The file is not read from disk for each request, but it is read from disk on startup, even if "startup" only happens once a month. The OP said he was wondering if it could have "any performance impact" (emphasis mine). Startup performance is a subset of performance.

More significantly, time to read the file from disk was simply the first thing that came to mind as something which could be affected by module size. At no time have I said (or intended to imply) that it was the only thing which could be affected. It was meant as an example of a difference, not an exhaustive list of all possible differences.

Even if my example is wrong (which it may or may not be, depending on how broadly you consider "performance"), my point is unaffected: If micro-optimization actually matters for your application, then you're probably better off porting to C rather than worrying about how to squeeze an extra microsecond out of your Perl code.

In reply to Re^5: Does module size matter under mod_perl? by dsheroh
in thread Does module size matter under mod_perl? by Anonymous Monk

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