[Numpy-discussion] Temporary error accessing NumPy tickets

Pauli Virtanen pav at iki.fi
Fri Aug 31 12:35:50 EDT 2012

Ondřej Čertík <ondrej.certik <at> gmail.com> writes:
> When I access tickets, for example:
> http://projects.scipy.org/numpy/ticket/2185
> then sometimes I get:
> Trac detected an internal error:
> OperationalError: database is locked
> For example yesterday. A refresh in about a minute fixed the problem.
> Today it still lasts at the moment.

The failures are probably partly triggered by the machine running out of memory.
It runs services on mod_python, which apparently slowly leaks. Someone (who?)
with root access on the machine needs to restart Apache. (Note: "apachectl
graceful" is not enough to correct this, it needs a real restart of the process.)

Longer term solution is to move out of mod_python (mod_wsgi likely, going to CGI
will create other performance problems), or to transition the stuff there to a
more beefy server.

Pauli Virtanen

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