Date: Tue, 18 Jan 2005 14:05:23 +0000 From: Bruce M Simpson <bms@spc.org> To: - Felix - <Felix.Schalck@gmx.net> Cc: freebsd-hackers@freebsd.org Subject: Re: Kernel mode programming Message-ID: <20050118140523.GE3054@empiric.icir.org> In-Reply-To: <002201c4fd4a$c5a81230$0700a8c0@felix> References: <002201c4fd4a$c5a81230$0700a8c0@felix>
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On Tue, Jan 18, 2005 at 11:45:05AM +0100, - Felix - wrote: > Doing lot of syscalls interrupts in a soft seems to take quite a long time, 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 sysfonctions directly ? Perhaps by re-writing softs in kernel modules ? For 95% of applications syscall overhead shouldn't have a major impact on performance. It's difficult to offer any real advice here because you haven't said what the application is, or shown any profiling figures. Maybe you should review your design? Trying to avoid repeating what other posters have said here. BMS
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