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

b1nary g0d b1naryg0d.ws at gmail.com
Mon Sep 27 08:31:21 MST 2010


i have a few 10/100 hubs laying about oddly enough...so he could be using a
hub...but i hope to --- he isnt..and meant swtich..but yeah...ammon..since
hes using a P4 i think he is using hardware from 02 era or earlier....so its
definitly plausible...n then it wouldnt matter how good his router is...few
people on youtube and the fileserver..and the network would tank
--B1naryG0d


On Mon, Sep 27, 2010 at 8:18 AM, Ammon Lauritzen <allaryin at gmail.com> wrote:

> I haven't seen a hub in production since like '02. Let us assume he
> means switch.
>
> But a hub would explain the problems, it would force half duplex
> collisiony nightmares.
>
> 10mbit / 6 clients * 1/2 duplex = 0.8mbit throughput == ~100kbytes/sec ;)
>
> On Mon, Sep 27, 2010 at 9:44 AM, Harry McGregor <micros at osef.org> wrote:
> >  On 9/27/10 7:03 AM, Jim March wrote:
> >> No, I have a router and a hub.  Every machine is getting DHCP off of a
> >> quality router, but the router doesn't have enough physical ports.  So
> >> one port off the router gets split eight ways at a dumb but powered
> >> hub, which should be OK.
> >>
> > Where did you find a hub?
> >
> > There were a few 100mbit hubs, but not many.
> >
> > And even the cheapest 5 or 8 port devices today are switches.
> >
> >
> >                        Harry
> >
> >> Jim
> >>
> >> On Mon, Sep 27, 2010 at 6:55 AM, b1nary g0d <b1naryg0d.ws at gmail.com>
> wrote:
> >>> well keeping that in mind...he mentioned using a hub instead of a
> >>> switch...any network tech will tell you thats a no-no unless you cant
> afford
> >>> anything else
> >>> --B1naryG0d
> >>>
> >>>
> >>> On Mon, Sep 27, 2010 at 6:50 AM, Angus Scott-Fleming <
> angussf at geoapps.com>
> >>> wrote:
> >>>> On 26 Sep 2010 at 17:01, Jim March  wrote:
> >>>>
> >>>>> 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?
> >>>> Back in the day when I used to support a lot of Netware networks,
> problems
> >>>> like
> >>>> this were often caused by 10/100 duplex mismatches caused by crappy
> >>>> autonegociation between the switch and the server's network card.
>  Usually
> >>>> we
> >>>> made the problem go away by forcing the server NIC (and the switch
> port,
> >>>> if we
> >>>> had a manageable switch) to 100 mB Half Duplex.
> >>>>
> >>>> Also, are you running Samba on Ubuntu, with Active Directory?
> >>>> --
> >>>> Angus Scott-Fleming
> >>>> GeoApps, Tucson, Arizona
> >>>> 1-520-290-5038
> >>>> Security Blog: http://geoapps.com/
> >>>>
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> _______________________________________________
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>
>
>
> --
> Ammon Lauritzen
>
> _______________________________________________
> Tucson Free Unix Group - tfug at tfug.org
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