enabled”?
From: Anish
Date: Saturday, May 4, 2019 at 8:54 PM
Cc: "Bapat, Udayan" ,
"freebsd-virtualization@freebsd.org"
Subject: Re: BSD11 vs BSD12 KVM performance
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Hi Udayan,
Intel VM-x and AMD SVM allow hypervisor to intercept TSC access for
save/restore of VM migration, so when these intercepts are enabled, rdtsc
will require switch between root and non-root mode which is expensive and
may cost few hundreds of cpu cycles. Is it possible that one has these
Am 02.05.2019 um 20:51 schrieb Bapat, Udayan:
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.
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-
