[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Xen 4.1 rc1 test report
On 25/01/2011 06:24, "Haitao Shan" <maillists.shan@xxxxxxxxx> wrote: >> Performance(1 bug) >> 1. guest boot very slowly without limit dom0 cpu number on EX (Intel) >> http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1719 >> > > This bug happened 1 year before. Keir has made a fix with c/s 20841, > which essentially holds the locked (and hence allocated) hypercall > page so that next hypercall can reuse it without doing alloc and mlock > again. By doing this, overhead of rschedule IPI as a result of > frequent mlock is greatly reduced. > > Late in year 2010, libxc introduced a new mechanism called hypercall > buffers, as you can refer c/s 22288~22312. Keir's fix is dropped in > this new framework. As a result, the bug appears again. > Probably the new framework auther can pick up Keir's fix again? Ian Campbell, I think (cc'ed). -- Keir > Shan Haitao _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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