Re: [CentOS] Setting overcommit_memory=2 kills system

2012-05-18 Thread Michael Coffman
On Fri, May 18, 2012 at 11:23 AM, John R Pierce wrote: > On 05/18/12 10:09 AM, Michael Coffman wrote: > > 99 2425 1 4052 136382123488 > /opt/ictools/64bit/synopsys-aserver/bin/AServer > ^^ > > well, I dunno what that process is, but thats a HUGE vsiz

Re: [CentOS] Setting overcommit_memory=2 kills system

2012-05-18 Thread John R Pierce
On 05/18/12 10:09 AM, Michael Coffman wrote: > 99 2425 1 4052 136382123488 > /opt/ictools/64bit/synopsys-aserver/bin/AServer ^^ well, I dunno what that process is, but thats a HUGE vsize. -- john r pierceN 37, W 122 sa

Re: [CentOS] Setting overcommit_memory=2 kills system

2012-05-18 Thread Michael Coffman
On Fri, May 18, 2012 at 10:39 AM, Les Mikesell wrote: > On Fri, May 18, 2012 at 11:24 AM, Michael Coffman > wrote: > > > >> If you are already overcommitted, what do you expect to happen when > >> you say not to allow that? The kernel doesn't have a really good way > >> to handle that situation

Re: [CentOS] Setting overcommit_memory=2 kills system

2012-05-18 Thread Michael Coffman
On Fri, May 18, 2012 at 10:39 AM, Les Mikesell wrote: > On Fri, May 18, 2012 at 11:24 AM, Michael Coffman > wrote: > > > >> If you are already overcommitted, what do you expect to happen when > >> you say not to allow that? The kernel doesn't have a really good way > >> to handle that situation

Re: [CentOS] Setting overcommit_memory=2 kills system

2012-05-18 Thread Michael Coffman
On Fri, May 18, 2012 at 10:39 AM, Les Mikesell wrote: > On Fri, May 18, 2012 at 11:24 AM, Michael Coffman > wrote: > > > >> If you are already overcommitted, what do you expect to happen when > >> you say not to allow that? The kernel doesn't have a really good way > >> to handle that situation

Re: [CentOS] Setting overcommit_memory=2 kills system

2012-05-18 Thread Les Mikesell
On Fri, May 18, 2012 at 11:24 AM, Michael Coffman wrote: > >> If you are already overcommitted, what do you expect to happen when >> you say not to allow that?   The kernel doesn't have a really good way >> to handle that situation (or any other OOM condition for that >> matter...). >> >> > OK.  S

Re: [CentOS] Setting overcommit_memory=2 kills system

2012-05-18 Thread Michael Coffman
On Fri, May 18, 2012 at 7:50 AM, Les Mikesell wrote: > On Fri, May 18, 2012 at 8:46 AM, Michael Coffman > wrote: > > > >> Just because one machine fails gracefully does not mean the next will. > >> > > > > I don't even know what the above means. > > > > > >> But really buy some ram for real. OR

Re: [CentOS] Setting overcommit_memory=2 kills system

2012-05-18 Thread Les Mikesell
On Fri, May 18, 2012 at 8:46 AM, Michael Coffman wrote: > >> Just because one machine fails gracefully does not mean the next will. >> > > I don't even know what the above means. > > >> But really buy some ram for real. OR solve the real problem. >> >> > > Well that's just ridiculous.  'Real probl

Re: [CentOS] Setting overcommit_memory=2 kills system

2012-05-18 Thread Michael Coffman
On Fri, May 18, 2012 at 6:15 AM, John Stanley wrote: > On Thu, 2012-05-17 at 13:08 -0600, Michael Coffman wrote: > > > vm.overcommit_ratio = 50 > ^^ > > Try changing the commit ratio to a greater value (yes you can go over > 100). > Then sysctl -w vm.overcom

Re: [CentOS] Setting overcommit_memory=2 kills system

2012-05-18 Thread John Stanley
On Thu, 2012-05-17 at 13:08 -0600, Michael Coffman wrote: > vm.overcommit_ratio = 50 ^^ Try changing the commit ratio to a greater value (yes you can go over 100). Then sysctl -w vm.overcommit_memory=2 Just because one machine fails gracefully does not me

[CentOS] Setting overcommit_memory=2 kills system

2012-05-17 Thread Michael Coffman
Hello, In general I am in the habit of turning off memory overcommit because I believe it's a bad thing in a multi-user environment. This was never a problem on rhel5 systems, but on rhel6, I am having issues.When I try to set overcommit_memory=2, my system locks up. It basically behaves a