[NBLUG/talk] thought I'd ask here also - Anyone have any experience with LTSP?

Jordan Erickson jerickson at logicalnetworking.net
Fri Jan 23 16:00:54 PST 2015


Can you give us a bit more detail as to your network/server setup? You
say you're running 24cpus and 128gigs. Might be a logical explanation to
house NFS on its own server.. What's your network speed? Thin (or fat)
client specs? Distro?


Cheers,
Jordan


On 01/23/2015 03:52 PM, gandalf at sonic.net wrote:
> It's actually a NFS to a separate server. I'm not sure why it was done
> that way. To me this would probably further congest the network while
> not being nearly as fast as a high performance direct disk interface.
>
> On 2015-01-23 15:00, Omar Eljumaily wrote:
>> Not speaking from experience with LTSP server, but my guess would be
>> that it is a disk io bottleneck.
>>
>> http://stackoverflow.com/questions/21617500/understanding-load-average-vs-cpu-usage
>>
>>
>> I believe that web browsers cache on disk most of their content and
>> media before rendering it.  That's a lot of users hitting a single
>> disk drive or array.  Do you have a large RAID array?  SSD?
>>
>> Omar
>>
>> On 1/23/2015 2:19 PM, gandalf at sonic.net wrote:
>>>
>>> I'm seeing very high load averages with low CPU usage. The two main
>>> culprits are chrome and firefox. I've got about a hundred users
>>> sharing the LTSP server which has some rich resources (24cpus and
>>> 128gigs).
>>>
>>>
>>>
>>>
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