Date: Thu, 2 May 2019 18:51:58 +0000 From: "Bapat, Udayan" <Udayan.Bapat@netapp.com> To: "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org> Subject: BSD11 vs BSD12 KVM performance Message-ID: <D2BA45B3-5156-424F-A74A-C41FE0E20CEC@netapp.com>
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Hi All, I work in performance team with NetApp, Inc. During qualification process of BSD11 as a guest, we observed that the cost of rdtsc call has magnified by 10x compared to BSD10. We are using qemu-2.10 that came as a default package in RH7.4. It appears that BSD11 was released before qemu-2.10 so I am not sure if we have any supportability issue and I would need to upgrade QEMU version. In what way, I can do more debugging around this? We are also experimenting with ESX and we didn’t see this issue there. I also could not find any performance benchmarking around BSD+QEMU/KVM. Thank you, Udayan Bapat Software Engineering, Performance Analysis NetApp, Inc.help
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