The patch introduces a new performance counter that counts how many times we go through the load balancing logic in Credit2.
Signed-off-by: Praveen Kumar <kpraveen.l...@gmail.com> Acked-by: Dario Faggioli <dario.faggi...@citrix.com> --- diff --git a/xen/common/sched_credit2.c b/xen/common/sched_credit2.c index ef8e0d8..f212338 100644 --- a/xen/common/sched_credit2.c +++ b/xen/common/sched_credit2.c @@ -1869,6 +1869,8 @@ retry: (unsigned char *)&d); } + SCHED_STAT_CRANK(acct_load_balance); + /* Look for "swap" which gives the best load average * FIXME: O(n^2)! */ diff --git a/xen/include/xen/perfc_defn.h b/xen/include/xen/perfc_defn.h index 900fddd..0d702f0 100644 --- a/xen/include/xen/perfc_defn.h +++ b/xen/include/xen/perfc_defn.h @@ -57,6 +57,7 @@ PERFCOUNTER(vcpu_hot, "csched: vcpu_hot") /* credit2 specific counters */ PERFCOUNTER(burn_credits_t2c, "csched2: burn_credits_t2c") +PERFCOUNTER(acct_load_balance, "csched2: acct_load_balance") PERFCOUNTER(upd_max_weight_quick, "csched2: update_max_weight_quick") PERFCOUNTER(upd_max_weight_full, "csched2: update_max_weight_full") PERFCOUNTER(migrate_requested, "csched2: migrate_requested") _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel