Hi Monica
Perhaps this will help:
http://wiki.lib.sun.ac.za/index.php/SUNScholar/Optimisations
Cheers
hg
*Hilton Gibson*
Ubuntu Linux Systems Administrator
JS Gericke Library
Room 1025C
Stellenbosch University
Private Bag X5036
Stellenbosch
7599
South Africa
Tel: +27 21 808 4100 | Cell: +27 84 646 4758
On 31 December 2014 at 16:49, Monika C. Mevenkamp <[email protected]>
wrote:
> I spent a bit of quality time with our log files; the main finding:
> of the 331679 lines that contain ERROR
> 143433 also say 'Client closed the connection before file download
> was complete’
> These closures happen from all sorts of IP addresses.
>
> According to the time command it takes 1.75sec (elapsed) to do a wget on
> a 18MB bitstream, which gives a speed of 10.6MB/sec. Speed test tells me
> that my connection has 95 Mbps, so I can’t really expect much more.
>
> Are clients impatient ? Is my instances performance erratic ?
>
> I have a reasonable amount of UNIX knowledge, but not necessarily the
> sys admin kind and no real experience performance tuning the
> apache/tomcat/jsp/java/oracle stack. The instance runs in a VM; Our asset
> store is mounted from a remote file system and our database is on a
> different remote server. The instance is in general not all that fast. No
> hard numbers, its just visibly sluggish.
>
> How do I go about investigating performance issues ? I recall seeing
> some info on the DSPACE wiki - but I could not rediscover it. Does anybody
> have tips or links to good HowTos ?
>
>
> Monika
> ________________
> Monika Mevenkamp
> phone: 609-258-4161
> 693 Alexander Road, Princeton University, Princeton, NJ 08544
>
>
>
>
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Dive into the World of Parallel Programming! The Go Parallel Website,
sponsored by Intel and developed in partnership with Slashdot Media, is your
hub for all things parallel software development, from weekly thought
leadership blogs to news, videos, case studies, tutorials and more. Take a
look and join the conversation now. http://goparallel.sourceforge.net
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