Hi, On Mon, Dec 22, 2008 at 02:48:41PM +0200, Volkan YAZICI wrote: > On Mon, 22 Dec 2008, Tzafrir Cohen <tzaf...@cohens.org.il> writes: > > Could you please giva a usage scenario? > > Compressing a database backup file of size 300GB. > > > Is the task really CPU bound and not i/o bound? > > "top -d 1" tells me that CPU usage is 800%. (BTW, have you ever met with > an input file that is not CPU bound, but I/O bound -- discarding > specifically generated worst-case scenario inputs.)
gzip, bzip2, and lzma seem quite CPU intensive as I saw too. For my local archiving of not-so-big ata, I just tar/cpio them w/o compression. Lazy me. You may wish to try lzop which is optimized for speed. Here are notable Debian compression tools. http://people.debian.org/~osamu/pub/getwiki/html/ch11.en.html#archiveandcompressiontools Osamu -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
