Date: Tue, 29 Oct 2013 08:37:59 -0700 From: Adrian Chadd <adrian@freebsd.org> To: Venkata Duvvuru <VenkatKumar.Duvvuru@emulex.com> Cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>, "freebsd-current@freebsd.org" <freebsd-current@freebsd.org> Subject: Re: taskqueue_enqueue_fast in freebsd 10.0-current Message-ID: <CAJ-VmonOzAmOi6%2B=o0rhwsQL5gwKHUE5HBb5qRsaNMhS9eJXDA@mail.gmail.com> In-Reply-To: <BF3270C86E8B1349A26C34E4EC1C44CB2C728A31@CMEXMB1.ad.emulex.com> References: <BF3270C86E8B1349A26C34E4EC1C44CB2C728A31@CMEXMB1.ad.emulex.com>
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Hi, On 29 October 2013 08:10, Venkata Duvvuru <VenkatKumar.Duvvuru@emulex.com> wrote: > Hi, > In Freebsd 10.0-current with Emulex's OCE driver, I observe that the bott= om half is hogging all the CPU which is leading to system sluggishness. I u= sed the same hardware to check the behavior on 9.1-RELEASE, everything is f= ine, bottom half is not taking more than 10% of the CPU even at the line ra= te speed. But with half the throughput of line rate in Freebsd-10.0-current= all the CPUs peak and "top -aSCHIP" shows that it's all bottom half who is= eating the CPU. Did anything changed in Freebsd-10.0-current that I should= be careful about? Please clarify. spin up hwpmc and see what the story is. Which CPU is it? -a
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