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[Piotr Gackiewicz <gacek@xxxxxxxxxxxx>]

I have observed similar behaviour when "userstat patch" is on.
MySQL 5.0.77 + percona patches, compiled on my own.
We run hosting with 600 databases, 28k tables, most of them are of MyISAM type (1k of InnoDB type).

It was strange: mysql patched with userstat patch worked well for three
weeks, and then suddenly memory consumption started to grow
exponentially.

After mysqld restart - still exponential memory consumption.
At peak, it was consuming additional 20 MB every 20 seconds.

Had to switch userstat_running off, something is broken there.

-- 
Possible memory leak in the MySQL Binaries Percona build10
https://bugs.launchpad.net/bugs/315619
You received this bug notification because you are a member of Percona
developers, which is the registrant for Percona patches.

Status in Patches for MySQL by Percona: Incomplete

Bug description:
Hello, we have been using the 67-b10 version since around release, and we see a memory usage development that would indicate a memory leak?

Server version: 5.0.67-percona-highperf-b10-log MySQL Percona High Performance Edition (GPL)

http://nicholas.users.linpro.no/mysql-memory-month.png

Week 50 we ran stock redhat mysql . Early week 51 we installed the percona version. since then memory usage has been growing. Last week orso it ran out of swap space, so we added some more today ;)

We also run http://www.percona.com/mysql/5.0.68/RPM/rhel5/ another place, without the same problems.

greetings
-nicholas