Date: Mon, 27 Jun 2011 17:43:00 -0400 From: Rich Felker <dalias@...ifal.cx> To: musl@...ts.openwall.com Subject: Re: Anti-bloat side project On Mon, Jun 27, 2011 at 05:37:39PM -0400, Rich Felker wrote: > On Mon, Jun 27, 2011 at 11:38:05PM +0200, Szabolcs Nagy wrote: > > * Rich Felker <dalias@...ifal.cx> [2011-06-27 17:19:09 -0400]: > > > Bleh. Has there been any serious work to document the causes and how > > > the code could be changed to fix the syscall bloat though? Or just > > > preliminat strace and wc -l? > > > > most of the syscalls are due to python module imports check > > 100 different locations before finding the good one > > > > imho they measured it and concluded that with modern > > filesystem caching this does not matter much.. > > Well they're wrong. Even if the syscall did nothing but enter and > leave kernelspace, it would still be very expensive. Using a module > cache/registry of some sort could solve the problem, or they could > first tackle all the non-open() syscalls which still make up a heavy > share of the cost.. Of course a better question is... why does "hello world" need to load any modules anyway? Perhaps a best first step to fixing the problem would be to demodularize and static link any module that will always be loaded... Rich
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