Mailinglist Archive: opensuse (880 mails)

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Re: [opensuse] Slow file copying on openSUSE 12.3
  • From: Roger Oberholtzer <roger@xxxxxx>
  • Date: Wed, 14 Aug 2013 13:58:32 +0200
  • Message-id: <4901494.zr6lKOlxHA@acme>
On Wednesday, August 14, 2013 07:27:51 AM Greg Freemyer wrote:
On Wed, Aug 14, 2013 at 6:37 AM, Roger Oberholtzer <roger@xxxxxx> 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@xxxxxxxxxx
________________________________________

Ramböll Sverige AB
Krukmakargatan 21
P.O. Box 17009
SE-104 62 Stockholm, Sweden
www.rambollrst.se
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