<div dir="ltr">Thanks, this information is really usefull, ok, I'm gonna buy this server:<br>2 Xeon Quad Core 3.0 GHz<br>8 GB Ram<br>4 ethernet ports<br><br><br>this server should be support 400 user, is this possible?<br>
<br><div class="gmail_quote">2008/8/7 Florian Schmidt <span dir="ltr"><<a href="mailto:fschmidt@gmx.at">fschmidt@gmx.at</a>></span><br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi,<br>
<br>
we monitor for Server sizing the following values:<br>
- Number of processes and threads<br>
- nx agents / users<br>
- load average (15min, 1min, 15sec)<br>
- Total CPU usage (user, nice, system, IO, IRQ, SoftIRQ)<br>
- Memory usage (used, free, buffers, cached, swap)<br>
- CPU usage per nx agent<br>
- number of TCP connections<br>
=> all this values where messured by self written perl scripts and plotted with drraw (rrd graphing tool)<br>
<br>
Out of this messurements we found out that our machine:<br>
<br>
SUN Fire X4100 (2x DualCore Opteron 2.2GHz, 16GB Memory, Dual PowerSupply, RAID1)<br>
<br>
Can support at maximum 100 user sessions without getting performance issues for the user.<br>
<br>
The installation is a RedHat Enterprise Linux 4.6 with:<br>
- screensavers disabled (only black screen)<br>
- disabled gamin (gam_server)<br>
- disabled polling of virtual floppy/CD drive (provided by the service processor)<br>
<br>
It should be also possible to load the machine with a higher amount of sessions by providing a higher number of memory. Faster CPUs are not important (nothing should be computed on such a machine anyways) a higher number of cpu cores provides better user scaling. So maybe with a new X4100M2 with AMD QuadCore Opteron Processors and 8x4GB of memory it would be possible to provide 200 or more sessions on a single machine.<br>
<br>
This machine runs login sessions, shells, browser, some small interactive tools, everything taking more CPU or memory get's dispatched to the companies compute farm.<br>
<br>
I think it would be nice when also other people post there results in session scalability here so we can compare and learn.<br>
<br>
Cheers,<br>
Florian<br>
<br>
P.S.: Sorry but currently I am not allowed to post our monitoring scripts.<br>
-------- Original-Nachricht --------<br>
> Datum: Wed, 6 Aug 2008 16:41:05 -0500<br>
> Von: "7th Sign | Iván Rico" <<a href="mailto:7th_sign@soy-geek.com">7th_sign@soy-geek.com</a>><br>
> An: "User Support for FreeNX Server and kNX Client" <<a href="mailto:freenx-knx@kde.org">freenx-knx@kde.org</a>><br>
> Betreff: [FreeNX-kNX] How can I do Sizing?<br>
<div><div></div><div class="Wj3C7c"><br>
> Hello list,<br>
><br>
> I have a question, again =P<br>
><br>
> it is about the sizing of the NX Server, I mean, how do I measure the<br>
> server?<br>
> I want to have the right especification.<br>
><br>
> I was looking for ths but I don't have anything.<br>
><br>
> Ivan Rico<br>
<br>
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