How did you modify the make-file? Is there a general howto for this alter action?
Kind regards, The out-side Op 29 sep. 2012 om 15:46 heeft Bryan N Iotti <[email protected]> het volgende geschreven: > Hi all, > > thought you'd like to know the following... > > I have my rpool on a 146GB SCSI 15K rpm disk. > > I regularly back it up with the following sequence of commands: > - zfs snapshot -r rpool@<DATE> > - cd to backup dir and su > - zfs send -R rpool@<DATE> | gzip > rpool.COMPLETE.<DATE>.gz > > ... as per Oracle manual. > > I was wondering why it was so slow, taking a couple of hours, then I payed > attention to my CPU meter and understood that the normal gzip was running as > a single thread. > > I searched online for a multithreaded version and came across pigz > (http://www.zlib.net/pigz/). I downloaded it, modified the Makefile to use > the Solaris Studio 12.3 cc with the proper CFLAGS ("-fast", for now, no > -m64). I then copied both pigz and unpigz to a directory in my PATH and > modified the last command to: > - zfs send -R rpool@<DATE> | /usr/local/bin/pigz > rpool.COMPLETE.<DATE>.gz > > Now backups are compressed using multiple threads and the process takes about > a quarter of the time. > > Pigz apparently splits the input into blocks of a user definable size (128kb > being the default) and allows for parallel compression, using all available > threads (or less, with the user -p #threads option). > > Hope this helps some of you. Would be nice to have in the pkg repo. > > Bryan > > _______________________________________________ > OpenIndiana-discuss mailing list > [email protected] > http://openindiana.org/mailman/listinfo/openindiana-discuss _______________________________________________ OpenIndiana-discuss mailing list [email protected] http://openindiana.org/mailman/listinfo/openindiana-discuss
