Date: Tue, 12 Jul 2011 11:10:33 -0700 From: Matt <sendtomatt@gmail.com> To: Arnaud Lacombe <lacombar@gmail.com> Cc: mdf@freebsd.org, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: Heavy I/O blocks FreeBSD box for several seconds Message-ID: <4E1C8E19.8010105@gmail.com> In-Reply-To: <CACqU3MUqeMAgC2s8tO46UzWQN50XHn9QZx8g4S8KKuW3DYH4Fg@mail.gmail.com> References: <4E1421D9.7080808@zedat.fu-berlin.de> <20110706162811.GA68436@troutmask.apl.washington.edu> <CACqU3MVLr5VXRovs1uV%2BzHazJi2rrjE9Sp3XzsCPJ0Un06pmDQ@mail.gmail.com> <20110706193636.GA69550@troutmask.apl.washington.edu> <4E14CCE5.4050906@zedat.fu-berlin.de> <CAJ-VmomNcbGggbQePi2kBC7uRJm3BenMNKjsqkH5hFLqudsCvg@mail.gmail.com> <20110707015151.GB71966@troutmask.apl.washington.edu> <CAJ-VmongFDGi0amaqod5_NBQcH%2BguA5QMXtttCjTD=ccB==%2BUQ@mail.gmail.com> <CACqU3MVv-YpttXWYnvraR3PT9nh9P1AWMxoXJPevMRhNt4cr5g@mail.gmail.com> <CAJ-VmokC%2BpzoB_x31UGSNt2oRLXfzOK9aXhCMR3FBm7iGEyaAQ@mail.gmail.com> <CACqU3MXVdQfYEBNb9OLnt7CudiBRdvaq3Cd_HXBC8ZrCpmRFvg@mail.gmail.com> <4E1B67C7.8040402@FreeBSD.org> <CACqU3MW==-XAVxAAoUTuU4CWdzc2isFTu6nnUKRTbnvHF7wLow@mail.gmail.com> <CAFL8=th=M2wnszAzfMERJ3NyFGSaHmdrPbTBVn5PKvZ1DHpCJw@mail.gmail.com> <CAMBSHm9TwOfaY=1TPce-NTukg=oobaqXDx=eAoGJFYWgn4yNuA@mail.gmail.com> <CACqU3MUqeMAgC2s8tO46UzWQN50XHn9QZx8g4S8KKuW3DYH4Fg@mail.gmail.com>
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> Sic... If you allow me the comparison, FreeBSD development is as open > as are the US (and, to some extend, most western country) borders > nowadays open to aliens, and believe me, this is not a compliment. > > - Arnaud > _______________________________________________ > freebsd-current@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" > This is getting offtopic fast. Can we just EGODWIN here? It doesn't fulfill the entire requirements, but it's getting close... Is it possible CPU is the wrong cause of the blocking? Is there perhaps memory contention between ZFS/UFS in OP's setup? Could filesystem/disk performance be the cause and not obscure technicalities of ULE scheduler? Dodgy hardware causing interrupt storms? Ethernet not in polling mode? Matt
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