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IDProjectCategoryView StatusLast Update
0000140Pgpool-IIBugpublic2015-08-04 09:52
ReportermparentAssigned ToMuhammad Usama 
Status assignedResolutionopen 
PlatformLinuxOSDebianOS VersionWheezy (7.8)
Product Version 
Target VersionFixed in Version 
Summary0000140: Child process memory grows without bound in v3.3.4
DescriptionWhen running pgpool-2 with 1 master and 2 slaves (on separate servers) the worker process memory grows without bound. (Once memory is exhausted PGPOOL starts killing off worker processes).

Restarting the PGPOOL process causes all 32 child workers to use ~8MB memory each, and it slowly grows by about 10MB per day (currently 69-74 MB each).

Is this a known issue? I've looked through the v3.3.4+ changelogs and this issue tracker and did not see anything related.

Our pgpool config is attached. Our config is only lightly modified from the default, and has "memory_cache_enabled = off", but maybe there's some other incorrect settings?

Alternatively, what particularly "child lifetime/max_connections" configuration settings would you recommend as a workaround?
Additional InformationOver the course of troubleshooting we've restarted both PGPOOL and the server itself several times, and this memory issue always occurs.

TagsNo tags attached.



2015-08-01 01:39


pgpool.conf (31,233 bytes)

Issue History

Date Modified Username Field Change
2015-08-01 01:39 mparent New Issue
2015-08-01 01:39 mparent File Added: pgpool.conf
2015-08-04 09:52 t-ishii Assigned To => Muhammad Usama
2015-08-04 09:52 t-ishii Status new => assigned