linux-kernel - Re: 6.10/regression/bisected - after f1d97e769152 I spotted increased execution time of the kswapd0 process and symptoms as if there is not enough memory

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CABXGCsP_V-Dh97SkLbYZvHSUdfhgXY_-RSqdRwv16hz+r3B3FQ@mail.gmail.com>
Date: Wed, 10 Jul 2024 14:24:25 +0500
From: Mikhail Gavrilov <mikhail.v.gavrilov@...il.com>
To: Filipe Manana <fdmanana@...nel.org>
Cc: Andrea Gelmini <andrea.gelmini@...il.com>, 
	Linux List Kernel Mailing <linux-kernel@...r.kernel.org>, 
	Linux regressions mailing list <regressions@...ts.linux.dev>, Btrfs BTRFS <linux-btrfs@...r.kernel.org>, 
	dsterba@...e.com, josef@...icpanda.com
Subject: Re: 6.10/regression/bisected - after f1d97e769152 I spotted increased
 execution time of the kswapd0 process and symptoms as if there is not enough memory

On Mon, Jul 8, 2024 at 7:16 PM Filipe Manana <fdmanana@...nel.org> wrote:
>
> That's weird, I think you might be observing some variance.
> I noticed that too for your reports of the test2 branch and the old
> test3 branch, which were very identical, yet you got a very
> significant difference between them.
>
> Thanks.
>

up  1:00
root         269 10.2  0.0      0     0 ?        S    10:06   6:13 [kswapd0]
up  2:01
root         269  9.1  0.0      0     0 ?        S    10:06  11:07 [kswapd0]
up  3:00
root         269  8.4  0.0      0     0 ?        R    10:06  15:18 [kswapd0]
up  4:21
root         269 11.7  0.0      0     0 ?        S    10:06  30:33 [kswapd0]
up  5:01
root         269 11.7  0.0      0     0 ?        S    10:06  35:19 [kswapd0]
up  6:27
root         269 11.5  0.0      0     0 ?        S    10:06  44:39 [kswapd0]
up  7:00
root         269 11.2  0.0      0     0 ?        R    10:06  47:18 [kswapd0]

The measurement error can reach ±10 min.
Did you plan to merge the fix before the 6.10 release?

-- 
Best Regards,
Mike Gavrilov.