Messages in this thread | | | Subject | Re: Softirq preemption | From | Lee Revell <> | Date | Tue, 06 Dec 2005 20:31:48 -0500 |
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On Thu, 2005-12-01 at 14:08 -0500, Lee Revell wrote: > Ingo, > > Is there any chance that the softirq preemption feature from the -rt > kernel can be pushed upstream? >
FWIW, here is the longest latency I see with 2.6.14-rt22, with the same preemption settings as 2.6.14 + PREEMPT. AFAICT a longish network softirq gets interrupted by several disk and network interrupts which adds up to ~1ms. Is there any easy way to break up this code path that could be acceptable for mainline, or does this seem like a reasonable lower limit on achievable latency (until/unless PREEMPT_RT gets merged etc)?
Lee [unhandled content-type:application/x-gzip] | |