Messages in this thread | | | Date | Wed, 22 Jun 2005 23:10:37 +0200 | From | Ingo Molnar <> | Subject | Re: PREEMPT_RT vs I-PIPE: the numbers, part 2 |
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* Karim Yaghmour <karim@opersys.com> wrote:
> Hmm... well, I can't say I'm uninterested. Any chances we can get a > copy of the scripts you use to do the MOAILT (Mother Of All Irq > Latency Tests).
my 'dohell' script is embarrasingly simple:
while true; do dd if=/dev/zero of=bigfile bs=1024000 count=1024; done & while true; do killall hackbench; sleep 5; done & while true; do ./hackbench 20; done & ( cd ltp-full-20040707; su mingo -c ./run40; ) & ping -l 100000 -q -s 10 -f v & du / & ./dortc &
and i also start a preloaded flood-ping externally. ./dortc does:
chrt -f 98 -p `pidof 'IRQ 8'` cd rtc_wakeup ./rtc_wakeup -f 8192 -t 100000
and ./run40 does:
while true; do ./runalltests.sh -x 40; done
it's not rocket science - i'm just starting a sensible mix of latency generators, without letting any of them dominate the landscape.
> > [ I know the results i am seeing, but i wont > > post them as a counter-point because i'm obviously biased :-) I'll let > > people without an axe to grind do the measurements. ] > > That's an extra reason for giving us a copy (or pointing us to one) of > the script you use to run your tests :)
see above. (It's no secret, i described components of this workload in one of my first mails to the adeos thread. Btw., what happened to adeos irq latency testing?)
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