[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH RFC] handle tsc_tolerance during migration between identical hosts
On Tue, Apr 11, Jan Beulich wrote: > I'm afraid successful testing is not a sufficient criteria here. At > the very least the (so far missing) documentation needs to very > clearly point out the possible risks associated with using this > option. But with there not being any functional change when > the option is not being made use of, I don't think there's a > reason not to add this (for the adventurous). This can be handled by refering to the documentation of 'tsc_mode=native', which is what this change actually does. > What I'm not sure about is whether having this as a global > (instead of per-guest) setting is really all that useful: As > different guests may require different tolerance, having a > single unique setting may not allow people to get very far. Another change on top of this, which adds a per-domU knob, could be added. This also requires a decision if the per-domU or the global knob has higher priority. > > also on the name of the cmdline option? > I'm trying to advocate for dashes instead of underscores, and > I think it should say vtsc instead of tsc, to make clear it has an > effect on guests only. I will use "vtsc-tolerance=$khz". Olaf Attachment:
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