[Tfug] Need help on a server performance issue...

[b1nary g0d]

first check disk > disk performance then...disk > fileserver daemon over
localhost > disk(access the fileserver over localhost and copy over it from
the disk..to the disk)...so if youve done that youve tested the IDE
Controller chipset and drive....the fileserver daemon(samba, nfs,
etc)....and then test over the network.....like to a client PC......going
straight to thinking its a network problem might bite you in the
butt...start at the physical layer like you would for a network problem..and
then work your way up the application layers...for all you know your daemon
got updated and its now glitchy...hope this helps..
--B1naryG0d


On Sun, Sep 26, 2010 at 5:01 PM, Jim March <1.jim.march at gmail.com> wrote:

> I support exactly one server in the field, for a small office network
> at the office of a lawyer friend.
>
> It's nothing at all special, a basic P4 with 2gigs running Ubuntu and
> a 320gig IDE drive serving five users.  I did a checkout on it last
> night and upgraded it to Lucid, and checked the backup system
> (external 500gig USB drive).  The box also has a 160gig HD inside that
> I'm not using.  Uptime when I took it down yesterday was 145 days so
> things aren't sucking too bad.  Memory usage is minimal...the box
> isn't exactly a powerhouse but doesn't seem overstressed.
>
> Disk to disk throughput copying inside the server one disk to the
> other in Nautilus was around 18mb/s, about what I'd expect.  Ran the
> disk testers in Lucid, the internal disks are 100%.  (Backup drive
> needs replacing!)
>
> BUT, trying to copy any amount from the server to one of the
> workstations wouldn't even break 1mb/s...truly sucked.  The users were
> complaining about performance...I think this is why!
>
> The Ethernet ports in the servers and workstations are 100mb grade.
> The router is a good one, definitely 100 or better (small Sonicwall).
> Ditto one hub (lots of printers and other junk around).
>
> So...I'm thinking I need to see if the Ethernet port in the server is
> going south, OR check for something on the local net dumping excess
> packets.  Been years since I've had to wrassle with something like
> this.  Do I use Wireshark or the like to check for something screwy?
>
> Thoughts welcome.
>
> Jim
>
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