Re: Load balancing behavior for sched autogroup

2013-04-08 Thread Tim Chen
On Fri, 2013-03-29 at 16:35 -0700, Paul Turner wrote: > I'm surprised that patch would have much effect in either direction; > it changes the amortization of accounting, but not the actual numbers > -- especially for a persistent load. We'll take a look. > Hi Paul, Wonder if you have a chance t

Re: Load balancing behavior for sched autogroup

2013-03-29 Thread Paul Turner
I'm surprised that patch would have much effect in either direction; it changes the amortization of accounting, but not the actual numbers -- especially for a persistent load. We'll take a look. On Fri, Mar 29, 2013 at 4:20 PM, Tim Chen wrote: > During our testings of 3.8 kernel, we noticed th

Load balancing behavior for sched autogroup

2013-03-29 Thread Tim Chen
During our testings of 3.8 kernel, we noticed that after the patch Revert "sched: Update_cfs_shares at period edge" (commit 17bc14b7), the load between the sockets or larger system can have large imbalance. For example, for a 4 socket Westmere-EX (10 cores/socket), we notice the loadings betw