| Message ID | 20160318190550.8117.76878.stgit@Solace.station (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 18/03/16 19:05, Dario Faggioli wrote: > Experiments have shown that arranging the scheduing > runqueues on a per-core basis yields better results, > in most cases. > > Such evaluation has been done, for the first time, > by Uma Sharma, during her participation to OPW. Some > of the results she got are summarized here: > > http://lists.xen.org/archives/html/xen-devel/2015-03/msg01499.html > > Signed-off-by: Dario Faggioli <dario.faggioli@citrix.com> > Signed-off-by: Uma Sharma <uma.sharma523@gmail.com> > Reviewed-by: Juergen Gross <jgross@suse.com> Acked-by: George Dunlap <george.dunlap@citrix.com> > --- > Cc: George Dunlap <george.dunlap@eu.citrix.com> > --- > docs/misc/xen-command-line.markdown | 2 +- > xen/common/sched_credit2.c | 2 +- > 2 files changed, 2 insertions(+), 2 deletions(-) > > diff --git a/docs/misc/xen-command-line.markdown b/docs/misc/xen-command-line.markdown > index 0047f94..5d801b8 100644 > --- a/docs/misc/xen-command-line.markdown > +++ b/docs/misc/xen-command-line.markdown > @@ -472,7 +472,7 @@ combination with the `low_crashinfo` command line option. > ### credit2\_runqueue > > `= core | socket | node | all` > > -> Default: `socket` > +> Default: `core` > > Specify how host CPUs are arranged in runqueues. Runqueues are kept > balanced with respect to the load generated by the vCPUs running on > diff --git a/xen/common/sched_credit2.c b/xen/common/sched_credit2.c > index c242dc4..07b8c67 100644 > --- a/xen/common/sched_credit2.c > +++ b/xen/common/sched_credit2.c > @@ -220,7 +220,7 @@ integer_param("credit2_balance_over", opt_overload_balance_tolerance); > #define OPT_RUNQUEUE_SOCKET 2 > #define OPT_RUNQUEUE_NODE 3 > #define OPT_RUNQUEUE_ALL 4 > -static int __read_mostly opt_runqueue = OPT_RUNQUEUE_SOCKET; > +static int __read_mostly opt_runqueue = OPT_RUNQUEUE_CORE; > > static void parse_credit2_runqueue(const char *s) > { >
diff --git a/docs/misc/xen-command-line.markdown b/docs/misc/xen-command-line.markdown index 0047f94..5d801b8 100644 --- a/docs/misc/xen-command-line.markdown +++ b/docs/misc/xen-command-line.markdown @@ -472,7 +472,7 @@ combination with the `low_crashinfo` command line option. ### credit2\_runqueue > `= core | socket | node | all` -> Default: `socket` +> Default: `core` Specify how host CPUs are arranged in runqueues. Runqueues are kept balanced with respect to the load generated by the vCPUs running on diff --git a/xen/common/sched_credit2.c b/xen/common/sched_credit2.c index c242dc4..07b8c67 100644 --- a/xen/common/sched_credit2.c +++ b/xen/common/sched_credit2.c @@ -220,7 +220,7 @@ integer_param("credit2_balance_over", opt_overload_balance_tolerance); #define OPT_RUNQUEUE_SOCKET 2 #define OPT_RUNQUEUE_NODE 3 #define OPT_RUNQUEUE_ALL 4 -static int __read_mostly opt_runqueue = OPT_RUNQUEUE_SOCKET; +static int __read_mostly opt_runqueue = OPT_RUNQUEUE_CORE; static void parse_credit2_runqueue(const char *s) {