------- Comment From [email protected] 2019-11-25 16:06 EDT-------
Apologies for the delay, just tested with the 1:2.11+dfsg-1ubuntu7.21 release
and the performance numbers are good in it:
# fio --direct=1 --rw=randrw --refill_buffers --norandommap
--randrepeat=0 --ioengine=libaio --bs=4k --rwmixread=100 --iodepth=16
--runtime=60 --name=job1 --filename=/dev/nvme0n1 --numjobs=4
READ: bw=1216MiB/s (1275MB/s), 300MiB/s-315MiB/s (314MB/s-330MB/s),
io=71.3GiB (76.5GB), run=60001-60002msec
# fio --direct=1 --rw=randrw --refill_buffers --norandommap
--randrepeat=0 --ioengine=libaio --bs=4k --rwmixread=100 --iodepth=16
--runtime=60 --name=job1 --filename=/dev/nvme0n1 --numjobs=64
READ: bw=4081MiB/s (4280MB/s), 58.3MiB/s-69.8MiB/s (61.1MB/s-73.1MB/s),
io=239GiB (257GB), run=60001-60011msec
The same note as before applies that I am using the patched custom
kernel mentioned in previous comments.
$ dpkg -l | grep 1:2.11+dfsg-1ubuntu7.21
ii qemu 1:2.11+dfsg-1ubuntu7.21
ppc64el fast processor emulator
ii qemu-block-extra:ppc64el 1:2.11+dfsg-1ubuntu7.21
ppc64el extra block backend modules for qemu-system and
qemu-utils
ii qemu-kvm 1:2.11+dfsg-1ubuntu7.21
ppc64el QEMU Full virtualization on x86 hardware
ii qemu-system 1:2.11+dfsg-1ubuntu7.21
ppc64el QEMU full system emulation binaries
ii qemu-system-arm 1:2.11+dfsg-1ubuntu7.21
ppc64el QEMU full system emulation binaries (arm)
ii qemu-system-common 1:2.11+dfsg-1ubuntu7.21
ppc64el QEMU full system emulation binaries (common files)
ii qemu-system-mips 1:2.11+dfsg-1ubuntu7.21
ppc64el QEMU full system emulation binaries (mips)
ii qemu-system-misc 1:2.11+dfsg-1ubuntu7.21
ppc64el QEMU full system emulation binaries (miscellaneous)
ii qemu-system-ppc 1:2.11+dfsg-1ubuntu7.21
ppc64el QEMU full system emulation binaries (ppc)
ii qemu-system-s390x 1:2.11+dfsg-1ubuntu7.21
ppc64el QEMU full system emulation binaries (s390x)
ii qemu-system-sparc 1:2.11+dfsg-1ubuntu7.21
ppc64el QEMU full system emulation binaries (sparc)
ii qemu-system-x86 1:2.11+dfsg-1ubuntu7.21
ppc64el QEMU full system emulation binaries (x86)
ii qemu-user 1:2.11+dfsg-1ubuntu7.21
ppc64el QEMU user mode emulation binaries
ii qemu-user-binfmt 1:2.11+dfsg-1ubuntu7.21
ppc64el QEMU user mode binfmt registration for qemu-user
ii qemu-utils 1:2.11+dfsg-1ubuntu7.21
ppc64el QEMU utilities
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https://bugs.launchpad.net/bugs/1847948
Title:
Improve NVMe guest performance on Bionic QEMU
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