Low fsyncs/seconds, with HW raid 0. (adaptec ASR-5405)

[mastens]

Hi,

Seem to have low Fsync/seconds on my server.
Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz
16gb DDR3 ram.

Using 2x3tb Sata-2 Hdd's.

Anyone with suggestions?


Marius

# pveperf
CPU BOGOMIPS:      54584.41
REGEX/SECOND:      1725088
HD SIZE:           5526.60 GB (/dev/mapper/pve-root)
BUFFERED READS:    308.15 MB/sec
AVERAGE SEEK TIME: 18.13 ms
FSYNCS/SECOND:     203.23
DNS EXT:           86.45 ms

# pveversion -v
pve-manager: 2.0-42 (pve-manager/2.0/3d6d8258)
running kernel: 2.6.32-7-pve
proxmox-ve-2.6.32: 2.0-63
pve-kernel-2.6.32-10-pve: 2.6.32-63
pve-kernel-2.6.32-7-pve: 2.6.32-60
lvm2: 2.02.88-2pve2
clvm: 2.02.88-2pve2
corosync-pve: 1.4.1-1
openais-pve: 1.1.4-2
libqb: 0.10.1-2
redhat-cluster-pve: 3.1.8-3
resource-agents-pve: 3.9.2-3
fence-agents-pve: 3.1.7-1
pve-cluster: 1.0-25
qemu-server: 2.0-28
pve-firmware: 1.0-15
libpve-common-perl: 1.0-21
libpve-access-control: 1.0-17
libpve-storage-perl: 2.0-14
vncterm: 1.0-2
vzctl: 3.0.30-2pve2
vzprocps: 2.0.11-2
vzquota: 3.0.12-3
pve-qemu-kvm: 1.0-7
ksm-control-daemon: 1.1-1

 

[udo]

Hi,

Seem to have low Fsync/seconds on my server.
Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz
16gb DDR3 ram.

Using 2x3tb Sata-2 Hdd's.

Anyone with suggestions?


Marius

# pveperf
CPU BOGOMIPS:      54584.41
REGEX/SECOND:      1725088
HD SIZE:           5526.60 GB (/dev/mapper/pve-root)
BUFFERED READS:    308.15 MB/sec
AVERAGE SEEK TIME: 18.13 ms
FSYNCS/SECOND:     203.23
DNS EXT:           86.45 ms

...[/CODE]

Hi,
avarage seek time of 18 ms looks like other traffic during measuring!
Please try on a calm system.
Other possibility: some raidcontroller enable write-cache only with an connected (and charged) BBU.

Udo

 

[mastens]

Hi,
avarage seek time of 18 ms looks like other traffic during measuring!
Please try on a calm system.
Other possibility: some raidcontroller enable write-cache only with an connected (and charged) BBU.

Udo

Hi,

Well, no load or strain on the filesystem when this is running. and the write-cache is 100% running. even without BBU.

Marius

 # pveperf
CPU BOGOMIPS:      54584.41
REGEX/SECOND:      1668438
HD SIZE:           5526.60 GB (/dev/mapper/pve-root)
BUFFERED READS:    309.66 MB/sec
AVERAGE SEEK TIME: 22.39 ms
FSYNCS/SECOND:     210.72
DNS EXT:           79.09 ms

 

[mastens]

Well, feel kinda stupid now! Always be sure to run the latest firmware... They actually released an new firmware now in february....

# pveperf
CPU BOGOMIPS:      54584.04
REGEX/SECOND:      1644943
HD SIZE:           5526.60 GB (/dev/mapper/pve-root)
BUFFERED READS:    299.89 MB/sec
AVERAGE SEEK TIME: 17.18 ms
FSYNCS/SECOND:     3406.98
DNS EXT:           77.38 ms

This is my results after updating the firmware.. Driver, and that stuff Seek time is still a bit high ... :/

Marius