I watch the %MEM columns in top/ps. It's been confusing testing, because when there is a small percent difference between the peak and normal mem usage, sometimes the kernel shows %MEM drop, other times not. If the diff is big, the kernel immediately returns it.

My real question is what are people talking about when they claim their threaded apps are increasing in memory. Do I just say "forget it.... the kernel will grab it if needed", or "you have a thread design problem"

I'm also wondering if this has different behavior with the older 5.8 threads vs. the latest threads (which seem to run better), and/or kernel versions.

It seemed like just last week that this was a constant problem with Perl threads, and now suddenly it seems like a great thing, where you can reclaim memory from mem-intensive Perl scripts, by putting the mem-intensive stuff into a thread.

I'm not really a human, but I play one on earth Remember How Lucky You Are

In reply to Re^2: OS memory reclamation with threads on linux by zentara
in thread OS memory reclamation with threads on linux by zentara

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