kernel_enter
0.27 ± 7% +0.0 0.32 ± 6% perf-profile.self.cycles-pp.acpi_idle_enter
2.38 ± 67% -62.1% 0.90 ± 42% sched_debug.cfs_rq:/.removed.runnable_avg.avg
2.38 ± 67% -62.1% 0.90 ± 42% sched_debug.cfs_rq:/.removed.util_avg.avg
685672 +13.2% 775891 sched_debug.cpu.clock.avg
685684 +13.2% 775903 sched_debug.cpu.clock.max
685660 +13.2% 775880 sched_debug.cpu.clock.min
681754 +13.1% 771301 sched_debug.cpu.clock_task.avg
682275 +13.1% 771929 sched_debug.cpu.clock_task.max
668165 +13.4% 757950 sched_debug.cpu.clock_task.min
142.32 ± 4% +13.6% 161.75 sched_debug.cpu.curr->pid.avg
28132 +10.8% 31168 sched_debug.cpu.curr->pid.max
1934 +11.2% 2151 sched_debug.cpu.curr->pid.stddev
0.01 ± 4% +8.8% 0.01 ± 6% sched_debug.cpu.nr_running.avg
8672 +13.0% 9796 sched_debug.cpu.nr_switches.avg
2248 +14.2% 2566 sched_debug.cpu.nr_switches.min
19783 ± 10% +20.7% 23875 ± 10% sched_debug.cpu.nr_switches.stddev
5.44 ± 6% +13.9% 6.19 ± 5% sched_debug.cpu.nr_uninterruptible.stddev
685660 +13.2% 775880 sched_debug.cpu_clk
684805 +13.2% 775024 sched_debug.ktime
686649 +13.1% 776915 sched_debug.sched_clk
0.89 -11.1% 0.79 nfsstat.Client.nfs.v4.access.percent
4.36 ± 2% -7.6% 4.03 ± 2% nfsstat.Client.nfs.v4.close.percent
1.32 -12.3% 1.16 nfsstat.Client.nfs.v4.create.percent
0.01 -14.7% 0.01 nfsstat.Client.nfs.v4.create_session.percent
3655 +11.0% 4058 nfsstat.Client.nfs.v4.delegreturn
15.03 +8.7% 16.33 nfsstat.Client.nfs.v4.delegreturn.percent
0.02 -14.5% 0.02 nfsstat.Client.nfs.v4.exchange_id.percent
0.02 -14.5% 0.02 nfsstat.Client.nfs.v4.fsinfo.percent
10.49 -5.6% 9.90 nfsstat.Client.nfs.v4.getattr.percent
0.04 -14.7% 0.03 nfsstat.Client.nfs.v4.lookup.percent
0.01 -14.7% 0.01 nfsstat.Client.nfs.v4.lookup_root.percent
0.01 -14.7% 0.01 nfsstat.Client.nfs.v4.null.percent
1417 +21.0% 1714 nfsstat.Client.nfs.v4.open_noat
5.88 +14.9% 6.76 nfsstat.Client.nfs.v4.open_noat.percent
0.02 -14.5% 0.02 nfsstat.Client.nfs.v4.pathconf.percent
0.01 -14.7% 0.01 nfsstat.Client.nfs.v4.reclaim_comp.percent
0.01 -14.7% 0.01 nfsstat.Client.nfs.v4.secinfo_no.percent
0.05 -14.6% 0.05 nfsstat.Client.nfs.v4.server_caps.percent
0.01 -14.7% 0.01 nfsstat.Client.nfs.v4.setattr.percent
0.01 -14.7% 0.01 nfsstat.Server.nfs.v4.null.percent
4809 +7.5% 5172 nfsstat.Server.nfs.v4.operations.access
0.66 ± 2% -12.6% 0.57 ± 3% nfsstat.Server.nfs.v4.operations.close.percent
0.20 -14.6% 0.17 nfsstat.Server.nfs.v4.operations.create.percent
0.00 -14.7% 0.00 nfsstat.Server.nfs.v4.operations.create_ses.percent
3656 +11.0% 4057 nfsstat.Server.nfs.v4.operations.delegreturn
3.54 +4.3% 3.69 nfsstat.Server.nfs.v4.operations.delegreturn.percent
0.00 -14.7% 0.00 nfsstat.Server.nfs.v4.operations.exchange_id.percent
11939 +5.6% 12607 nfsstat.Server.nfs.v4.operations.getattr
4.77 -10.5% 4.27 nfsstat.Server.nfs.v4.operations.getfh.percent
0.01 -14.7% 0.01 nfsstat.Server.nfs.v4.operations.lookup.percent
4708 +7.7% 5070 nfsstat.Server.nfs.v4.operations.open
0.00 -14.7% 0.00 nfsstat.Server.nfs.v4.operations.putrootfh.percent
0.00 -14.7% 0.00 nfsstat.Server.nfs.v4.operations.reclaim_comp.percent
0.00 -14.7% 0.00 nfsstat.Server.nfs.v4.operations.secinfononam.percent
1.00 +3.4e+05% 3381 nfsstat.Server.nfs.v4.operations.setattr
0.00 +1.8e+05% 3.09 nfsstat.Server.nfs.v4.operations.setattr.percent
6.87 -8.8% 6.27 nfsstat.Server.nfs.v4.operations.write.percent
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-02-13 2:04 UTC|newest]
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