<p><br />
Hi All,</p>
<p>I have a system with PVE 1.8 with HW raid card (Intel RS2BL040), without BBU, 4 x 1.5Tbyte hdd in RAID10</p>
<p>I found that, the pveperf shows incredibeli low FSYNC, even 0.89.</p>
<p>Guys, seriously, what the hack could happen to cause this incredibely low measurement? Here are some test data and details about the system and settings.</p>
<p>Does anybody meet this kind of situation?</p>
<p>Any hints, documentation on the web are welcome.</p>
<p>Thank you,</p>
<p>István</p>
<p> </p>
<p><strong>Details</strong></p>
<p> </p>
<p>hdparm -tT /dev/pve/data <br />
/dev/pve/data:<br />
Timing cached reads: 15292 MB in 2.00 seconds = 7654.83 MB/sec<br />
Timing buffered disk reads: 522 MB in 3.00 seconds = 173.97 MB/sec<br />
hn3:~# hdparm -tT /dev/pve/root <br />
/dev/pve/root:<br />
Timing cached reads: 15002 MB in 2.00 seconds = 7509.61 MB/sec<br />
Timing buffered disk reads: 532 MB in 3.29 seconds = 161.89 MB/sec</p>
<p>-----------</p>
<p># pveperf <br />
CPU BOGOMIPS: 40530.64<br />
REGEX/SECOND: 820137<br />
HD SIZE: 94.49 GB (/dev/mapper/pve-root)<br />
BUFFERED READS: 114.54 MB/sec<br />
AVERAGE SEEK TIME: 12.01 ms<br />
FSYNCS/SECOND: 377.33<br />
DNS EXT: 46.11 ms<br />
DNS INT: 53.96 ms</p>
<p>pveperf /var/lib/vz<br />
CPU BOGOMIPS: 40530.64<br />
REGEX/SECOND: 841456<br />
HD SIZE: 1663.48 GB (/dev/mapper/pve-data)<br />
BUFFERED READS: 153.84 MB/sec<br />
AVERAGE SEEK TIME: 26.99 ms<br />
FSYNCS/SECOND: 280.32<br />
DNS EXT: 49.93 ms<br />
DNS INT: 44.12 ms</p>
<p>----------- RAID settings -----------</p>
<p>Settings<br />
================<br />
Current Time : 12:9:50 6/2, 2012<br />
Predictive Fail Poll Interval : 300sec<br />
Interrupt Throttle Active Count : 16<br />
Interrupt Throttle Completion : 50us<br />
Rebuild Rate : 30%<br />
PR Rate : 30%<br />
BGI Rate : 30%<br />
Check Consistency Rate : 30%<br />
Reconstruction Rate : 30%<br />
Cache Flush Interval : 4s<br />
Max Drives to Spinup at One Time : 4<br />
Delay Among Spinup Groups : 2s<br />
Physical Drive Coercion Mode : 1GB<br />
Cluster Mode : Disabled<br />
Alarm : Enabled<br />
Auto Rebuild : Enabled<br />
Battery Warning : Enabled<br />
Ecc Bucket Size : 15<br />
Ecc Bucket Leak Rate : 1440 Minutes<br />
Restore HotSpare on Insertion : Enabled<br />
Expose Enclosure Devices : Disabled<br />
Maintain PD Fail History : Enabled<br />
Host Request Reordering : Enabled<br />
Auto Detect BackPlane Enabled : SGPIO/i2c SEP<br />
Load Balance Mode : Auto<br />
Use FDE Only : No<br />
Security Key Assigned : No<br />
Security Key Failed : No<br />
Security Key Not Backedup : No<br />
Default LD PowerSave Policy : Controller Defined<br />
Maximum number of direct attached drives to spin up in 1 min : 0 <br />
Any Offline VD Cache Preserved : No<br />
Allow Boot with Preserved Cache : No<br />
Disable Online Controller Reset : No<br />
PFK in NVRAM : No<br />
Use disk activity for locate : No</p>
<p> </p>
<p>Default Settings<br />
================<br />
Phy Polarity : 0 <br />
Phy PolaritySplit : 0 <br />
Background Rate : 30 <br />
Strip Size : 256kB<br />
Flush Time : 4 seconds<br />
Write Policy : WB<br />
Read Policy : Adaptive<br />
Cache When BBU Bad : Disabled<br />
Cached IO : No<br />
SMART Mode : Mode 6<br />
Alarm Disable : Yes<br />
Coercion Mode : 1GB<br />
ZCR Config : Unknown<br />
Dirty LED Shows Drive Activity : No<br />
BIOS Continue on Error : No<br />
Spin Down Mode : None<br />
Allowed Device Type : SAS/SATA Mix<br />
Allow Mix in Enclosure : Yes<br />
Allow HDD SAS/SATA Mix in VD : Yes<br />
Allow SSD SAS/SATA Mix in VD : No<br />
Allow HDD/SSD Mix in VD : No<br />
Allow SATA in Cluster : No<br />
Max Chained Enclosures : 16 <br />
Disable Ctrl-R : Yes<br />
Enable Web BIOS : Yes<br />
Direct PD Mapping : No<br />
BIOS Enumerate VDs : Yes<br />
Restore Hot Spare on Insertion : Yes<br />
Expose Enclosure Devices : No<br />
Maintain PD Fail History : Yes<br />
Disable Puncturing : No<br />
Zero Based Enclosure Enumeration : No<br />
PreBoot CLI Enabled : Yes<br />
LED Show Drive Activity : Yes<br />
Cluster Disable : Yes<br />
SAS Disable : No<br />
Auto Detect BackPlane Enable : SGPIO/i2c SEP<br />
Use FDE Only : No<br />
Enable Led Header : Yes<br />
Delay during POST : 0 <br />
EnableCrashDump : No<br />
Disable Online Controller Reset : No<br />
EnableLDBBM : No<br />
Un-Certified Hard Disk Drives : Allow<br />
Treat Single span R1E as R10 : No<br />
Max LD per array : 16<br />
Power Saving option : All power saving options are enabled<br />
Default spin down time in minutes: 30 <br />
Enable JBOD : No<br />
TTY Log In Flash : No<br />
Auto Enhanced Import : No<br />
BreakMirror RAID Support : No<br />
Disable Join Mirror : No<br />
Enable Shield State : No<br />
Time taken to detect CME : 60s<br />
</p>
<p> </p>
<p>pve-manager: 1.8-18 (pve-manager/1.8/6070)<br />
running kernel: 2.6.32-4-pve<br />
proxmox-ve-2.6.32: 1.8-33<br />
pve-kernel-2.6.32-4-pve: 2.6.32-33<br />
qemu-server: 1.1-30<br />
pve-firmware: 1.0-11<br />
libpve-storage-perl: 1.0-17<br />
vncterm: 0.9-2<br />
vzctl: 3.0.28-1pve1<br />
vzdump: 1.2-14<br />
vzprocps: 2.0.11-2<br />
vzquota: 3.0.11-1<br />
pve-qemu-kvm: 0.14.1-1<br />
ksm-control-daemon: 1.0-6 </p>