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If this is ActiveState Perl built with VC6, I remember some bad (re)allocation behaviour of the runtime memory allocator. Maybe the decompressor reallocates the buffer quite often and triggers the bad behaviour.

A potential workaround could be to presize the buffer:

$cleartxt= " " x 100_000; # or whatever you expect; $cleartxt= ''; gunzip ...

Super Search for a post by BrowserUk somewhere in such a thread could unearth more information.


In reply to Re: IO::Uncompress::Gunzip to scalar takes hours (on windows) by Corion
in thread IO::Uncompress::Gunzip to scalar takes hours (on windows) by cmv

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