Date: Sun, 24 Jul 2011 20:50:14 +0200 From: Eduardo Morras <nec556@retena.com> To: freebsd-performance@freebsd.org Subject: Re: Heavy I/O blocks FreeBSD box for several seconds Message-ID: <4D7F86D50198D837@> (added by postmaster@resmaa14.ono.com) In-Reply-To: <5C3302CF-8EE7-489E-8D31-624DA1637B73@mac.com> References: <4E1421D9.7080808@zedat.fu-berlin.de> <CALH631=F4bSgNDE4w0qcXGMgGxZRRwCP9n-H4M0c%2B1UEaqWr7Q@mail.gmail.com> <4E147F54.40908@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> <20110707031151.GA72452@troutmask.apl.washington.edu> <4E155A84.1010100@FreeBSD.org> <4E163856.2050300@zedat.fu-berlin.de> <5C3302CF-8EE7-489E-8D31-624DA1637B73@mac.com>
next in thread | previous in thread | raw e-mail | index | archive | help
At 01:15 08/07/2011, you wrote: >On Jul 7, 2011, at 3:51 PM, Hartmann, O. wrote: > > This is quibbling. On heavy loads on networ, disk et cetera, > isn't there always and also a CPU bound load? > >No. Properly written software blocks when waiting on network or >disk I/O, and doesn't sit there spinning in a busy-wait consuming >CPU until it actually gets more work to do. > >See select(2), kqueue(2), and friends. > >Regards, Excuse me, but where (which maillist) and when did this mail thread started? I have searched this maillist archive and freebsd-hackers but no success. TIA >-- >-Chuck
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4D7F86D50198D837>