Thanks Rob Victor Echavarry System Programmer Operating Systems EVERTEC, LLC
-----Original Message----- From: Linux on 390 Port [mailto:LINUX-390@VM.MARIST.EDU] On Behalf Of Rob van der Heij Sent: Friday, April 21, 2017 4:34 PM To: LINUX-390@VM.MARIST.EDU Subject: Re: High steal on z/linux guest On 21 April 2017 at 22:10, Alan Altmark <alan_altm...@us.ibm.com> wrote: > > I googled "z linux steal time" and got a lot of hits. But, again, > it's not a z-only phenomenon. > LOL Look what I googled :-) http://www.rvdheij.nl/Presentations/cpusteal.pdf "Concern about latency without looking at processor speed is like complaining about boarding times for a long flight: certainly if you would walk the way you could start right now rather than wait for an hour. But the actual response time of the transaction is likely much worse." Alternatively, suggest your Unix peers to reduce the number of virtual CPUs for their guests. It will certainly help lower steal time. Rob ---------------------------------------------------------------------- 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/ WARNING: This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please delete it immediately. Please note that any views or opinions presented in this email are solely those of the author and do not necessarily represent those of EVERTEC, Inc. or its affiliates. Finally, the integrity and security of this message cannot be guaranteed on the Internet, and as such EVERTEC, Inc. and its affiliates accept no liability for any damage caused by any virus transmitted by this email.
