From: Breno Leitao <leitao@debian.org>
To: Alexander Viro <viro@zeniv.linux.org.uk>,
Christian Brauner <brauner@kernel.org>, Jan Kara <jack@suse.cz>,
Shuah Khan <shuah@kernel.org>, Mateusz Guzik <mjguzik@gmail.com>
Cc: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-kselftest@vger.kernel.org, shakeel.butt@linux.dev,
jlayton@kernel.org, oleg@redhat.com, axboe@kernel.dk,
kernel-team@meta.com
Subject: Re: [PATCH v3 0/2] fs/pipe: reduce pipe->mutex contention by pre-allocating outside the lock
Date: Thu, 9 Jul 2026 02:37:44 -0700 [thread overview]
Message-ID: <ak9re6AYFpQLz59L@gmail.com> (raw)
In-Reply-To: <20260524-fix_pipe-v3-0-bb4a75d23a90@debian.org>
On Sun, May 24, 2026 at 07:44:57AM -0700, Breno Leitao wrote:
> Throughput improves +6% to +28% and average write latency drops 5%
> to 22% across every configuration.
FWIW: Kernel Test Robot detected similar and slightly better numbers
with this patch, and reported 29.1% improvement on lmbench3
%stddev %change %stddev
\ | \
37316 +29.1% 48191 ± 2% lmbench3.PIPE.bandwidth.MB/sec
5690 ± 9% +153.5% 14426 ± 18% lmbench3.time.involuntary_context_switches
https://lore.kernel.org/all/202607091015.c3936260-lkp@intel.com/
prev parent reply other threads:[~2026-07-09 9:37 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-24 14:44 [PATCH v3 0/2] fs/pipe: reduce pipe->mutex contention by pre-allocating outside the lock Breno Leitao
2026-05-24 14:44 ` [PATCH v3 1/2] fs/pipe: pre-allocate pages outside pipe->mutex in anon_pipe_write Breno Leitao
2026-05-24 14:44 ` [PATCH v3 2/2] selftests/pipe: add pipe_bench microbenchmark Breno Leitao
2026-05-28 12:34 ` [PATCH v3 0/2] fs/pipe: reduce pipe->mutex contention by pre-allocating outside the lock Christian Brauner
2026-06-16 20:47 ` Josh Triplett
2026-06-17 8:52 ` Oleg Nesterov
2026-06-17 10:23 ` Breno Leitao
2026-06-17 11:59 ` Mateusz Guzik
2026-06-17 14:37 ` Oleg Nesterov
2026-06-17 14:47 ` Breno Leitao
2026-06-17 14:57 ` Mateusz Guzik
2026-06-17 15:26 ` Breno Leitao
2026-06-17 15:45 ` Oleg Nesterov
2026-06-17 14:51 ` Mateusz Guzik
2026-06-17 15:30 ` Oleg Nesterov
2026-06-17 16:04 ` Oleg Nesterov
2026-06-17 15:01 ` Mateusz Guzik
2026-06-17 17:39 ` Breno Leitao
2026-07-09 9:37 ` Breno Leitao [this message]
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