rt10 shows a big improvement over rt8 ################################################## etup Thruput CPU% Nvidia 2.6.21-rc5-rt8 938 65% netperf @51 hardirq @50 softirq @50 Nvidia 2.6.21-rc5-rt10 938 32% netperf @51 hardirq @50 softirq @50 very nice for a "work in progress" I ran the netperf test a few times and one of the times the netperf test would no longer talk to the server. I had to reboot the rt client to get netperf to talk again. I did have cycle soak running which may have contributed to the problem. Also when netperf is not running the hard IRQs associated with the NIC use a constant 2% load. Thanks, Dave -------------- Original message ---------------------- From: Ingo Molnar <mingo@xxxxxxx> > > * David Sperry <dave_sperry@xxxxxxxx> wrote: > > > > there are a few other things i'm working on to improve this. I've > > > uploaded -rt9 which is the current state of affairs. Note that using > > > -rt9 you'll likely only see IRQ-8406 overhead in the system, because > > > i've added an optimization to do process the softirq-net-tx workload > > > in the hardirq thread if the priority of the two is the same (which > > > is the default behavior). But -rt9 is still work in progress that is > > > not fully finished yet: in some cases i'm seeing 'fluctuating > > > performance' problems on forcedeth that werent there before. > > > > I tried -rt9 and saw some odd 'fluctuating performance'. I'll try it > > again tomorrow when I am much closer to the box's power button. > > could you try -rt10? I've improved hardirq/softirq threading performance > some more, and have tuned the forcedeth driver too. > > Ingo - To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
