On Wednesday, August 14, 2013 07:27:51 AM Greg Freemyer wrote:
On Wed, Aug 14, 2013 at 6:37 AM, Roger Oberholtzer <roger@opq.se> wrote:
A bit more information. On the slow system: # hdparm -Tt /dev/sdb
/dev/sdb: Timing cached reads: 27784 MB in 1.99 seconds = 13934.26 MB/sec Timing buffered disk reads: 468 MB in 3.01 seconds = 155.63 MB/sec
# hdparm -Tt /dev/sda
/dev/sda: Timing cached reads: 27776 MB in 1.99 seconds = 13930.08 MB/sec Timing buffered disk reads: 584 MB in 3.00 seconds = 194.66 MB/sec
On a system acting as expected: # hdparm -Tt /dev/sdb
/dev/sdb: Timing cached reads: 6852 MB in 2.00 seconds = 3427.26 MB/sec Timing buffered disk reads: 312 MB in 3.01 seconds = 103.56 MB/sec
So at this level they seem to be okay. Not sure what this tells us.
Look in /var/log/warnng for media errors on the drives. That can really slow things down.
No messages in /var/log/messages, except like I listed in the op.
If nothing you're going to have to tell us about the storage stack at a minimum. (volumes / raid / filesystem type)
SuperMicro motherboard with Haswell 4C Core i7-4770 3.4G 8M 5GT/s DMI SATA3 disks (1000MB Western Digital Velicoraptor 10K/ 64, 3,5") via intel chipset spec above. ext4 with defaults. Basic partitioning. No LVM or RAID. We have done an openSUSE 12.3 update, and the problem persists. -- Yours sincerely, Roger Oberholtzer Ramböll RST / Systems Office: Int +46 10-615 60 20 Mobile: Int +46 70-815 1696 roger.oberholtzer@ramboll.se ________________________________________ Ramböll Sverige AB Krukmakargatan 21 P.O. Box 17009 SE-104 62 Stockholm, Sweden www.rambollrst.se -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org