Sun 280R Server Performance Problem

[germen]

We ran simulate on SunFire 280R server with SCSI 10000rpm harddisk,
however the performance is even slower than an IBM notebook?

After some benchmark testing, I found that is a problem of the hard disk
performance. The section below is the result of bonnie++ test

Version 1.03 ------Sequential Output------ --Sequential Input- --Random-
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
WL280-2 2G 13138 62 32880 15 12175 11 19697 99 64476 25 294.5 1
------Sequential Create------ --------Random Create--------
-Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 101 0 +++++ +++ 166 0 101 0 +++++ +++ 212 1

You may notice that the file creation is just 101/second, which compares
to the standard linux machine with 980/second.

Is there any way to tune this performance?

Regards,
Germen

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Posted via [url]http://dbforums.com[/url]

[MrKotter]

germen wrote:

> We ran simulate on SunFire 280R server with SCSI 10000rpm harddisk,
> however the performance is even slower than an IBM notebook?

<snip>

> You may notice that the file creation is just 101/second, which compares
> to the standard linux machine with 980/second.
>
> Is there any way to tune this performance?

There is (tunefs command), but you should check you're running the
latest patches in case its a software issue, like:
[url]http://sunsolve.sun.com/pub-cgi/findPatch.pl?patchId=113454&rev=04[/url]

Also try experimenting with mounting the disk with the logging option.

Rgs,
Kot

[germen]

Thank you for your helps!

After I have enabled the logging the performance came back.

Version 1.03 ------Sequential Output------ --Sequential
Input- --Random-
-Per Chr- --Block-- -Rewrite- -Per Chr-
--Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec
%CP /sec %CP
2G 12104 57 24599 12 11358 11 19732 99 65624
25 286.7 2
------Sequential Create------ --------Random
Create--------
-Create-- --Read--- -Delete-- -Create--
--Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec
%CP /sec %CP
16 2786 16 +++++ +++ 4110 20 4004 21 +++++
+++ 347 1


2786 files per second right now!!!


Many Thanks!
Germen

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[Lars Tunkrans]

germen wrote:

> We ran simulate on SunFire 280R server with SCSI 10000rpm harddisk,
> however the performance is even slower than an IBM notebook?
>
> After some benchmark testing, I found that is a problem of the hard disk
> performance. The section below is the result of bonnie++ test
>
> Version 1.03 ------Sequential Output------ --Sequential Input- --Random-
> Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
> WL280-2 2G 13138 62 32880 15 12175 11 19697 99 64476 25 294.5 1
> ------Sequential Create------ --------Random Create--------
> -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
> files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
> 16 101 0 +++++ +++ 166 0 101 0 +++++ +++ 212 1
>
> You may notice that the file creation is just 101/second, which compares
> to the standard linux machine with 980/second.
>
> Is there any way to tune this performance?
>
> Regards,
> Germen
>
> --
> Posted via [url]http://dbforums.com[/url]

If you are doing a lot of file-I/O and is not interested
in the access times on the file-inodes, you can turn off
access time stamping.

This is done with the flag "noatime".

so in addition to using the "logging" mount option use
"noatime" as well.

Also be aware that UFS performance increses alot if you
run Solaris 9 12/02 or later.

Regards
//Lars


--
================================================== ======
Lars Tunkrans
smtp: lars dot tunkrans at bredband dot net
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