From: Konstantin Khorenko <khorenko@virtuozzo.com>
To: Andrey Zhadchenko <andrey.zhadchenko@virtuozzo.com>
Cc: devel@openvz.org
Subject: Re: [Devel] [PATCH hci-8.1 6/7] drivers/md/dm-qcow2: declare DM_TARGET_NOWAIT
Date: Wed, 04 Nov 2026 22:35:09 +0100 [thread overview]
Message-ID: <179382810904.2794215.7774511998952725510.b4-review@b4> (raw)
In-Reply-To: <20261029140346.465768-7-andrey.zhadchenko@virtuozzo.com>
I won't apply this version, please send v2 with the changes below.
On Thu, 29 Oct 2026 17:03:45 +0300, Andrey Zhadchenko wrote:
> before after
> qd=64 nj=4 IOPS 1034K (11% idle) 892K (30% idle)
> qd=1 nj=1 lat 8us 6us
Item 5 of the cover letter reply: drop the table and the "~24% of all
cpus" from the message and post them in this thread. Say instead what
gets faster: io_uring no longer punts every request to io-wq.
Why: the numbers hold only on the box and the job they were measured
with, a later reader of the commit cannot act on them.
The code is correct. Alexander's request to put this patch after the
batching one still needs an answer (item 7).
--
Konstantin Khorenko,
Virtuozzo Linux Kernel Team
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next prev parent reply other threads:[~2026-11-04 21:36 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-29 14:03 [Devel] [PATCH 0/7] drivers/md/dm-qcow2: per-qio fast path Andrey Zhadchenko
2026-10-29 14:03 ` [Devel] [PATCH hci-8.1 1/7] drivers/md/dm-qcow2: repeat md page lookup if it was inserted in parallel Andrey Zhadchenko
2026-10-29 14:13 ` no-reply
2026-11-04 21:35 ` Konstantin Khorenko
2026-10-29 14:03 ` [Devel] [PATCH hci-8.1 2/7] drivers/md/dm-qcow2: check MD_DIRTY and md->wbd under lock in perform_rw_mapped() Andrey Zhadchenko
2026-10-29 14:13 ` no-reply
2026-11-04 21:35 ` Konstantin Khorenko
2026-10-29 14:03 ` [Devel] [PATCH hci-8.1 3/7] drivers/md/dm-qcow2: prepare process_one_qio() for fastpath Andrey Zhadchenko
2026-10-29 14:16 ` no-reply
2026-11-02 17:28 ` Alexander Ivanov
2026-11-04 21:35 ` Konstantin Khorenko
2026-10-29 14:03 ` [Devel] [PATCH hci-8.1 4/7] drivers/md/dm-qcow2: add per-qio work infrastructure Andrey Zhadchenko
2026-10-29 14:18 ` no-reply
2026-11-04 21:35 ` Konstantin Khorenko
2026-10-29 14:03 ` [Devel] [PATCH hci-8.1 5/7] drivers/md/dm-qcow2: implement per-qio fast processing Andrey Zhadchenko
2026-10-29 14:22 ` no-reply
2026-11-04 21:35 ` Konstantin Khorenko
2026-10-29 14:03 ` [Devel] [PATCH hci-8.1 6/7] drivers/md/dm-qcow2: declare DM_TARGET_NOWAIT Andrey Zhadchenko
2026-10-29 14:19 ` no-reply
2026-11-03 8:33 ` Alexander Ivanov
2026-11-04 21:35 ` Konstantin Khorenko [this message]
2026-10-29 14:03 ` [Devel] [PATCH hci-8.1 7/7] drivers/md/dm-qcow2: process fast path qios in per-cpu batches on a workqueue Andrey Zhadchenko
2026-10-29 14:22 ` no-reply
2026-11-02 10:49 ` Andrey Zhadchenko
2026-11-04 21:35 ` Konstantin Khorenko
2026-11-03 9:36 ` [Devel] [PATCH 0/7] drivers/md/dm-qcow2: per-qio fast path Alexander Ivanov
2026-11-04 21:35 ` Konstantin Khorenko
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