I have ProxmoxVE on an OVH dedicated server using their install. They use md by default. Throughput is ok but FSYNCS/SECOND is only ~10.
Disks are 7200rpm: HGST HUS724020ALA640
pveperf /var/lib/vz
CPU BOGOMIPS: 54276.16
REGEX/SECOND: 1829496
HD SIZE: 1809.50 GB (/dev/mapper/pve-data)
BUFFERED READS: 108.65 MB/sec
AVERAGE SEEK TIME: 25.34 ms
FSYNCS/SECOND: 9.57 (!!!!!!!!)
cat /proc/mdstat
Personalities : [raid1]
md4 : active raid1 sda4[0] sdb4[1]
1931980736 blocks [2/2] [UU]
bitmap: 8/15 pages [32KB], 65536KB chunk
md2 : active raid1 sda2[0] sdb2[1]
20478912 blocks [2/2] [UU]
hdparm -W /dev/sda
/dev/sda:
write-caching = 1 (on)
hdparm -W /dev/sdb
/dev/sdb:
write-caching = 1 (on)
pve-manager/4.2-4/2660193c (running kernel: 4.4.8-1-pve)
What the heck is wrong with this ;-)
Disks are 7200rpm: HGST HUS724020ALA640
pveperf /var/lib/vz
CPU BOGOMIPS: 54276.16
REGEX/SECOND: 1829496
HD SIZE: 1809.50 GB (/dev/mapper/pve-data)
BUFFERED READS: 108.65 MB/sec
AVERAGE SEEK TIME: 25.34 ms
FSYNCS/SECOND: 9.57 (!!!!!!!!)
cat /proc/mdstat
Personalities : [raid1]
md4 : active raid1 sda4[0] sdb4[1]
1931980736 blocks [2/2] [UU]
bitmap: 8/15 pages [32KB], 65536KB chunk
md2 : active raid1 sda2[0] sdb2[1]
20478912 blocks [2/2] [UU]
hdparm -W /dev/sda
/dev/sda:
write-caching = 1 (on)
hdparm -W /dev/sdb
/dev/sdb:
write-caching = 1 (on)
pve-manager/4.2-4/2660193c (running kernel: 4.4.8-1-pve)
What the heck is wrong with this ;-)