Re: Help with cpu stealing

2015-10-28 Thread Victor Echavarry Diaz
X-390@VM.MARIST.EDU Subject: Re: Help with cpu stealing The best way is to first understand your share settings and avoid excess share.See Rob's paper on the topic here "http://www.velocitysoftware.com/relshare.HTML"; Use zalert to detect problems, and have zoperator to give

Re: Help with cpu stealing

2015-10-28 Thread Barton Robinson
Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Barton Robinson Sent: Wednesday, October 28, 2015 11:30 AM To: LINUX-390@VM.MARIST.EDU Subject: Re: Help with cpu stealing No, please don't do this. Having weights in the 1000's is what causes this problem, creates excess share, the lo

Re: Help with cpu stealing

2015-10-28 Thread Veencamp, Jonathon D.
: LINUX-390@VM.MARIST.EDU Subject: Re: Help with cpu stealing No, please don't do this. Having weights in the 1000's is what causes this problem, creates excess share, the looping user takes over. If you don't understand excess share, keep shares in the 100's, and use absolute s

Re: Help with cpu stealing

2015-10-28 Thread Barton Robinson
The best way is to first understand your share settings and avoid excess share.See Rob's paper on the topic here "http://www.velocitysoftware.com/relshare.HTML"; Use zalert to detect problems, and have zoperator to give your operations and applications people early indication. i believe you ar

Re: Help with cpu stealing

2015-10-28 Thread Barton Robinson
weren't at capacity, but with any CPU contention prod would "win" dramatically, and non-prod would be CPU constrained by ZVM. As I said crude, and that strategy it depends what you have running. Jon From: Victor Echavarry Diaz To: LINUX-390@VM.MARIST.EDU Date: 10/28/2015

Re: Help with cpu stealing

2015-10-28 Thread Veencamp, Jonathon D.
y CPU contention prod would "win" dramatically, and non-prod would be CPU constrained by ZVM. As I said crude, and that strategy it depends what you have running. Jon From: Victor Echavarry Diaz To: LINUX-390@VM.MARIST.EDU Date: 10/28/2015 09:28 AM Subject: Help with cpu s

Re: Help with cpu stealing

2015-10-28 Thread Kurt Acker
X-390@VM.MARIST.EDU Date: 10/28/2015 09:28 AM Subject: Help with cpu stealing Sent by:Linux on 390 Port Hi people: We've had several incidents where one Linux server has high CPU utilization and impacts other servers from other applications. We were asked to prevent this from happe

Re: Help with cpu stealing

2015-10-28 Thread Robert J Brenneman
Are you running under z/VM or in native LPARs ? If you are running under z/VM what performance tools do you have available ? On Wed, Oct 28, 2015 at 9:26 AM, Victor Echavarry Diaz < vechava...@evertecinc.com> wrote: > Hi people: > > We've had several incidents where one Linux server has high CPU

Help with cpu stealing

2015-10-28 Thread Victor Echavarry Diaz
Hi people: We've had several incidents where one Linux server has high CPU utilization and impacts other servers from other applications. We were asked to prevent this from happening again so we are looking for the best practices to avoid CPU stealing or CPU waits on one Linux server caused by