Messages in this thread | | | Subject | Re: [PATCH] x86/xen: Add "xen_timer_slop" command line option | From | Boris Ostrovsky <> | Date | Wed, 24 Apr 2019 14:47:22 -0400 |
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On 3/22/19 2:29 PM, thibodux@gmail.com wrote: > From: Ryan Thibodeaux <ryan.thibodeaux@starlab.io> > > Add a new command-line option "xen_timer_slop=<INT>" that sets the > minimum delta of virtual Xen timers. This commit does not change the > default timer slop value for virtual Xen timers. > > Lowering the timer slop value should improve the accuracy of virtual > timers (e.g., better process dispatch latency), but it will likely > increase the number of virtual timer interrupts (relative to the > original slop setting). > > The original timer slop value has not changed since the introduction > of the Xen-aware Linux kernel code. This commit provides users an > opportunity to tune timer performance given the refinements to > hardware and the Xen event channel processing. It also mirrors > a feature in the Xen hypervisor - the "timer_slop" Xen command line > option. > > Signed-off-by: Ryan Thibodeaux <ryan.thibodeaux@starlab.io>
Applied to for-linus-5.2
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