Messages in this thread | | | Date | Mon, 17 Aug 1998 15:36:36 +0200 (CEST) | From | Andrea Arcangeli <> | Subject | lil-0 [Linux Interrupt Latency benchmark version 0] |
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I developed a very simple kernel module irq latency benchmark. That module generate an _hardware_ interrupt and account how many cycles pass before the irq handler is started. I just said in the past related thread on linux kernel that it would be possible to generate _hardware_ irq via software on i386.
On my P5MMX233 the irq handlers are started after 4.7uSec (1100 cycles at 233 Mhz) in the most of cases.
I could also generate a train of irq and account the best and the worse latency... probably I' ll do it soon since it' s fun ;-).
You can download lil from here:
ftp://e-mind.com/pub/linux/lil/
Andrea[s] Arcangeli
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