Hi, > >2016 is slow (even slower doing windows updates). 2019 is much better. A > >tip I have found is a minimum of 1 cpu, 2 cores and 4 threads to get decent > >speed from that OS (more CPUs in bhyve >tends to make performance worse - in > >my observations - in 2016). Also, use the Virtio collection from RedHat for > >vionet and viostor. We are currently using 0.1.171 without issue. The ahci > >>emulation in itself is extremely slow. NVMe and virtio is really the only > >way to go. > > Is there anything else I can check here? I haven’t got round to testing > networking yet but I’m using nvme for the disk. > It’s basically unusable and there is no way I could put anything production > on it. Just highlighting an icon on the desktop takes several seconds.
>Windows is slow when running on Intel CPUs that don't support APICv. >That are (nearly?) all desktop CPUs, all Xeons before Sandy Bridge and some >Xeons after it. The problem is that Bhyve doesn't implement TPR shadowing. I'm >>currently working on it. The review can be found >here: https://reviews.freebsd.org/D22942 The speedup is about factor 6! >I've received some feedback in a private mail, a second version that adds TPR >thresholds can be found in my Github branch here: > https://github.com/Yamagi/freebsd/commits/wip/tpr_shadowing >A backport to 12.1 (the branch also includes the Intel SpeedShift patches from >https://reviews.freebsd.org/D18028) is here: >>https://github.com/Yamagi/freebsd/commits/production/12.1 >I've applied it to 2 of my production servers about 4 hours ago. Looks good so >far. I'll update the review when I'm sure that it doesn't break anything, >maybe >early next week. Thanks Yamagi, That's brilliant and provides me some hope that I may not have to completely abandon windows guests after all... These servers are just sat next to my desk in testing at the moment so I'll see if I can have a go at applying the patches and testing it in the morning. Regards, Matt _______________________________________________ freebsd-virtualization@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-virtualization To unsubscribe, send any mail to "freebsd-virtualization-unsubscr...@freebsd.org"
