But ... what does 100% mean? 100%? latent demand to 101%? 110%? IFLs going suspend? David Kreuter
-------- Original Message -------- Subject: Re: High cpu utilization on vm/linux LPAR From: Mark Post <mp...@suse.com> Date: Fri, January 10, 2014 1:26 pm To: LINUX-390@VM.MARIST.EDU >>> On 1/10/2014 at 11:00 AM, Victor Echavarry Diaz <vechava...@evertecinc.com> wrote: > From a couple of days one of our Linux LPAR are continuously using 100% of > two cpu. We are on EC12 with z/VM SSI 6.2, two IFL's CPU's, 61440 MB of RAM, > 4096 Extended RAM and the guest are running on SLES 11SP2. Do anyone has > similar problems or there is a kernel update for this issue. Based on Barton's analysis of the data, it looks like this is just what the workload is consuming, and not a problem. In general, running at 100% busy is _not_ a problem on System z, unless you're not meeting your service level agreements with your customers. (Some people would envy you getting the absolute maximum out of your hardware. 100% utilization while meeting service levels is a _goal_ to them, not something to be avoided.) Mark Post ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/ ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
