Messages in this thread | | | Date | Tue, 23 Mar 2004 18:04:26 +0530 | From | Dipankar Sarma <> | Subject | Re: [PATCH] RCU for low latency (experimental) |
| |
On Tue, Mar 23, 2004 at 01:29:25PM +0100, Andrea Arcangeli wrote: > On Tue, Mar 23, 2004 at 03:47:55PM +0530, Dipankar Sarma wrote: > > Here is the RCU patch for low scheduling latency Andrew was talking > > about in the other thread. I had done some measurements with > > I don't see why you're using an additional kernel thread. I told you one > way to implement it via softirq taking advantage of the scheduler-friendy > re-arming tasklets.
I have a patch for that too which I have been testing for DoS in route cache, not latency. It is worth testing it here, however I think re-arming tasklets is not as friendly to latency as executing the rcu callbacks from process context. One thing I have noticed is that more softirqs worsen latency irrespective of the worst-case softirq length.
Thanks Dipankar - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |