On Fri, Sep 19, 2008 at 4:53 PM, Luis R. Rodriguez <lrodriguez@xxxxxxxxxxx> wrote: > On Fri, Sep 19, 2008 at 04:31:20PM -0700, Steven Noonan wrote: >> >> I'm seeing the same latency issue I reported originally with the latest >> -tip kernel and WITHOUT irqpoll. > > Damn it. > >> Apparently there's something else to this... > > Steven, > > Can you reproduce this? If so can you tell us how? If you can reproduce > can you try to test this with wireless-testing as well? That is still > based on 2.6.26-rc6 but its just has all the new wireless development > stuff queued up for 2.6.28 so far. Everything else is the same. It's a weird problem, because I'm able to reproduce it by running a kernel with ath9k loaded for a few hours. In this particular case, I only ran this kernel for about 3.5 hours , but the delay when VT switching was getting noticeable. Unload/reload of ath9k and the latency disappeared again. It's definitely ath9k's doing, but I don't know how. I'm finding the delay is most noticeable after 7 hours uptime with ath9k loaded. I'll pull wireless-testing and run that kernel for another 8 hours. What's the URL for the repo? Surely you don't mean the wireless-testing on git.kernel.org that hasn't been touched for almost a week? I kind of wish there was a better debugging facility in ath9k. With ATH_DBG_INTERRUPTS, I see several hundred messages per second, which fills log files up like crazy (I switched to ftrace_printk as Ingo suggested, which has alleviated this somewhat). Is there a way to make it less verbose (perhaps so that it prints data at a rate of no more than 2 or 3 messages per second)? Or maybe the rate at which it prints this stuff is indicative something's wrong? - Steven -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
