Does Apache spawn piped logger on each HTTP request?

Posted by Xepoch on Server Fault See other posts from Server Fault or by Xepoch
Published on 2010-04-29T16:31:26Z Indexed on 2010/04/29 16:37 UTC
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Filed under:

apache

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pipe

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prefork

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tune

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cronolog

I am examining a high-volume Apache prefork site and noticing that many log entries such as:

CustomLog '|/foo/bar/cronolog -foo -bar'
RewriteLog '|/foo/bar/cronolog -bar -foo'

When apache logs the request or the rewrite is cronolog spawned for EACH request or is the pipe opened and written-to for the lifetime duration of the preforked apache process?

(This was asked on stackoverflow but I'll remove from there as more applicable here I think.)

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