From: Dave Jones <davej@codemonkey.org.uk>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>,
Linux Kernel <linux-kernel@vger.kernel.org>,
Johannes Weiner <hannes@cmpxchg.org>
Subject: Re: 5.14-rc breaks iotop swap io monitoring.
Date: Tue, 24 Aug 2021 20:29:08 -0400 [thread overview]
Message-ID: <20210825002908.GA16064@codemonkey.org.uk> (raw)
In-Reply-To: <CAHk-=wg8XonsSN1SXjpSh3pO3-+EMZvdkb1xwJbLpZxCT2=thQ@mail.gmail.com>
On Tue, Aug 24, 2021 at 04:26:59PM -0700, Linus Torvalds wrote:
> > > What happens if you boot with the 'delayacct' kernel parameter.
> > >
> > Yeah that boot option does make iotop work again.
>
> Ok, so it's that delay allocation thing is it.
>
> I'm inclined to let it be and see if somebody else notices, and how
> big of a deal it is.
>
> The 'delayacct' kernel command line is an acceptable workaround if
> this is something only a few people will even notice or care about.
>
> I wonder how much people care about some statistics and iotop these days.
>
> I also assume the swap stats still show up in "vmstat" etc, and that
> it's just that iotop ended up using fancier interfaces?
afaict, vmstat is fine (though none of my machines are using swap, so
they're just reporting 0)
Dave
next prev parent reply other threads:[~2021-08-25 0:29 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-24 3:16 5.14-rc breaks iotop swap io monitoring Dave Jones
2021-08-24 3:18 ` Dave Jones
2021-08-24 8:31 ` Peter Zijlstra
2021-08-24 15:19 ` Dave Jones
2021-08-24 16:34 ` Linus Torvalds
2021-08-24 17:35 ` Peter Zijlstra
2021-08-24 21:33 ` Dave Jones
2021-08-24 23:26 ` Linus Torvalds
2021-08-25 0:29 ` Dave Jones [this message]
2021-08-25 7:36 ` Peter Zijlstra
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