Nick Lunt wrote:
Hi
I've setup a test server -
16 GB RAM
Oracle 10G with 5 GB SGA
6 GB of hugepages
6 GB of memlock for the oracle user
No matter what I change vm.swappiness and vm.pagecache to I cannot get
this sever to use swap. I've got HammerOra hammering the system, RAM
gets down to 80 MB free and kswapd kicks in trying to free pagecache
(sometime getting upto 90% CPU and practically bringing the system to a
halt) but it refuses to do any swapping.
This does not seem logical to me. I know that hugepages will not get
swapped out, the SGA gets put into hugepages, fine. However I have 700
virtual users configured in HammerOra so there are a lot of connections
and PGA activity but none of it ever gets swapped out.
Has anyone come across this before or have any ideas what's going on
please ?
Hi Nick,
What is the output of "cat /proc/meminfo | grep -i commit" and value of
vm.overcommit_memory and vm.overcommit_ratio ?
Vu
_______________________________________________
rhelv5-list mailing list
[email protected]
https://www.redhat.com/mailman/listinfo/rhelv5-list
