[debian-mysql] Bug#679851: mysql-server-5.5: Mysqld using excessive cpu after clean install

[Nikolai Lusan]

Package: mysql-server-5.5
Version: 5.5.24+dfsg-4
Severity: important

Dear Maintainer,

After a recent upgrade of mysql-server I noticed that for an extended period
of time mysqld was using in excess of 100% of cpu on an dual core machine.
There were no connections to the database (I only use it for mythtv and all
those instances were shutdown for maintenance).

Following this I did a complete purge and re-install of all the mysql 
components - mysql-common
             mysql-client-5,5
				 mysql-server-core-5.5
				 mysql-server-5.5
This included ensuring that the datastore in /var/lib/mysql was deleted, as was
/etc/mysql

After this complete reinstall, with no other databases that the ones created by
the package install the behaviour continued.

I am considering a downgrade to 5.1 simply because this situation is untenable
for a service that recieves minimal use. This was not a problem I had with 5.1,
so I am confident that it has something to do with the 5.5 packages.

-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.2.2-kiev (SMP w/2 CPU cores)
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages mysql-server-5.5 depends on:
ii  adduser                3.113+nmu3
ii  debconf [debconf-2.0]  1.5.44
ii  initscripts            2.88dsf-28
ii  libc6                  2.13-34
ii  libdbi-perl            1.622-1
ii  libgcc1                1:4.7.1-2
ii  libstdc++6             4.7.1-2
ii  lsb-base               4.1+Debian7
ii  mysql-client-5.5       5.5.24+dfsg-4
ii  mysql-common           5.5.24+dfsg-4
ii  mysql-server-core-5.5  5.5.24+dfsg-4
ii  passwd                 1:4.1.5.1-1
ii  perl                   5.14.2-12
ii  psmisc                 22.19-1

Versions of packages mysql-server-5.5 recommends:
ii  bsd-mailx [mailx]      8.1.2-0.20111106cvs-1
ii  libhtml-template-perl  2.91-1

Versions of packages mysql-server-5.5 suggests:
pn  tinyca  <none>

-- debconf information excluded