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SEGV on beta4

From: Bill Moseley <moseley(at)not-real.hank.org>
Date: Thu Aug 24 2000 - 14:40:17 GMT
After installing swish-e beta4 on a production machine I've been seeing
rare SEGVs.  This was not happening on 1.3x.

They are rare indeed -- swish is being called about 10,000 times a day.
Below are the times of the segfaults.  Notice how they often happen a few
in a row.  This would make me think it's a resource issue with the machine.

SunOS sunsite 5.6 Generic_105181-17 sun4u sparc SUNW,Ultra-Enterprise
2G RAM.

I know the queries that were sent to swish, and retrying those queries
works as expected, so it's not the input to swish causing the segv.

So, how does one track down errors like this when they happen so rarely?
Can I get swish-e to dump core and do some type of backtrace?  How do I
specify the core file, and does it matter if the owner is the webserver
process?


$?=11   Tue Aug  1 16:05:25 2000
$?=11   Tue Aug  1 16:05:28 2000
$?=11   Tue Aug  1 16:05:31 2000
$?=11   Tue Aug  1 16:05:33 2000
$?=11   Tue Aug  1 20:03:04 2000
$?=11   Tue Aug  1 20:03:10 2000
$?=11   Tue Aug  1 20:03:18 2000
$?=11   Tue Aug  1 20:03:20 2000
$?=11   Wed Aug  2 10:05:18 2000
$?=11   Sat Aug  5 08:37:13 2000
$?=11   Sat Aug  5 08:37:17 2000
$?=11   Sat Aug  5 09:48:23 2000
$?=11   Sat Aug  5 09:48:28 2000
$?=11   Sat Aug  5 11:16:59 2000
$?=11   Sat Aug  5 11:17:04 2000
$?=11   Sat Aug  5 11:17:08 2000
$?=11   Sat Aug  5 14:48:55 2000
$?=11   Sat Aug  5 14:48:58 2000
$?=11   Sat Aug  5 14:49:06 2000
$?=11   Sat Aug  5 14:49:06 2000
$?=11   Sat Aug  5 14:49:07 2000
$?=11   Wed Aug  9 10:29:15 2000
$?=11   Wed Aug  9 10:29:16 2000
$?=11   Fri Aug 11 14:57:12 2000
$?=11   Fri Aug 11 14:57:14 2000
$?=11   Fri Aug 11 15:56:33 2000
$?=11   Fri Aug 11 19:39:32 2000
$?=11   Sat Aug 12 11:44:58 2000
$?=11   Sat Aug 12 11:45:04 2000
$?=11   Sat Aug 12 11:45:05 2000
$?=11   Sat Aug 12 11:45:06 2000
$?=11   Sat Aug 12 14:17:08 2000
$?=11   Sat Aug 12 14:17:10 2000
$?=11   Sat Aug 12 14:17:11 2000
$?=11   Sat Aug 12 14:17:13 2000
$?=11   Sat Aug 12 14:17:15 2000
$?=11   Sat Aug 12 14:17:17 2000
$?=11   Sat Aug 12 14:17:18 2000
$?=11   Sat Aug 12 14:17:20 2000
$?=11   Sat Aug 12 14:17:21 2000
$?=11   Sat Aug 12 14:17:22 2000
$?=11   Sat Aug 12 14:17:24 2000
$?=11   Sat Aug 12 14:17:28 2000
$?=11   Sat Aug 12 14:17:28 2000
$?=11   Sat Aug 12 14:17:31 2000
$?=11   Sat Aug 12 14:17:36 2000
$?=11   Sat Aug 12 17:20:42 2000
$?=11   Sat Aug 12 17:20:48 2000
$?=11   Sat Aug 12 17:20:51 2000
$?=11   Sat Aug 12 17:20:51 2000
$?=11   Sun Aug 13 07:20:15 2000
$?=11   Sun Aug 13 12:57:33 2000
$?=11   Sun Aug 13 13:06:42 2000
$?=11   Tue Aug 15 12:06:36 2000
$?=11   Tue Aug 15 17:42:47 2000
$?=11   Tue Aug 15 17:42:47 2000
$?=11   Tue Aug 15 17:58:20 2000
$?=11   Tue Aug 15 17:58:29 2000
$?=11   Wed Aug 16 10:43:38 2000
$?=11   Wed Aug 16 10:43:38 2000
$?=11   Sat Aug 19 09:51:26 2000
$?=11   Sat Aug 19 13:31:44 2000
$?=11   Sat Aug 19 13:31:46 2000
$?=11   Sat Aug 19 13:31:48 2000
$?=11   Sun Aug 20 18:44:49 2000
$?=11   Wed Aug 23 13:54:19 2000
$?=11   Wed Aug 23 13:54:21 2000
$?=11   Wed Aug 23 13:54:22 2000
$?=11   Wed Aug 23 13:54:27 2000
$?=11   Wed Aug 23 16:54:42 2000
$?=11   Wed Aug 23 16:54:51 2000
$?=11   Wed Aug 23 16:54:52 2000

Bill Moseley
mailto:moseley@hank.org
Received on Thu Aug 24 14:44:26 2000