Date: Tue, 18 Jan 2005 22:52:26 +0800 From: Xin LI <delphij@frontfree.net> To: - Felix - <Felix.Schalck@gmx.net> Cc: freebsd-hackers@freebsd.org Subject: Re: Kernel mode programming Message-ID: <1106059946.896.5.camel@spirit> In-Reply-To: <002201c4fd4a$c5a81230$0700a8c0@felix> References: <002201c4fd4a$c5a81230$0700a8c0@felix>
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--=-JaWoyVnXvxLlDmOdxopF Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Of course it's possible to take everything into kernel, but that might not a good idea since you can also easily crash the whole system and pose serious security issues because kernel trust everything that is considered to be a part of it. FreeBSD has provided many interfaces that may help out your problem. You may want to take a look at kqueue(2), sendfile(2), accept_filter(9), etc., and consider switching your application model from one to another. Another thing you may have interest is the ktrace/kdump mechanism, as well as ktr that can reveal what exactly the problem is. Please don't hesitate to submit your patch / suggestion to PR system or appropriate maillist if you think there is some *REAL* problem, as that will help the development.=20 =E5=9C=A8 2005-01-18=E4=BA=8C=E7=9A=84 11:45 +0100=EF=BC=8C- Felix -=E5=86= =99=E9=81=93=EF=BC=9A > Hi everyone, >=20 > Doing lot of syscalls interrupts in a soft seems to take quite a long tim= e, and seriously slow performances. As far as you can't reduce the syscall = amount, is there any way to run apps in kernel mode, in order to call sysfo= nctions directly ? Perhaps by re-writing softs in kernel modules ?=20 >=20 > thanks for your time. Cheers, --=20 Xin LI <delphij delphij net> http://www.delphij.net/ --=-JaWoyVnXvxLlDmOdxopF Content-Type: application/pgp-signature; name=signature.asc Content-Description: =?UTF-8?Q?=E8=BF=99=E6=98=AF=E4=BF=A1=E4=BB=B6=E7=9A=84=E6=95=B0?= =?UTF-8?Q?=E5=AD=97=E7=AD=BE=E5=90=8D=E9=83=A8?= =?UTF-8?Q?=E5=88=86?= -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (FreeBSD) iD8DBQBB7SKq/cVsHxFZiIoRAlIMAJ9LlZ8LLskPpUHRPkV8Yj560gXlhwCfU53H TurJ86gJwa2apPijiEbo7O8= =zl8Z -----END PGP SIGNATURE----- --=-JaWoyVnXvxLlDmOdxopF--
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