On 25.03.2013 02:38, Alexander V. Chernikov wrote: > On 24.03.2013 07:11, Eric van Gyzen wrote: >> At work, we discovered that our application's IPMI thread would often >> use a lot of CPU time. The KCS thread uses DELAY to wait for the BMC, so >> it can run without sleeping for a "long" time with a slow BMC. It also >> holds the ipmi_softc.ipmi_lock during this time. When using adaptive >> mutexes, an application thread that wants to operate on the >> ipmi_pending_requests list will also spin during this same time. > We suffer from the same problem, too. >> >> We see no reason that the KCS thread needs to hold the lock while >> servicing a request. We've been running with the attached patch for a > Well, this seems to be true. I'll try to commit something like this > patch in several days. Done in r248705. > >> few months, with no ill effects. >> >> Eric >> >> >> _______________________________________________ >> freebsd-stable@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-stable >> To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org" > > _______________________________________________ > freebsd-stable@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-stable > To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org" >
-- WBR, Alexander _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
