On Wed, 4 Nov 2020 at 19:30, Dave Jones <djo...@itconline.com> wrote What is the CP overhead of managing this? The one Linux guest that is > running here reports a %steal of 15-17%, which I think is a bit high. > Could this be configured better? > Thanks, appreciate it.
You’re right that EDEV overhead would show in the guest’s TTIME and thus noticed by Linux as steal. Your configuration with application data on FCP and just OS on EDEV is good practice. I would not expect OS disk I/O as high that you notice, unless when you’re very tight on memory and drop libraries and executables from page cache as soon as the program terminates. You’d see those things with stateless agents that fire up a program every 10 seconds to report some data. My rules of thumb are too dated, but you should look with vmstat -d or other tools whether there really is enough I/O to worry. Then look at what is being read or written (application logs could be an issue and can be moved to FCP) 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://www2.marist.edu/htbin/wlvindex?LINUX-390
