<p dir="ltr">RX bytes:592148079085 (592.1 GB)  TX bytes:3887567471905 (3.8 TB)</p>
<p dir="ltr">Holy smokes, Gandalf!</p>
<div class="gmail_quote">On Jan 23, 2015 7:37 PM,  <<a href="mailto:gandalf@sonic.net">gandalf@sonic.net</a>> wrote:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">As I understand it everything is run from the server and the x.window video is simply sent to the client. It's rather like running a bunch of remote sessions such as with VNC. It's designed for use on low budget devices and old systems, 400mhz or so. I'm sure if I could offload some of that from the sever to the client the issues would disappear.<br>
<br>
On 2015-01-23 16:17, Omar Eljumaily wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
I thought about this a bit more.  I think that it could any of<br>
several different non-CPU, non-Memory resource issues including:<br>
<br>
 1. Display rendering if it's using hardware (graphics card) to<br>
render.<br>
 2. Disk IO<br>
 3. Network IO<br>
 4. Network bandwidth.<br>
 5. Others???<br>
<br>
On 1/23/2015 4:11 PM, Steve S. wrote:<br>
<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Just a sudden thought... might a NIC be mis-set to a slow speed,<br>
causing all sorts of funky backups, mis-queueing, context-switching,<br>
etc...?<br>
<br>
On Fri, Jan 23, 2015 at 4:00 PM, Jordan Erickson<br>
<<a href="mailto:jerickson@logicalnetworking.net" target="_blank">jerickson@logicalnetworking.<u></u>net</a>> wrote:<br>
<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?<br>
You<br>
say you're running 24cpus and 128gigs. Might be a logical<br>
explanation to<br>
house NFS on its own server.. What's your network speed? Thin (or<br>
fat)<br>
client specs? Distro?<br>
<br>
Cheers,<br>
Jordan<br>
<br>
On 01/23/2015 03:52 PM, <a href="mailto:gandalf@sonic.net" target="_blank">gandalf@sonic.net</a> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
It's actually a NFS to a separate server. I'm not sure why it<br>
</blockquote>
was done<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
that way. To me this would probably further congest the network<br>
</blockquote>
while<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
not being nearly as fast as a high performance direct disk<br>
</blockquote>
interface.<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
On 2015-01-23 15:00, Omar Eljumaily wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Not speaking from experience with LTSP server, but my guess<br>
</blockquote></blockquote>
would be<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
that it is a disk io bottleneck.<br>
<br>
<br>
</blockquote></blockquote>
<br>
</blockquote>
<br>
</blockquote>
<a href="http://stackoverflow.com/questions/21617500/understanding-load-average-vs-cpu-usage" target="_blank">http://stackoverflow.com/<u></u>questions/21617500/<u></u>understanding-load-average-vs-<u></u>cpu-usage</a><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
[1]<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
<br>
I believe that web browsers cache on disk most of their<br>
</blockquote></blockquote>
content and<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
media before rendering it.  That's a lot of users hitting a<br>
</blockquote></blockquote>
single<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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 href="mailto:gandalf@sonic.net" target="_blank">gandalf@sonic.net</a> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<br>
I'm seeing very high load averages with low CPU usage. The<br>
</blockquote></blockquote></blockquote>
two main<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
culprits are chrome and firefox. I've got about a hundred<br>
</blockquote></blockquote></blockquote>
users<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
sharing the LTSP server which has some rich resources (24cpus<br>
</blockquote></blockquote></blockquote>
and<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
128gigs).<br>
<br>
<br>
<br>
<br>
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<br>
--<br>
<br>
"When I became a man I put away childish things, including the fear<br>
of childishness and the desire to be very grown up."      -CS<br>
Lewis<br>
<br>
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<br>
<br>
<br>
Links:<br>
------<br>
[1]<br>
<a href="http://stackoverflow.com/questions/21617500/understanding-load-average-vs-cpu-usage" target="_blank">http://stackoverflow.com/<u></u>questions/21617500/<u></u>understanding-load-average-vs-<u></u>cpu-usage</a><br>
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