On Sat, May 16, 2015 at 03:15:21AM +0200, Dario Faggioli wrote: > On Wed, 2015-05-13 at 06:01 +0100, wei.l...@citrix.com wrote: > > > = Prognosis = > > > > The states are: none -> fair -> ok -> good -> done > > > > none - nothing yet > > fair - still working on it, patches are prototypes or RFC > > ok - patches posted, acting on review > > good - some last minute pieces > > done - all done, might have bugs > > > == Hypervisor == > > > * Credit2 production ready (none) > > cpu reservation > > - George Dunlap > > > No work on this yet, AFAIK. I may be able to look into it in a couple of > weeks, but I still am not sure. > > > === Hypervisor X86 === > > > * HT enabled with credit has 7.9 per perf drop. (none) > > kernbench demonstrated it > > http://www.gossamer-threads.com/lists/xen/devel/339409 > > This has existed since credit1 introduction. > > - Dario Faggioli > > > Let me clarify this a bit. > > First of all, let me point out that the issue only shows up in > under-loaded systems (i.e., with less active vcPUs then the host has > pCPUs). In any case, this is something inherent in Credit1 architecture, > and I don't have a sensible idea on how to deal with it without causing > other problems. > > I am working on some improvement to Credit1 (e.g., introducing load > tracking and basing some decisions on it), which hopefully will help > better performance even in this case, but I'm not actively working on > fixing this (if it can be fixed). >
I have moved this to deferred section. Is this OK? Wei. > Regards, > Dario _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
