We're working on a home-grown search engine daemon here and are having some trouble with signal handling (under 5.6.1, and 5.8.x). We have two processes: the actual search daemon and a watcher. The watcher will automatically restart the search engine under various circumstances, e.g. when the search database has had sufficiently significant changes made to it, or when the search engine dies/is killed.

The problem is that in our testing it appears that some of the signals are not getting through to our handlers. It looks like something -- the perl engine maybe? -- is trapping and ignoring some signals before our handlers have a chance at them. The problem appears to be timing-related. When two signals are generated close together in time (on the order of milliseconds) the first signal never makes it to our code, but the second one does.

Does this scenario ring a bell with anyone out there?

In reply to Perl dropping signals? by DrWhy

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