On 08/08/2013 09:19, Eric van Gyzen wrote: > On 08/06/2013 14:23, J David wrote: >> On Tue, Aug 6, 2013 at 1:59 PM, Eric van Gyzen <[email protected]> wrote: >>>> on an otherwise idle amd64 system with 4 CPUs. The first command in the >>>> build.log file: >>>> >>>> rm -rf /usr/obj/home/freebsd/tmp >>>> >>>> took over three minutes. It should have taken about three /seconds/. >>>> >>>> "uptime" reported a load average of around 1.00. >>>> "top" showed no threads (user or kernel) using CPU. >>>> "iostat" showed an average of less than 20 tps on ada0. >>>> "rm" was usually in the RUN state. >> We are looking at something similar. Would you be able to try to >> reproduce it using a kernel with: >> >> nooptions SCHED_ULE >> options SCHED_4BSD >> >> to see if it makes a difference? It seems to, but the problem is >> inconsistent enough that I can't be sure. > The 4BSD scheduler does //not// exhibit this problem. I tested with the > latest releng/9.2 (r254054) and an otherwise GENERIC config.
To be thorough, I built a GENERIC kernel at the same rev, and it still exhibits the problem. Eric _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[email protected]"
