<html>
<head>
<meta content="text/html; charset=windows-1252"
http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
I thought about this a bit more. I think that it could any of
several different non-CPU, non-Memory resource issues including:<br>
<br>
1. Display rendering if it's using hardware (graphics card) to
render.<br>
2. Disk IO<br>
3. Network IO<br>
4. Network bandwidth.<br>
5. Others???<br>
<br>
<div class="moz-cite-prefix">On 1/23/2015 4:11 PM, Steve S. wrote:<br>
</div>
<blockquote
cite="mid:CAP9UzSCMuU6XiUJoPdcoBGDxBaCAoYeEKUhCDQtSBt5xMTrTeQ@mail.gmail.com"
type="cite">
<div dir="ltr">Just a sudden thought... might a NIC be mis-set to
a slow speed, causing all sorts of funky backups, mis-queueing,
context-switching, etc...?</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On Fri, Jan 23, 2015 at 4:00 PM, Jordan
Erickson <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:jerickson@logicalnetworking.net"
target="_blank">jerickson@logicalnetworking.net</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Can you
give us a bit more detail as to your network/server setup?
You<br>
say you're running 24cpus and 128gigs. Might be a logical
explanation to<br>
house NFS on its own server.. What's your network speed?
Thin (or fat)<br>
client specs? Distro?<br>
<br>
<br>
Cheers,<br>
Jordan<br>
<div class="HOEnZb">
<div class="h5"><br>
<br>
On 01/23/2015 03:52 PM, <a moz-do-not-send="true"
href="mailto:gandalf@sonic.net">gandalf@sonic.net</a>
wrote:<br>
> It's actually a NFS to a separate server. I'm not
sure why it was done<br>
> that way. To me this would probably further congest
the network while<br>
> not being nearly as fast as a high performance
direct disk interface.<br>
><br>
> On 2015-01-23 15:00, Omar Eljumaily wrote:<br>
>> Not speaking from experience with LTSP server,
but my guess would be<br>
>> that it is a disk io bottleneck.<br>
>><br>
>> <a moz-do-not-send="true"
href="http://stackoverflow.com/questions/21617500/understanding-load-average-vs-cpu-usage"
target="_blank">http://stackoverflow.com/questions/21617500/understanding-load-average-vs-cpu-usage</a><br>
>><br>
>><br>
>> I believe that web browsers cache on disk most
of their content and<br>
>> media before rendering it. That's a lot of
users hitting a single<br>
>> disk drive or array. Do you have a large RAID
array? SSD?<br>
>><br>
>> Omar<br>
>><br>
>> On 1/23/2015 2:19 PM, <a
moz-do-not-send="true" href="mailto:gandalf@sonic.net">gandalf@sonic.net</a>
wrote:<br>
>>><br>
>>> I'm seeing very high load averages with low
CPU usage. The two main<br>
>>> culprits are chrome and firefox. I've got
about a hundred users<br>
>>> sharing the LTSP server which has some rich
resources (24cpus and<br>
>>> 128gigs).<br>
>>><br>
>>><br>
>>><br>
>>><br>
>>>
_______________________________________________<br>
>>> talk mailing list<br>
>>> <a moz-do-not-send="true"
href="mailto:talk@nblug.org">talk@nblug.org</a><br>
>>> <a moz-do-not-send="true"
href="http://nblug.org/cgi-bin/mailman/listinfo/talk"
target="_blank">http://nblug.org/cgi-bin/mailman/listinfo/talk</a><br>
>><br>
>> _______________________________________________<br>
>> talk mailing list<br>
>> <a moz-do-not-send="true"
href="mailto:talk@nblug.org">talk@nblug.org</a><br>
>> <a moz-do-not-send="true"
href="http://nblug.org/cgi-bin/mailman/listinfo/talk"
target="_blank">http://nblug.org/cgi-bin/mailman/listinfo/talk</a><br>
> _______________________________________________<br>
> talk mailing list<br>
> <a moz-do-not-send="true"
href="mailto:talk@nblug.org">talk@nblug.org</a><br>
> <a moz-do-not-send="true"
href="http://nblug.org/cgi-bin/mailman/listinfo/talk"
target="_blank">http://nblug.org/cgi-bin/mailman/listinfo/talk</a><br>
<br>
_______________________________________________<br>
talk mailing list<br>
<a moz-do-not-send="true" href="mailto:talk@nblug.org">talk@nblug.org</a><br>
<a moz-do-not-send="true"
href="http://nblug.org/cgi-bin/mailman/listinfo/talk"
target="_blank">http://nblug.org/cgi-bin/mailman/listinfo/talk</a><br>
</div>
</div>
</blockquote>
</div>
<br>
<br clear="all">
<div><br>
</div>
-- <br>
<div class="gmail_signature">"When I became a man I put away
childish things, including the fear of childishness and the
desire to be very grown up." -CS Lewis</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
<pre wrap="">_______________________________________________
talk mailing list
<a class="moz-txt-link-abbreviated" href="mailto:talk@nblug.org">talk@nblug.org</a>
<a class="moz-txt-link-freetext" href="http://nblug.org/cgi-bin/mailman/listinfo/talk">http://nblug.org/cgi-bin/mailman/listinfo/talk</a>
</pre>
</blockquote>
<br>
</body>
</html>