On Mar 16 at 15:34, Giorgos Keramidas suggested:
Free memory (or the lack thereof) isn't the issue though.
The issue is this: Swap: 8192M Total, 116K Used, 8192M Free and that's the piece of the puzzle that has us all utterly baffled.
No way in creation this box should be swapping.
Do you, by any chance, have vm.swap_idle_enabled set to 1?
No, it isn't: gonzo# sysctl -a |grep vm.swap_idle_enabled vm.swap_idle_enabled: 0
Strange. AFAIK, processes are not swapped out to disk unless there is a severe memory shortage. The usual case is to have them "paged" out, which is a bit different.
That was my understanding also, and that's what's baffling us
Unless, of course, there _was_ a short period of memory shortage, some processes were swapped out (a pair of idle getty instances, for example) and they were never swapped back in because they are still idle.
You can probably track this down to the specific process or processes that have the PS_INMEM bit turned off in their proc->p_sflag. But 116K seems too small to be a complete process.
This is going way above my head now, but great as a learning process anyway!
May I ask how we would go about tracking processes with the PS-INMEM bit turned off? That sounds as if - to me, still a journeyman on the road to knowledge - grepping multiple source trees might be necessary, which frankly is a daunting process (to say the very least). Is there one meta-search string that would show this? and if so, where should this search be applied?
Regards, -Colin -- Colin J. Raven Wed Mar 16 14:43:00 CET 2005
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