Date: Tue, 20 Sep 2016 15:52:13 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 212858] FreeBSD 11-stable regression in storage IOPS Message-ID: <bug-212858-8@https.bugs.freebsd.org/bugzilla/>
next in thread | raw e-mail | index | archive | help
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=212858 Bug ID: 212858 Summary: FreeBSD 11-stable regression in storage IOPS Product: Base System Version: 11.0-STABLE Hardware: amd64 OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: patrick_dkt@yahoo.com.hk CC: freebsd-amd64@FreeBSD.org CC: freebsd-amd64@FreeBSD.org I have this VM (FreeBSD 10.3) in this setting: KVM (Fedora 24) VM (FreeBSD 10.3) and there are virtio-scsi disks connected to the VM: 1) OS disk 2) ZFS data disks 3) ZFS ZIL All three files in host file system is file based. The files are stored in the SSD. I have done fio IO test in the FreeBSD VM: The bandwidth and IO is : READ bw=14709KB/s, iops=3677 WRITE bw=4898.8KB/s, iops=1224 After changing the VM to FreeBSD 11.0-stable, other settings remain the same. I do fio IO test again. The new statistics is: READ bw=5651.3KB/s, iops=1412 WRITE bw=1889.1KB/s, iops=472 For reference, the command for fio: fio --filename=./testfile --direct=1 --rw=randrw --refill_buffers --norandommap --randrepeat=0 --ioengine=sync --bs=4k --rwmixread=75 --iodepth=16 --numjobs=8 --runtime=60 --group_reporting --fsync=1 --name=4ktest -size=4G -- You are receiving this mail because: You are the assignee for the bug.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?bug-212858-8>