If the problem happens "since two weeks", then something has changed in your data "since two weeks". So, if you can, get the backups for the last four weeks and do a binary search over the data to find two (possibly adjactent) datasets, one of which "works" and one which "doesn't work". Then analyze what is different between the two datasets.

In reply to Re: child process dies soon after fork() call by Corion
in thread child process dies soon after fork() call by haidut

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