[OpenAFS] High Speed AFS Access

Sven Oehme oehmes@de.ibm.com
Wed, 21 Jan 2004 13:12:00 +0100


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okay , i forgot ;fs flush ; fs flushvolume  in my example 

i see with iostat an average write speed of 32-38 MB/sec on the fileserver 
, so why should the speed be lower ? but i will try the afsfsperf tool to 
collect the data .

can you post your config changes on that System ? BosConfig , tcp changes 
... just to test with the same Settings . 

the afs Version would also be good .

Sven

-------------------------------------------------------------------------------------------------------------------------
Dept. A141,  TG/SSG EMEA AIS
Development Leader Stonehenge 
IBM intranet ---> http://w3.ais.mainz.de.ibm.com/stonehenge/
internet ---> http://www-5.ibm.com/services/de/its/filestore.html
Phone (+49)-6131-84-3151
Fax      (+49)-6131-84-6708
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E-Mail : oehmes@de.ibm.com



Jimmy Engelbrecht <jimmy@e.kth.se> 
Sent by: jimmy@e.kth.se
21.01.2004 11:44

To
Sven Oehme/Germany/IBM@IBMDE
cc
Aaron Stanley <astanley@strozllc.com>, openafs-info@openafs.org
Subject
Re: [OpenAFS] High Speed AFS Access






"Sven Oehme" <oehmes@de.ibm.com> writes:

> for example  time dd if=/dev/zero of=/afs/test/testfile.dd count=50 
bs=1M 
> ; sync
> 
> and then used the calculator  :-)

I am sorry to disappoint you but thats completly useless since you this 
way
only test performance of the local cache.

try afsfsperf from the arla-package for usefull numbers.

/Jimmy


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<br><font size=2 face="sans-serif">okay , i forgot ;fs flush ; fs flushvolume
&nbsp;in my example </font>
<br>
<br><font size=2 face="sans-serif">i see with iostat an average write speed
of 32-38 MB/sec on the fileserver , so why should the speed be lower ?
but i will try the afsfsperf tool to collect the data .</font>
<br>
<br><font size=2 face="sans-serif">can you post your config changes on
that System ? BosConfig , tcp changes ... just to test with the same Settings
. </font>
<br>
<br><font size=2 face="sans-serif">the afs Version would also be good .</font>
<br>
<br><font size=2 face="sans-serif">Sven</font>
<br>
<br><font size=2 face="sans-serif">-------------------------------------------------------------------------------------------------------------------------<br>
Dept. A141, &nbsp;TG/SSG EMEA AIS<br>
Development Leader Stonehenge <br>
IBM intranet ---&gt; http://w3.ais.mainz.de.ibm.com/stonehenge/<br>
internet ---&gt; http://www-5.ibm.com/services/de/its/filestore.html<br>
Phone (+49)-6131-84-3151<br>
Fax &nbsp; &nbsp; &nbsp;(+49)-6131-84-6708<br>
Mobil &nbsp; (+49)-171-970-6664<br>
E-Mail : oehmes@de.ibm.com</font>
<br>
<br>
<br>
<table width=100%>
<tr valign=top>
<td width=40%><font size=1 face="sans-serif"><b>Jimmy Engelbrecht &lt;jimmy@e.kth.se&gt;</b>
</font>
<br><font size=1 face="sans-serif">Sent by: jimmy@e.kth.se</font>
<p><font size=1 face="sans-serif">21.01.2004 11:44</font>
<td width=59%>
<table width=100%>
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<div align=right><font size=1 face="sans-serif">To</font></div>
<td valign=top><font size=1 face="sans-serif">Sven Oehme/Germany/IBM@IBMDE</font>
<tr>
<td>
<div align=right><font size=1 face="sans-serif">cc</font></div>
<td valign=top><font size=1 face="sans-serif">Aaron Stanley &lt;astanley@strozllc.com&gt;,
openafs-info@openafs.org</font>
<tr>
<td>
<div align=right><font size=1 face="sans-serif">Subject</font></div>
<td valign=top><font size=1 face="sans-serif">Re: [OpenAFS] High Speed
AFS Access</font></table>
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<table>
<tr valign=top>
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<td></table>
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<br>
<br><font size=2><tt>&quot;Sven Oehme&quot; &lt;oehmes@de.ibm.com&gt; writes:<br>
<br>
&gt; for example &nbsp;time dd if=/dev/zero of=/afs/test/testfile.dd count=50
bs=1M <br>
&gt; ; sync<br>
&gt; <br>
&gt; and then used the calculator &nbsp;:-)<br>
<br>
I am sorry to disappoint you but thats completly useless since you this
way<br>
only test performance of the local cache.<br>
<br>
try afsfsperf from the arla-package for usefull numbers.<br>
<br>
/Jimmy<br>
</tt></font>
<br>
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