From: Damien Wyart <damien.wyart@free.fr>
To: LKML <linux-kernel@vger.kernel.org>
Subject: Re: Strange load average and ksoftirqd behavior with 2.6.29-rc2-git1
Date: Tue, 27 Jan 2009 17:05:36 +0100 [thread overview]
Message-ID: <20090127160536.GA2241@localhost.localdomain> (raw)
In-Reply-To: <20090120162537.GA2344@localhost.localdomain>
Hello,
Just a heads up on this problem I sent a few days ago:
> Testing 2.6.29-rc2-git1, I notice something which doesn't happen with
> 2.6.28.1 on the same machine with the same config (minus new config
> entries for 2.6.29) : when the machine is idle, the load average
> reported by top is not 0.00 (it is with 2.6.28.1) but between 0.30 and
> 0.80 and either ksoftirqd/0 or ksoftirqd/1 is listed as number one in
> top output, with a few % of CPU. The machine seems to work fine but
> I think something is still wrong.
> Here is an example of top output :
> top - 17:23:40 up 19 min, 2 users, load average: 0.42, 0.48, 0.34
> Tasks: 99 total, 1 running, 98 sleeping, 0 stopped, 0 zombie
> Cpu(s): 0.2%us, 0.5%sy, 0.0%ni, 99.1%id, 0.0%wa, 0.0%hi, 0.2%si, 0.0%st
> Mem: 2075420k total, 311920k used, 1763500k free, 4912k buffers
> Swap: 1212896k total, 0k used, 1212896k free, 115648k cached
> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
> 4 root 15 -5 0 0 0 S 1 0.0 0:30.74 ksoftirqd/0
> 1 root 20 0 2100 692 588 S 0 0.0 0:00.47 init
> I attach dmesg, config and /proc/interrupts. Feel free to ask more info
> if needed.
The problem is still present in 2.6.29-rc2-git3 on this P4 machine, but
I do not see it on a Centrino laptop.
Config has not changed and I do not know if /proc/interrupts is useful
or not so I am not attaching anything for now, feel free to ask for more
information and I will do my best to provide it. I know someone else
also experienced this problem on his machines.
--
Damien Wyart
next prev parent reply other threads:[~2009-01-27 16:15 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-20 16:25 Strange load average and ksoftirqd behavior with 2.6.29-rc2-git1 Damien Wyart
2009-01-27 16:05 ` Damien Wyart [this message]
2009-01-27 17:53 ` Damien Wyart
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20090127160536.GA2241@localhost.localdomain \
--to=damien.wyart@free.fr \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.