Entries tagged performance

Related tags: apache2, bytemark, debian-administration, nginx.

Look are you gonna step outside or do I have to drag you?

Sunday, 25 October 2009

Over the past couple of months the machine which hosts the Debian Administration website has been struggling with two distinct problems:

The dreaded scheduler bug/issue

The machine would frequently hang with the messages of the form:

Task xxx blocked for more than 120 seconds

This would usually require the application of raised elephants to recover from.

OOM-issues

The system would exhaust the generous 2Gb of memory it possessed, and start killing random tasks until the memory usage fell - at which point the server itself stopped functioning in a useful manner.

Hopefully these problems are now over:

The combination of these two changes should resolve the memory issues, and I've installed a home-made 2.6.31.4 kernel which appears to have corrected the task-blocking scheduler issue.

ObTitle: Bridget Jones: The Edge of Reason

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