[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Setting Xen scheduler parameters
* pak333@xxxxxxxxxxx <pak333@xxxxxxxxxxx> [2006-06-08 10:38]: > Hi all, > > I am trying to experiment with xen schedulers. I am able to see the scheduler > parameters but unable to modify them. For example is I say > > "xm sched-sedf" I get > Name ID Period(ms) Slice(ms) Lat(ms) Extra > Weight > Domain-0 0 20.0 15.0 0.0 > 1 0 > Guest1 2 100.0 0.0 0.0 > 1 0 > > When I do xm sched-sedf 2 200000 50000 0 0 0 > I get the same things as above > Name ID Period(ms) Slice(ms) Lat(ms) Extra > Weight > Domain-0 0 20.0 15.0 0.0 > 1 0 > Guest1 2 100.0 0.0 0.0 > 1 0 > > How do I change the schduling parameters? Cna someone let me know if I > should be doing something else before changing the params You need to specify which parameters you want to modify as listed in help for sched-sedf: root@bebop:~ # xm help sched-sedf sched-sedf [DOM] [OPTIONS] Show|Set simple EDF parameters -p, --period Relative deadline(ms). -s, --slice Worst-case execution time(ms) (slice < period). -l, --latency scaled period(ms) in case the domain is doing heavy I/O. -e, --extra flag (0/1) which controls whether the domain can run in extra-time -w, --weight mutually exclusive with period/slice and specifies another way of setting a domain's cpu period/slice. The command you want is probably: xm sched-sedf <DOMID> -p 20.0 -s 5.0 root@bebop:~ # xm sched-sedf Name ID Period(ms) Slice(ms) Lat(ms) Extra Weight Domain-0 0 20.0 15.0 0.0 1 0 debian_sarge_3 1 100.0 0.0 0.0 1 0 root@bebop:~ # xm sched-sedf 1 -p 20.0 -s 5.0 root@bebop:~ # xm sched-sedf Name ID Period(ms) Slice(ms) Lat(ms) Extra Weight Domain-0 0 20.0 15.0 0.0 1 0 debian_sarge_3 1 20.0 5.0 0.0 1 0 Hope that helps. -- Ryan Harper Software Engineer; Linux Technology Center IBM Corp., Austin, Tx (512) 838-9253 T/L: 678-9253 ryanh@xxxxxxxxxx _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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