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  • 1.  rsync local copy speed is less

    Posted Sat August 16, 2014 02:48 AM

    Originally posted by: KKN


    I am using AIX 5.3 in DS4700 GPFS filesystem. I am trying to backup a filesystem using rsync to another filesystem (because i dont have tape drive) but the speed in rsync is very low only 30MbPs. But cp is faster than rsync. Anybody help me with rsync speed issue. the command i used

    # rsync -avz /gproj/* /sata/gproj*



  • 2.  Re: rsync local copy speed is less

    Posted Mon August 18, 2014 04:42 PM

    Originally posted by: GarlandJoseph


    What is the performance when you remove the -z (compress option)?



  • 3.  Re: rsync local copy speed is less

    Posted Tue August 19, 2014 06:17 AM

    Originally posted by: KKN


    Ya  i checked still the progress im getting is 32 to 37 MBpS only



  • 4.  Re: rsync local copy speed is less

    Posted Tue August 19, 2014 03:15 PM

    Originally posted by: GarlandJoseph


    I would try running bench marks against smaller  sets of files comparing cp with rsync using time ; tprof; and truss.     You did not qualify the time difference.  Run the cp and rsync on a smaller set of files prefaced by the time command (time cp... verus time rsync).  You should also look at iostat.



  • 5.  Re: rsync local copy speed is less

    Posted Wed August 20, 2014 10:05 AM

    Originally posted by: KKN


    i did those things with time i tried copying a single block iso file of 7 GB using both the commands. i found cp is done in 1.2 minutes and rsync is taking 2.58 minutes 



  • 6.  Re: rsync local copy speed is less

    Posted Wed August 20, 2014 02:04 PM

    Originally posted by: YannickBergeron


    What is your rsync version?



  • 7.  Re: rsync local copy speed is less

    Posted Wed August 20, 2014 11:25 PM

    Originally posted by: KKN


    my rsync version is rsync -3.0.6



  • 8.  Re: rsync local copy speed is less

    Posted Thu August 21, 2014 07:30 AM

    Originally posted by: YannickBergeron


    It's relatively old (2009) but not *that* old

    You may want to give a shot to Rsync 3.1.x (3.1.1 is the latest) as this is part of their release note: Rsync version 3.1.0 has been released. This is a feature release that improves performance, ...