From: Roger Larsson <roger.larsson@norran.net>
To: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
Rik van Riel <riel@conectiva.com.br>
Subject: 2.4.0-t9p7 and mmap002 - freeze
Date: Wed, 27 Sep 2000 23:21:20 +0200 [thread overview]
Message-ID: <39D264D0.77B3142@norran.net> (raw)
Hi,
Tried latest patch with the same result - freeze...
No extra patches added.
running from console as root
mmap002 from memtest-0.0.3
with RAMSIZE defined as 90 MB (I have 96MB)
after a while with heavy disk access (thrashing?) the drive
becomes silent - no more progress...
[if you can not repeat this - try with less memory 32 MB...]
Magic works!
Magic memory
Constantly LOW on inactive_clean (0 is the most common)
lots of shared memory (almost equals active)
[can be normal condition since mmap002 produces dirty
mmaped pages]
Magic process:
Manual samples gave the following locations.
(NOTE: not a call trace)
We are trying to clean pages, but do we make any
progress since disk is silent?
Trace; c0127d85 <page_launder+3d/724>
Trace; c0126dad <deactivate_page_nolock+13d/248>
Trace; c0127e00 <page_launder+b8/724>
Trace; c0128035 <page_launder+2ed/724>
Trace; c0127dcc <page_launder+84/724>
Trace; c0127dd0 <page_launder+88/724>
Trace; c0127e00 <page_launder+b8/724>
Trace; c012fd38 <try_to_free_buffers+4/138>
Magic Sigterm (Alt+SysRq+E)
Gives you a running system again.
Notes:
Probably timing critical for entry into this state
since adding a few printk:s makes it happen less often.
I have even got complete mmap002 runs succeed - but
disk is running too much and for too long time...
a lot more than 10 min - normal run on previous testX
did usually take less than 3 minutes.
/RogerL
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next reply other threads:[~2000-09-27 21:21 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-09-27 21:21 Roger Larsson [this message]
2000-09-28 6:31 ` Mike Galbraith
2000-09-28 10:12 ` Rik van Riel
2000-09-28 15:12 ` Mike Galbraith
2000-09-29 14:54 ` Rik van Riel
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