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. Eric _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "[email protected]"
