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From "Joshua Bronson (JIRA)" <j...@apache.org>
Subject [jira] Updated: (COUCHDB-275) couch crashes erlang vm under heavy load
Date Thu, 05 Mar 2009 17:59:56 GMT

     [ https://issues.apache.org/jira/browse/COUCHDB-275?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Joshua Bronson updated COUCHDB-275:
-----------------------------------

    Attachment: 2009-03-05-couch.log.snippet

couch crashed again while under heavy load early this morning. attaching an excerpt of the
last 26 seconds of couch.log before the crash, 10:34:00 GMT to 10:34:26 GMT, in case it's
more convenient than the pastebin link, all it indicates is the amount of load we're putting
on couch -- 3422 requests in 26 seconds (~130req/sec) is typical load over the course of the
2.5 hours we update the database with people's news. The  15:10:43 GMT timestamp of the last
few lines of the excerpt reflects that couch was down for the 5 hours between when it crashed
and when I started it back up.

> couch crashes erlang vm under heavy load
> ----------------------------------------
>
>                 Key: COUCHDB-275
>                 URL: https://issues.apache.org/jira/browse/COUCHDB-275
>             Project: CouchDB
>          Issue Type: Bug
>    Affects Versions: 0.9
>         Environment: Linux melkjug.com 2.6.23-gentoo-r8 #1 SMP Wed Feb 13 14:28:49 EST
2008 x86_64 QEMU Virtual CPU version 0.9.1 GenuineIntel GNU/Linux
>            Reporter: Joshua Bronson
>         Attachments: 2009-03-05-couch.log.snippet
>
>
> I clicked "Compact" in futon for my 11G database at 9:04 AM EST:
> [Mon, 02 Mar 2009 14:04:32 GMT] [info] [<0.59.0>] Starting compaction for db "melkjug"
> An hour and a half later it was 85% finished and then the following was output to stderr:
> heart: Mon Mar  2 10:33:20 2009: heart-beat time-out.
> /usr/bin/couchdb: line 255: echo: write error: Broken pipe
> heart: Mon Mar  2 10:33:22 2009: Executed "/usr/bin/couchdb -k". Terminating.
> I am retaining my 4.3G melkjug.couch.compact file in case it's useful in debugging this.

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