On 2009-07-03 16:02, Jerry Geis wrote: >> />/ I have a 3G AM2 quad core CPU... x86_64 centos 5.3 >> />/ >> />/ >> />/ When I am doing backing up to my external USB drive >> />/ my system becomes sluggish. Clicking on a thunderbird compose >> />/ takes some time to pop up the window. Typeing doesnt keep up etc... >> />/ >> />/ Is there something I can change so this backup doesnt slow my system >> />/ down so much? I dont see HOW it can be taking so much CPU. >> />/ top at times shows 0 idle or 11% idle from a USB backup. >> />/ >> />/ Thanks for any suggestions. >> / >> > I have four gig RAM, I am just doing a "rsync -a /home > /mnt/external_usb/backup.XX.YY.2009" > My server has RAID-1 SATA 1 TB drives (two of course for raid) and I am > doing a straight > rsync to an external 1TB usb connected disk. Not doing any compression > at this time. > > The "renice" did help some mentioned earlier... "ionice" is very usefull in this case as well. If possible try to find a solution using eSATA instead of USB, which would work much smoother. -- Paul Bijnens, Xplanation Technology Services Tel +32 16 397.525 Interleuvenlaan 86, B-3001 Leuven, BELGIUM Fax +32 16 397.552 *********************************************************************** * I think I've got the hang of it now: exit, ^D, ^C, ^\, ^Z, ^Q, ^^, * * quit, ZZ, :q, :q!, M-Z, ^X^C, logoff, logout, close, bye, /bye, ~., * * stop, end, ^]c, +++ ATH, disconnect, halt, abort, hangup, KJOB, * * ^X^X, :D::D, kill -9 1, kill -1 $$, shutdown, init 0, Alt-F4, * * Alt-f-e, Ctrl-Alt-Del, Alt-SysRq-reisub, Stop-A, AltGr-NumLock, ... * * ... "Are you sure?" ... YES ... Phew ... I'm out * ***********************************************************************