Re: BLINK-pause-BLINK-pause syndrome?

Danny ter Haar (dth@cistron.nl)
13 Jan 1997 08:24:16 +0100


>> Linux 2.0.27 client machine, Pentium-100, PCI network card 10 Mbit, AMD
>> chipset based, 10 BaseT network with only two machines and *no* other
>> traffic.
>
>Linux 2.0.27, P100, ISA SMC cards, 10baseT network and this box is connected
>as the only link into a UB GeoRim (Switch) although the same occurs when it is
>on a network with other PC's.
>
server: p6-200, linux 2.0.27, apache http server, 64mb ram, de4x5 TP
client: p5-133, linux 2.0.27, own software, ne2000 ISA

>> Now, what is happening is this: the throughput is extremely "sluggish". If
>> I look at the 10BaseT Ethernet hub, what I observe is this:
>>
>> Now... has anybody of you *any* idea what is happening here? I've searched
>> the Kernel sources for something like "we have seen too many collisions,
>> let's back off and try again in a couple of seconds" or so, but couldn't
>> find anything.
>
>So maybe this is completely different, but then again ;),

We tried yesterday after reading Gert's announcement and the
problems that were reported with ppro/2.0.27/apache to see
if our server would hick-up.

We wrote a small program that will openup simultanious connections
to get a certain file from the www server.

The file in question is 1mb.

40 simultanious fetches resulted in a total bandwith of 920 kb/s coming
from the www server. starting up 200 sessions reported a total bandwith
of 750 kb/s. This was over a busy ethernet where other services were
active (appologis to all our quakeserver users who complaint about slow
response yesterday ;-)

I dont know what to make of it but it seems we have no real problem
in our setup. This particular server will start doing around 350.000 hits
per day with a growth of 10% per week. I will report back if we find
some special events.

Greetings,

Danny

-- 
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