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Full Discussion: slow performing system
Top Forums UNIX for Advanced & Expert Users slow performing system Post 302598292 by Scrutinizer on Tuesday 14th of February 2012 03:21:11 AM
Old 02-14-2012
Hi, have you tried the default IO scheduler? How are you copying your data? What is your IO size? How many IOPS are being performed? How is the disk space offered to the VM by ESXi?

Last edited by Scrutinizer; 02-14-2012 at 04:29 AM..
 

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tapset::scheduler(3stap)												  tapset::scheduler(3stap)

NAME
tapset::scheduler - systemtap scheduler tapset DESCRIPTION
scheduler.cpu_off Process is about to stop running on a cpu See probe::scheduler.cpu_off(3stap) for details. scheduler.cpu_on Process is beginning execution on a cpu See probe::scheduler.cpu_on(3stap) for details. scheduler.tick Schedulers internal tick, a processes timeslice accounting is updated See probe::scheduler.tick(3stap) for details. scheduler.balance A cpu attempting to find more work. See probe::scheduler.balance(3stap) for details. scheduler.ctxswitch A context switch is occuring. See probe::scheduler.ctxswitch(3stap) for details. scheduler.kthread_stop A thread created by kthread_create is being stopped See probe::scheduler.kthread_stop(3stap) for details. scheduler.kthread_stop.return A kthread is stopped and gets the return value See probe::scheduler.kthread_stop.return(3stap) for details. scheduler.wait_task Waiting on a task to unschedule (become inactive) See probe::scheduler.wait_task(3stap) for details. scheduler.wakeup Task is woken up See probe::scheduler.wakeup(3stap) for details. scheduler.wakeup_new Newly created task is woken up for the first time See probe::scheduler.wakeup_new(3stap) for details. scheduler.migrate Task migrating across cpus See probe::scheduler.migrate(3stap) for details. scheduler.process_free Scheduler freeing a data structure for a process See probe::scheduler.process_free(3stap) for details. scheduler.process_exit Process exiting See probe::scheduler.process_exit(3stap) for details. scheduler.process_wait Scheduler starting to wait on a process See probe::scheduler.process_wait(3stap) for details. scheduler.process_fork Process forked See probe::scheduler.process_fork(3stap) for details. scheduler.signal_send Sending a signal See probe::scheduler.signal_send(3stap) for details. SEE ALSO
probe::scheduler.cpu_off(3stap), probe::scheduler.cpu_on(3stap), probe::scheduler.tick(3stap), probe::scheduler.balance(3stap), probe::scheduler.ctxswitch(3stap), probe::scheduler.kthread_stop(3stap), probe::scheduler.kthread_stop.return(3stap), probe::scheduler.wait_task(3stap), probe::scheduler.wakeup(3stap), probe::scheduler.wakeup_new(3stap), probe::scheduler.migrate(3stap), probe::scheduler.process_free(3stap), probe::scheduler.process_exit(3stap), probe::scheduler.process_wait(3stap), probe::scheduler.process_fork(3stap), probe::scheduler.signal_send(3stap), stap(1), stapprobes(3stap) IBM
--- tapset::scheduler(3stap)
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