On Mon, Mar 2, 2009 at 4:44 PM, Valery Reznic <valery_rez...@yahoo.com> wrote: > > --- On Mon, 3/2/09, Alexander Indenbaum <alexander.indenb...@gmail.com> wrote: > >> From: Alexander Indenbaum <alexander.indenb...@gmail.com> >> Subject: Re: Kernel memory management problem >> To: "guy keren" <c...@actcom.co.il> >> Cc: "linux-il." <linux-il@cs.huji.ac.il> >> Date: Monday, March 2, 2009, 4:24 PM >> On Mon, Mar 2, 2009 at 1:16 PM, guy keren >> <c...@actcom.co.il> wrote: >> > >> > if you don't care about the speed of copying the >> data and of slowing down >> > the disk media consderably during this copying, try to >> change the copy >> > program, so it will use the O_DIRECT flag when opening >> the file (and then >> > you'll need to make sure the buffers you pass to >> write() are aligned to disk >> > sector size, as well as being in disk sector size >> multiples). this way, >> > you'll bypass the buffer cache altogether. >> > >> > maybe someone else will come up with a better >> response. >> > >> >> choo, nice to chat with you again. Still have an appetite >> to red heads :) ? >> >> Thank you for your answer. >> >> While O_DIRECT is a valid way and probably will solve the >> problem of >> crashing, I would not want to patch wget/sftp/whatever. The >> list is >> long, I have better things to do mean while, instead of >> burning in > Patching every single program is not nessesary. > You can use LD_PRELOAD mechanism to add O_DIRECT to each open > function call in each program (ok - to each dynamically linked program) >
Nice and valid point. Thank you for idea. > -- Alexander Indenbaum _______________________________________________ Linux-il mailing list Linux-il@cs.huji.ac.il http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
