Jeff Roberson wrote: > On Mon, 17 Sep 2007, Roman Bogorodskiy wrote: > >> Roman Bogorodskiy wrote: >> >>> Jeff Roberson wrote: >>> >>>> On Sun, 16 Sep 2007, Roman Bogorodskiy wrote: >>>> >>>>> Jeff Roberson wrote: >>>>> >>>>>> This is contrary to the experiences of many others. Can you send me >>>>>> your >>>>>> dmesg? There may be something about your particular hardware that is >>>>>> triggering a bug. ULE is definitely designed to be responsive on the >>>>>> desktop. >>>>> >>>>> Thanks for the quick answer! >>>>> >>>>> Here's my dmesg: http://people.freebsd.org/~novel/misc/dmesg.txt >>>> >>>> Roman, >>>> >>>> The enclosed patch helps things on my system, however, there are still >>>> some >>>> delays due to IO issues. Let me know if this helps. >>> >>> This patch seems to make my system react faster. However I need some >>> time to test it more carefully. >> >> It looks like it's not really so, it's still very slow under load. :( > > Roman, > > Can you please verify that you are not swapping. If you are, try the patch > that I sent. Otherwise, can you try getting KTR_SCHED output for me? Put > the following in your kernel config file: Swap is not used at all (and I don't use WITNESS, etc). I will run through the steps you wrote ASAP. > options KTR > options KTR_COMPILE=KTR_SCHED > options KTR_MASK=KTR_SCHED > options KTR_ENTRIES=65536 > > > Then run the load that exhibits the problem. compile, play a movie, etc. > wait for a particularly bad pause and then run the following: > > sysctl debug.ktr.mask=0 && ktrdump -ct > out && sysctl > debug.ktr.mask=536870 > > It's best to have the command ready in a shell so you can run it in the > closest proximity to the incident. Then gzip the results and email them to > me. > > On my system I'm not able to play a movie while running buildworld due to > long disk waits. However, if I use a dvd driver, mplayer and x windows > both get enough cpu time to play the movie skip free. So this is not a cpu > scheduler problem as such. IO scheduling does feel less responsive than > 6.x but I have not done a side by side comparison. > > Jeff > >> >>>> Thanks, >>>> Jeff >>>> >>>>> >>>>> Roman Bogorodskiy >>>>> >>> >>> >>> Roman Bogorodskiy >> >> >> Roman Bogorodskiy >> > _______________________________________________ > freebsd-current_at_freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe_at_freebsd.org" Roman Bogorodskiy
This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:39:17 UTC