Date: Wed, 11 Mar 2015 15:16:44 +0100 From: Julien Cigar <jcigar@ulb.ac.be> To: Polytropon <freebsd@edvax.de> Cc: opendaddy@hushmail.com, freebsd-questions@freebsd.org Subject: Re: Limiting CPU on some processes on web server Message-ID: <20150311141644.GS6600@mordor.lan> In-Reply-To: <20150311151157.5baea8b7.freebsd@edvax.de> References: <20150311122656.96F2020341@smtp.hushmail.com> <20150311141347.1013d42d.freebsd@edvax.de> <20150311134232.838ABC0451@smtp.hushmail.com> <20150311144958.3ef9519d.freebsd@edvax.de> <20150311140420.1646CC044F@smtp.hushmail.com> <20150311151157.5baea8b7.freebsd@edvax.de>
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[-- Attachment #1 --] On Wed, Mar 11, 2015 at 03:11:57PM +0100, Polytropon wrote: > On Wed, 11 Mar 2015 14:04:19 +0000, opendaddy@hushmail.com wrote: > > On 11. mars 2015 at 1:41 PM, "Polytropon" <freebsd@edvax.de> wrote: > > > > > >The main differnce in functionality is that ulimit -t defines > > >the limit as time, whereas cpulimit defines it as percentage > > >of CPU resources used. > > > > > >Another difference is that ulimit comes with FreeBSD's default > > >scripting shell, whereas cpulimit is a Linux program that has > > >to be compiled from source, after porting it, of course. :-) > > > > > > > Sounds really tempting especially considering those other cpulimit > > compile errors. > > If you manually add "#include <libgen.h>" to src/cpulimit.c > and remove "#ifdef __APPLE__" ... "#endif" from tests/process_iterator_test.c > around the "#include <libgen.h>" line, you can run "gmake" > (in src/ and /test, or at the top level), and it will successfully > build. there is sysutils/cpulimit too .. > > Result: > > $ ./cpulimit > Error: You must specify a cpu limit percentage > Usage: cpulimit [OPTIONS...] TARGET > OPTIONS > -l, --limit=N percentage of cpu allowed from 0 to 200 (required) > -v, --verbose show control statistics > -z, --lazy exit if there is no target process, or if it dies > -i, --include-children limit also the children processes > -h, --help display this help and exit > TARGET must be exactly one of these: > -p, --pid=N pid of the process (implies -z) > -e, --exe=FILE name of the executable program file or path name > COMMAND [ARGS] run this command and limit it (implies -z) > > You can try that "quick & dirty" modification and check if > the cputime program _works_ for you. > > > > > Is there a CPU time limit equivalent to say 20% or have I totally misunderstood? > > I'd say it's hard to calculate or estimate absolute CPU time > from relative resource consumption (load). You will probably > have to test this with the real application you want to limit. > > > > -- > Polytropon > Magdeburg, Germany > Happy FreeBSD user since 4.0 > Andra moi ennepe, Mousa, ... > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" -- Julien Cigar Belgian Biodiversity Platform (http://www.biodiversity.be) PGP fingerprint: EEF9 F697 4B68 D275 7B11 6A25 B2BB 3710 A204 23C0 No trees were killed in the creation of this message. However, many electrons were terribly inconvenienced. [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAABCgAGBQJVAE5MAAoJEAi2KiTKQR5poUMQALZx3K7tImN9Tw/IzByaB22V +OklM+M6DrLcq8K+AdBvWfIWW+ZP+7v5mkvlZoK0WmdoU1Ahhg8KdCNSq60iCdIR Y9uFDe1yaH8q9U/otTfsEGEwhG4pHlQWoXHyeLPvULqVBnnGl7RlH8TLscMuDZoF zo8BDmzOERIvcHrDaZyfK4sk4MDzvbrHghvI8uoDUQQTxM4xHAfRmFXgnlPRsJ+t BDeOpK8aSrviJj9Os9LKU1nM8z3DOSwlxBT4NX75ZsgsPZVquP1FNgEgjDOec5qY 0h8/fdap9bfMoyj+mF3jxm1E0OisNP6YmzOUR3r4eCFOufYpM3UCp40GYlFlXz2Y 82vcsaUVYKaXEglPD73wkT1BTM2IOtYIfvTR4AVGyLhjXxS7mWUiYrLIGvhbTBNK gz1aZOaJqAeg78xUEn9QqORtgDfbSBxiycjQyvR8JZlCCoU/Cky010cJRuhQBezS ubp7zdsIJxJdAbBAAQOIw23dWsaE3gagpil/8/dDYW6M1EfiE+HyYRhHb8j+D20z OlgbkSW2iQXbImjSZ4oMKLtUxZ1J52a0NrUw439wBgCRcQ2jNx+DVKfJpT1Hxepw KwmdkeH2dphLDyrFWWGECLQHpkZUyzXvdQECIxK3+NV/HP91Hph4T8CIVIvfljAz Q65IITr1wXFxYnmK2MdU =lwFR -----END PGP SIGNATURE-----help
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