Artem Kuchin wrote:
Well, problem with top is that on dual 3GHZ box it alsway s
shows 0% load when not loaded with real traffic (web traffic) no matter
if it is polling of int handling.
Great, so your machine doesn't have any significant overhead
for the timer interrupt. That was your
On Monday 24 September 2007 20:58, Artem Kuchin wrote:
What i don't understand is why timer rate on each cpu is 1995? I have
set it to 1000, not 1995 or 2000. I have seen it showing 2000 on
another box.
So
1) why not 1000?
DOUBLING
I can only make assumptions about the doubling, and I
Nikos Vassiliadis wrote:
On Monday 24 September 2007 20:58, Artem Kuchin wrote:
What i don't understand is why timer rate on each cpu is 1995? I
have set it to 1000, not 1995 or 2000. I have seen it showing 2000
on another box.
So
1) why not 1000?
DOUBLING
I can only make assumptions about
On Tuesday 25 September 2007 12:13, Artem Kuchin wrote:
I have dual CPU with HT. If i turn on HT (and it does help in my case)
it shoud 2000 int x4 = 8000 ints per second. SO, i have saved 200
int/second from NIC and got myself 8000 ints/second from timer.
This kind of load(200intrs/s) earns
Nikos Vassiliadis wrote:
On Tuesday 25 September 2007 12:13, Artem Kuchin wrote:
I have dual CPU with HT. If i turn on HT (and it does help in my
case) it shoud 2000 int x4 = 8000 ints per second. SO, i have saved
200 int/second from NIC and got myself 8000 ints/second from timer.
This kind
Artem Kuchin wrote:
I enabled device polling in the kernel, in nics and
set HZ=1000.
HZ=1000 is the default anyway. You only need to set it
if you want a value other than 1000.
For example, on my notebook I have set HZ=600 because that
machine often used for various media playback (video).
3) Is timer int really generated on each cpu? Am i really wasting cpu
time on ~4000 ints per second?
4000 ints per second is rather nothing on any modern CPU.
Have a look at the top(1) display of an otherwise idle
system. The %interrupt column should be zero, even if
it's processing 4000 timer
Artem Kuchin wrote:
Oliver Fromme wrote:
Artem Kuchin wrote:
3) Is timer int really generated on each cpu? Am i really wasting
cpu time on ~4000 ints per second?
4000 ints per second is rather nothing on any modern CPU.
Have a look at the top(1) display of an otherwise idle
Oliver Fromme wrote:
Artem Kuchin wrote:
Oliver Fromme wrote:
Artem Kuchin wrote:
3) Is timer int really generated on each cpu? Am i really wasting
cpu time on ~4000 ints per second?
4000 ints per second is rather nothing on any modern CPU.
Have a look at the top(1) display of an otherwise
Artem Kuchin wrote:
Oliver Fromme wrote:
Artem Kuchin wrote:
Oliver Fromme wrote:
Artem Kuchin wrote:
3) Is timer int really generated on each cpu? Am i really wasting
cpu time on ~4000 ints per second?
4000 ints per second is rather nothing on any modern CPU.
Have a look at the top(1)
Anyone any clue on this issue:
Artem Kuchin wrote:
I enabled device polling in the kernel, in nics and
set HZ=1000.
How, when i do
omni2# vmstat -i
i see
interrupt total rate
irq14: ata0 47 0
irq15: ata1
I enabled device polling in the kernel, in nics and
set HZ=1000.
How, when i do
omni2# vmstat -i
i see
interrupt total rate
irq14: ata0 47 0
irq15: ata1 41 0
irq28: em0
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