From: Pavel Machek <pavel@ucw.cz>
To: kernel list <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@osdl.org>
Cc: mhocko@suse.cz, vbabka@suse.cz
Subject: 5.7-rc0: kswapd eats cpu during a disk test?!
Date: Sun, 31 May 2020 12:34:31 +0200 [thread overview]
Message-ID: <20200531103431.GA28429@amd> (raw)
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Hi!
This is simple cat /dev/sda > /dev/zero... on thinkpad x60 (x86-32),
with spinning rust.
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1000 root 20 0 0 0 0 R 53.3 0.0 57:34.93 kswapd0
27897 root 20 0 6976 580 536 R 44.5 0.0 1:44.53 cat
It keeps both CPUs busy... and I don't think that's right.
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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next reply other threads:[~2020-05-31 10:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-31 10:34 Pavel Machek [this message]
2020-06-01 8:55 ` 5.7-rc0: kswapd eats cpu during a disk test?! Vlastimil Babka
2020-06-12 22:45 ` Pavel Machek
2020-06-12 23:05 ` Pavel Machek
2020-06-13 4:47 ` Hillf Danton
2020-06-13 6:48 ` Pavel Machek
2020-06-13 9:43 ` Hillf Danton
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