From: Richard Henderson <rth@twiddle.net>
To: "Emilio G. Cota" <cota@braap.org>
Cc: qemu-devel@nongnu.org, alex.bennee@linaro.org
Subject: Re: [Qemu-devel] [PATCH v6 26/35] tests: add atomic_add-bench
Date: Sun, 16 Oct 2016 18:49:17 -0700 [thread overview]
Message-ID: <16d62650-7c85-3e05-9792-b7a2982d536e@twiddle.net> (raw)
In-Reply-To: <20161014211936.GA23123@flamenco>
On 10/14/2016 02:19 PM, Emilio G. Cota wrote:
> On Tue, Oct 11, 2016 at 14:40:52 -0500, Richard Henderson wrote:
>> > From: "Emilio G. Cota" <cota@braap.org>
>> >
>> > With this microbenchmark we can measure the overhead of emulating atomic
>> > instructions with a configurable degree of contention.
>> >
>> > The benchmark spawns $n threads, each performing $o atomic ops (additions)
>> > in a loop. Each atomic operation is performed on a different cache line
>> > (assuming lines are 64b long) that is randomly selected from a range [0, $r).
>> >
>> > [ Note: each $foo corresponds to a -foo flag ]
>> >
>> > Signed-off-by: Emilio G. Cota <cota@braap.org>
>> > Signed-off-by: Richard Henderson <rth@twiddle.net>
>> > Message-Id: <1467054136-10430-20-git-send-email-cota@braap.org>
> Can you please fix up this patch with the below? It does the
> same as we're doing in qht-bench:
> http://lists.nongnu.org/archive/html/qemu-devel/2016-10/msg03034.html
Done.
r~
next prev parent reply other threads:[~2016-10-17 1:49 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-11 19:40 [Qemu-devel] [PATCH v6 00/35] cmpxchg-based emulation of atomics Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 01/35] atomics: add atomic_xor Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 02/35] atomics: add atomic_op_fetch variants Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 03/35] exec: Avoid direct references to Int128 parts Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 04/35] int128: Use __int128 if available Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 05/35] int128: Add int128_make128 Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 07/35] linux-user: enable parallel code generation on clone Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 08/35] cputlb: Replace SHIFT with DATA_SIZE Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 09/35] cputlb: Move probe_write out of softmmu_template.h Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 10/35] cputlb: Remove includes from softmmu_template.h Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 11/35] cputlb: Move most of iotlb code out of line Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 12/35] cputlb: Tidy some macros Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 13/35] tcg: Add atomic helpers Richard Henderson
2016-10-12 16:16 ` Alex Bennée
2016-10-16 22:17 ` Emilio G. Cota
2016-10-17 1:09 ` Richard Henderson
2016-10-17 1:40 ` Richard Henderson
2016-10-17 3:23 ` Emilio G. Cota
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 14/35] tcg: Add atomic128 helpers Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 15/35] tcg: Add CONFIG_ATOMIC64 Richard Henderson
2016-10-12 16:16 ` Alex Bennée
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 16/35] tcg: Emit barriers with parallel_cpus Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 17/35] target-i386: emulate LOCK'ed cmpxchg using cmpxchg helpers Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 18/35] target-i386: emulate LOCK'ed OP instructions using atomic helpers Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 19/35] target-i386: emulate LOCK'ed INC using atomic helper Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 20/35] target-i386: emulate LOCK'ed NOT " Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 21/35] target-i386: emulate LOCK'ed NEG using cmpxchg helper Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 22/35] target-i386: emulate LOCK'ed XADD using atomic helper Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 23/35] target-i386: emulate LOCK'ed BTX ops using atomic helpers Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 24/35] target-i386: emulate XCHG using atomic helper Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 25/35] target-i386: remove helper_lock() Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 26/35] tests: add atomic_add-bench Richard Henderson
2016-10-14 21:19 ` Emilio G. Cota
2016-10-17 1:49 ` Richard Henderson [this message]
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 27/35] target-arm: Rearrange aa32 load and store functions Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 28/35] target-arm: emulate LL/SC using cmpxchg helpers Richard Henderson
2016-10-13 11:43 ` Alex Bennée
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 29/35] target-arm: emulate SWP with atomic_xchg helper Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 30/35] target-arm: emulate aarch64's LL/SC using cmpxchg helpers Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 31/35] linux-user: remove handling of ARM's EXCP_STREX Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 32/35] linux-user: remove handling of aarch64's EXCP_STREX Richard Henderson
2016-10-11 19:40 ` [Qemu-devel] [PATCH v6 33/35] target-arm: remove EXCP_STREX + cpu_exclusive_{test, info} Richard Henderson
2016-10-11 19:41 ` [Qemu-devel] [PATCH v6 34/35] target-alpha: Introduce MMU_PHYS_IDX Richard Henderson
2016-10-11 19:41 ` [Qemu-devel] [PATCH v6 35/35] target-alpha: Emulate LL/SC using cmpxchg helpers Richard Henderson
2016-10-16 22:38 ` [Qemu-devel] [PATCH v6 00/35] cmpxchg-based emulation of atomics Emilio G. Cota
2016-10-17 8:17 ` Alex Bennée
2016-10-17 14:37 ` Richard Henderson
2016-10-17 15:33 ` Alex Bennée
2016-10-17 17:56 ` Emilio G. Cota
2016-10-18 8:28 ` Alex Bennée
2016-10-18 18:01 ` Emilio G. Cota
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