From: Dipankar Sarma <dipankar@in.ibm.com>
To: "Henrik Størner" <henrik@hswn.dk>
Cc: Maneesh Soni <maneesh@in.ibm.com>, linux-mm@kvack.org, akpm@digeo.com
Subject: Re: 2.5.42-mm2 hangs system
Date: Thu, 17 Oct 2002 01:01:03 +0530 [thread overview]
Message-ID: <20021017010103.C2380@in.ibm.com> (raw)
In-Reply-To: <20021016185908.GA863@hswn.dk>; from henrik@hswn.dk on Wed, Oct 16, 2002 at 08:59:08PM +0200
On Wed, Oct 16, 2002 at 08:59:08PM +0200, Henrik Storner wrote:
> well you hit the nail right on the head there.
>
> I've just been running the 2.5.42-mm2 kernel except for the dcache_rcu
> patch for a full hour, and I was unable to reproduce the hangs that I
> saw with the full -mm2 patch installed. Did two full kernel builds
> while reading some mail and doing other stuff - no problems what so
> ever.
>
> Just to be sure, I re-applied the dcache_rcu patch, rebuilt the
> kernel, booted with the kernel containing dcache_rcu patch,
> and the system died within a few minutes.
>
> So it is definitely something in the dcache_rcu patch that does it.
Well, I am not quite sure of this yet. Maneesh pointed out this earlier -
In this machine with 2.5.42-mm2 and no dcache_rcu, (with your .config),
we see this -
[root@llm04 dbench]# df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/sda6 1004024 461168 491852 49% /
/dev/sda1 505605 38348 441153 8% /boot
/dev/sda5 2514172 1791560 594900 76% /usr
none 257532 0 257532 0% /dev/shm
/dev/sdb5 6324896 23996 5979604 1% /mnt/sdb5
llm04:/mnt/sdb5 6324896 23968 5979616 1% /mnt/sdc1
/dev/sda2 9068648 3993040 4614948 47% /home
[root@llm04 dbench]# pwd
/mnt/sdc1/dbench
root@llm04 dbench]# ./dbench 4
4 clients started
..........................................................................................................................................rmdir CLIENTS/CLIENT2/~DMTMP/WORDPRO failed (Directory not empty)
rmdir CLIENTS/CLIENT2/~DMTMP/PARADOX failed (Directory not empty)
rmdir CLIENTS/CLIENT2/~DMTMP failed (Directory not empty)
+.......rmdir CLIENTS/CLIENT0/~DMTMP/WORDPRO failed (Directory not empty)
rmdir CLIENTS/CLIENT0/~DMTMP/PARADOX failed (Directory not empty)
.rmdir CLIENTS/CLIENT0/~DMTMP failed (Directory not empty)
+.rmdir CLIENTS/CLIENT3/~DMTMP/WORDPRO failed (Directory not empty)
rmdir CLIENTS/CLIENT3/~DMTMP/PARADOX failed (Directory not empty)
rmdir CLIENTS/CLIENT3/~DMTMP failed (Directory not empty)
+.rmdir CLIENTS/CLIENT1/~DMTMP/WORDPRO failed (Directory not empty)
rmdir CLIENTS/CLIENT1/~DMTMP/PARADOX failed (Directory not empty)
rmdir CLIENTS/CLIENT1/~DMTMP failed (Directory not empty)
+****
Throughput 36.6733 MB/sec (NB=45.8417 MB/sec 366.733 MBit/sec)
This needs more investigation. I would be really supprised if dcache_rcu
has any effect on UP code.
Thanks
--
Dipankar Sarma <dipankar@in.ibm.com> http://lse.sourceforge.net
Linux Technology Center, IBM Software Lab, Bangalore, India.
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/
next prev parent reply other threads:[~2002-10-16 19:31 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-10-13 16:04 Henrik Størner
2002-10-13 21:03 ` William Lee Irwin III
[not found] ` <3DA9CA28.155BA5CB@digeo.com>
2002-10-13 22:33 ` Henrik Størner
2002-10-13 22:57 ` Andrew Morton
2002-10-14 12:25 ` 2.5.42-mm2 on small systems Ed Tomlinson
2002-10-14 14:34 ` Martin J. Bligh
2002-10-14 21:24 ` Bill Davidsen
2002-10-15 6:42 ` Andrew Morton
2002-10-16 20:55 ` Bill Davidsen
2002-10-16 22:43 ` Ed Tomlinson
2002-10-16 13:09 ` 2.5.42-mm2 hangs system Maneesh Soni
2002-10-16 15:49 ` Henrik Størner
2002-10-16 18:59 ` Henrik Størner
2002-10-16 19:31 ` Dipankar Sarma [this message]
2002-10-16 19:43 ` Andrew Morton
2002-10-16 20:05 ` Dipankar Sarma
2002-10-30 9:48 ` [FIX] " Maneesh Soni
2002-10-31 7:54 ` Henrik Størner
2002-10-17 14:38 ` Maneesh Soni
2002-10-17 16:14 ` 2.5.43-mm2 gets network connection stuck Sebastian Benoit
2002-10-17 17:22 ` Andrew Morton
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=20021017010103.C2380@in.ibm.com \
--to=dipankar@in.ibm.com \
--cc=akpm@digeo.com \
--cc=henrik@hswn.dk \
--cc=linux-mm@kvack.org \
--cc=maneesh@in.ibm.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox