From: Nikos Chantziaras <realnc@arcor.de>
To: Ulrich Lukas <stellplatz-nr.13a@datenparkplatz.de>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Arjan van de Ven <arjan@infradead.org>
Subject: Re: Poor desktop responsiveness with background I/O-operations
Date: Sun, 20 Sep 2009 20:17:36 +0300 [thread overview]
Message-ID: <4AB663B0.9070600@arcor.de> (raw)
In-Reply-To: <4AB5ECD0.7010903@datenparkplatz.de>
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On 09/20/2009 11:50 AM, Ulrich Lukas wrote:
> Arjan van de Ven wrote:
>> can you try the following two things?
>>
>> echo 4096> /sys/block/sda/queue/nr_requests
>> for i in `pidof kjournald` ; do ionice -c1 -p $i ; done
>
> I tried this just now, but it doesn't change things much. I can do a
> more testing later today.
>
>
>> I assume you're using CFQ.
>
> Yes, it's CFQ. (see .config of my previous posting)
>
> Filesystem is EXT4.
I can also confirm total lock-up when copying a big file (Intel Core 2
Duo, Intel X38 chipset). Everything locks-up for several seconds during
the copying. I'm also on ext4. I've been told on various mailing lists
that this is normal, expected and unavoidable so I pretty much think the
only solution is to avoid heavy I/O :P
next prev parent reply other threads:[~2009-09-20 17:17 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-20 3:08 Poor desktop responsiveness with background I/O-operations Ulrich Lukas
2009-09-20 4:11 ` Thomas Fjellstrom
2009-09-20 6:07 ` Arjan van de Ven
2009-09-20 8:50 ` Ulrich Lukas
2009-09-20 17:17 ` Nikos Chantziaras [this message]
2009-09-20 19:38 ` Mike Galbraith
2009-09-21 0:22 ` Justin P. Mattock
2009-09-21 4:23 ` Mike Galbraith
2009-09-21 7:48 ` Ulrich Lukas
2009-09-21 8:06 ` Mike Galbraith
2009-09-21 19:47 ` James Cloos
2009-09-21 22:47 ` Nikos Chantziaras
2009-09-21 23:34 ` James Cloos
2009-09-22 7:06 ` Mike Galbraith
2009-09-22 9:20 ` Mike Galbraith
2009-09-22 11:22 ` Henrique de Moraes Holschuh
2009-09-22 11:32 ` Mike Galbraith
2009-09-22 16:58 ` James Cloos
2009-09-20 17:04 ` Ulrich Lukas
2009-09-20 20:22 ` Jiri Kosina
2009-09-20 22:04 ` Jan Kara
2009-09-21 7:25 ` Mike Galbraith
2009-09-21 7:33 ` Arjan van de Ven
2009-09-21 7:41 ` Mike Galbraith
2009-09-21 7:47 ` Mike Galbraith
2009-09-21 2:59 ` Ulrich Lukas
[not found] <dmlhK-6ws-5@gated-at.bofh.it>
[not found] ` <dmnMy-8tg-7@gated-at.bofh.it>
2009-09-20 18:51 ` Sanjoy Mahajan
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