routing for 1000 users and 10Mbit internet.

[hugle]

BM> hugle wrote:
>> BM> hugle wrote:
>> 
>>>>FG> On Mon, 31 May 2004, hugle wrote:
>>>>
>>>>>>dammit..
>>>>>>why then my users eats so much CPU?
>>>>>>look:
>>>>>>CPU states:  0.0% user,  0.0% nice,  0.8% system, 38.0% interrupt, 61.2% idle
>>>>>>Mem: 21M Active, 177M Inact, 133M Wired, 1228K Cache, 199M Buf, 1677M Free
>>>>>>
>>>>>>I have only 61% idle ?
>>>>>>usualy i have ~50 idle..
>>>>>>now I have P4 2.4GHZ
>>>>>>
>>>>>>maybe my setup is bad (kernel I mean)?
>>>>
>>>>FG> My guess is either cheap hardware (NIC) or bad tuning. What NICs are you
>>>>FG> using?
>>>>
>>>>I'm using Intel cards (fxp) at the moment. But from reading the posts
>>>>I've decided to buy GBIT NIC.
>>>>Now the dilema is what brand name.. INTEL or 3COM ? maybe you guys
>>>>could advice?
>> 
>> BM> I've always had good results with fxp cards.
 >>
>> how much users do you have? and what model?

BM> Never more than 100 ... it's been a year or two, so I don't remember the model.

>>>>And yes, my PC is dealing with lots of network traffic.. It's a
>>>>gateway + shaping. It deals with almost 1000 users..
>>>>
>>>>Will this PC (p4 2.4GHZ) deal with 10mbit internet? as a gateway +
>>>>shaper ? with one GBIT NIC connected to 100Mbit swith?
>> 
>> BM> A gbit NIC isn't going to run at gbit speed on a 100mbit switch.
 >>
>> I know, but as I know it'll have more memory, buffer or smth like
>> that. which somehow will help to deal with the problem, right?

BM> Probably.  It just seems like a lot of $$$ to drop when you haven't
BM> tried polling yet.  Keep in mind, that if you try polling and it
BM> doesn't work, you can just turn it back off, and you haven't spent
BM> any $$$ on hardware that didn't help.

>> BM> I would look elsewhere than the NIC.  Intel NICs are good units (in my experience,
>> BM> if someone knows of problems with them, please speak up)
>> from systam -v:
>> 481 fxp0 irq12
>> 226 fxp1 irq3
>> 317 fxp2 irq7
>> I think it is quite high? right?

BM> I guess.  I would expect numbers like that considering the load it's
BM> under.

BM> I'll ask _again_ ... is the machine's performance poor?  Fact is, if
BM> you give it enough network traffic to shape, it's going to raise the
BM> CPU load, no matter what you do.

now the main problem is.. that machine is shaping internet, right?
I did shaping for my subnet, so users in /24 have 100kbits everybody.
But they don't get such speed, they get about 70-80kbps . and if I
try to skipt pipe rules for certain IPs, users get all available
speed (which is left), it's about 500kbps..
so why machine can't pipe it normally ?
Didn't had these problems in the past...

BM> I guess, if you absolutely want to come up with a reason to buy new
BM> hardware, this is as good a reason as any.