Hi,
I am having performance issues with my file server running SUSE Linux
10.0 (64bit on an Athlon64). The systems data disks consist of 4
200GB Samsung SATA drives on separate onboard ports on the motherboard
which are then configured together as md0 using Linux software raid5
(giving 600GB usable). This is then added to a LVM volume group and
has several logiccal volumes and filesystems created on it
Bonnie output (using a 2GB file on one of the LVM filesystems housed
on md0) is as follows:
belgarath:/data02 # bonnie -s 2000
Bonnie 1.4: File './Bonnie.8151', size: 2097152000, volumes: 1
Writing with putc()... done: 46912 kB/s 75.1 %CPU
Rewriting... done: 19625 kB/s 12.4 %CPU
Writing intelligently... done: 47675 kB/s 25.8 %CPU
Reading with getc()... done: 27555 kB/s 51.3 %CPU
Reading intelligently... done: 46055 kB/s 15.3 %CPU
Seeker 1...Seeker 2...Seeker 3...start 'em...done...done...done...
---Sequential Output (nosync)--- ---Sequential Input-- --Rnd Seek-
-Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --04k (03)-
Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU
belgar 1*2000 46912 75.1 47675 25.8 19625 12.4 27555 51.3 46055 15.3 265.3 2.3
The system is connected to a Netgear gigabit switch using cat6 or
cat5e (tried both) via a PCI Netgear GA302T Gigabit card. Ethtool
reports that the card is connected at 1000FD and no network errors are
shown. I think that the Netgear card uses the tg3 driver
The Windows box is connected to the same gigabit switch using a 3com
3C2000 gigabit card and has a single local SATAII disk. The network
card reports is is connected at 1000FD.
Accessing the system via samba from a Windows XP box seems quite slow
as does accessing it via SFTP, (a sustained SFTP transfer using
Filezilla peaked at 310kb/s .... a 670MB iso image has just taken 35+
minutes to transfer across between them).
Tests were performed when both the systems and the network were quiet
and are reproducable both using other systems and copy files from
non-raided disks on the Linux box.
Has anyone got any suggestions on where the bottleneck may be and what
I could possibly do to improve matters. From the Bonnie figures I am
guessing the issue is more likely to lie on the networking side rather
than the disk side?
Cheers
Tim
--
Tim Hempstead
[EMAIL PROTECTED]
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