I tried your code (on win32) and I see zero memory growth beyond the initial program load with either version, which is pretty much what I expected. The entire program (both loops) never used more that 1.5 MB of ram!

That suggests (perl build differences aside) that the problem lies with the platform rather than perl itself.

Given that you are writing to the file(s) line by line, it would appear as if you OS is caching the entire file in memory.

I know nowt about Solaris, but maybe there is a configuration option, that tells the OS to cache entire files, that can be turned off?

Examine what is said, not who speaks.
"Efficiency is intelligent laziness." -David Dunham
"Think for yourself!" - Abigail
"Memory, processor, disk in that order on the hardware side. Algorithm, algoritm, algorithm on the code side." - tachyon

In reply to Re: Managing System Memory Resources by BrowserUk
in thread Managing System Memory Resources by Sandy

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