On Thu, Sep 27, 2007 at 02:57:40PM -0400, Stefhen Hovland wrote: > Is this possible for pbzip2 to run on a tar which outputs to standard out? > > I am trying to speed up a backup process which takes hours, i have > about 100g of uncompressed data which will be tar'd up and is > currently running thru gzip. This will be running on a 16 cpu box > which would greatly speedup this issue. > > from: > > tar cf - . | gzip > /tmp/file.tar.gz > > to: > > tar cf - . | pbzip2 > /tmp/file.tar.bz2 > > > This doesnt seem to work, is it because there is no way to split the > stdio to multiple processors on the fly?
I wonder if it would help to create a named-pipe (fifo). Would that trick the compressor (whichever) to treat it as a file (that doesn't have an EOF until the true end) and run on a different processor? Never having had more than one core, I can't test this. Doug. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
