Hi, On 23/01/2020 08:43, Michael Hinton wrote: > On Monday, January 20, 2020 at 4:32:45 AM UTC-7, Ralf Ramsauer wrote: > > Hi Michael, > > More exits, more overall penalty. Depends on your test case. You can > use > jailhouse cell stats to account for exits. > > > Great idea. I started recording deltas in vmexit totals to better > understand what is going on. Thanks. > > I experienced a similar performance drop a while ago. In my case, it > was > misconfigured CAT -- too little cache for the non-root cell hit the > performance. > > > Is CAT Intel's Cache Allocation Technology? I was unaware that Jailhouse > had support for this yet. My configs don't specify anything regarding > the cache, so what happens by default? Do you have more information you > can refer me to?
Yes, Jailhouse comes with CAT support, but not every Intel CPU supports CAT.´CAT is configured by the inmate config via .cache_regions, see example inmates. Ralf > > I'm going to describe my setup in more detail in my next post. > > -Michael > > -- > You received this message because you are subscribed to the Google > Groups "Jailhouse" group. > To unsubscribe from this group and stop receiving emails from it, send > an email to [email protected] > <mailto:[email protected]>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/jailhouse-dev/2c22faaa-1d5a-4ace-a7ed-7d614773a37c%40googlegroups.com > <https://groups.google.com/d/msgid/jailhouse-dev/2c22faaa-1d5a-4ace-a7ed-7d614773a37c%40googlegroups.com?utm_medium=email&utm_source=footer>. -- You received this message because you are subscribed to the Google Groups "Jailhouse" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jailhouse-dev/210c9279-ce8b-67ff-ae88-6becb7f06b55%40oth-regensburg.de.
