Hi Jlliagre , MadeInGermany,
Thank you both for your reply and insight.
Quote:
b) the actual usage of swap is not limited by reservations.
Hmm, yes. Unused memory can be used (hopefully), but then, it is no more reported as reserved but as used. (That sounds logical, doesn't it?)
q1) Do you mean if
ProcessA has made reservation on the virtual swap (ram & disk), another
Process B can actually use this reserved space for actual physical paging into RAM and out to swap/disk ?
q2) If i still have free memory (ard 10G reported in memstat's free) but have physical swap being used (ard 3G in swap -l), what does this means then ?
Since reserved but free memory can be use by all, why is physical swap still being use ?
Doing vmstat for 30 minutes, did not see any counters jump for si/so, pi/po, and SR (all 0s) ?
Could i have some kind of spike @ certain timing (using up all the free ram), and cause the physical swap to be use ? < could this be 1 possiblity ?
Regards,
Noob