Neil,

Not all files are created equal you can say... :) My explanation would be that some files are being read from the read-ahead cache, and some from the disks. This makes a difference. Also - some more HTTP commands here and there, and there you have your small difference.

Eyal.

---------------------------------------------------------------------- eTraitel - I'm the new eBuzzword around !!! ---------------------------------------------------------------------- Eyal Traitel - Filer Escalation Engineer CNA, MCSE, CSA, NACA

Network Appliance BV Holland Office Center Kruisweg 799b 2132 NG, Hoofddorp The Netherlands Office: +31 23 567 9685 Cellular: +31 6 5497 2568 Email: eyal@netapp.com ---------------------------------------------------------------------- Get answers NOW! - NetApp On the Web - http://now.netapp.com ----------------------------------------------------------------------

-----Original Message----- From: neil lehrer [mailto:nlehrer@ibb.gov] Sent: Tuesday, March 06, 2001 12:39 AM To: toasters; John Ederma; Curt Huyser Subject: cpu util during ndmp backup

hi,

we are finally getting legato networker going with ndmp. my f760 is running 5.36r2. it has a directly attached spectralogic treefrog. the sysstat data below is running at 1 second intervals. the filer is not being used yet, we are testing. i notice a regular pattern of cpu util going from about 10 to 20 to 30 to 40% and then back down. then quiet at about 7% for about 10 seconds then up and down again. is this normal for backup? thanks.

7% 0 0 0 0 0 5328 0 0 5714 41 7% 0 0 0 1 0 5477 16 0 5658 41 7% 0 0 0 1 0 6152 0 0 6205 41 6% 0 0 0 1 0 5653 0 0 5843 41 CPU NFS CIFS HTTP Net kB/s Disk kB/s Tape kB/s Cache in out read write read write age 7% 0 0 0 0 0 5676 16 0 5407 41 7% 0 0 0 1 1 5645 0 0 6335 41 7% 0 0 0 1 0 5876 0 0 5960 41 7% 0 0 0 1 1 5456 16 0 5530 41 10% 0 1 0 1 1 6190 0 0 6150 41 22% 0 0 0 14 26 8312 0 0 8479 41 29% 0 0 0 14 26 12840 212 0 12485 41 41% 0 0 0 40 78 10868 0 0 10936 41 22% 0 0 0 14 26 9709 0 0 9533 41 28% 0 0 0 27 52 9820 16 0 9400 41 22% 0 0 0 14 25 11816 0 0 12349 41 10% 0 0 0 1 1 7207 0 0 7011 41 31% 0 0 0 27 52 9232 16 0 9400 41 12% 0 0 0 0 0 9305 0 0 9779 41 8% 0 0 0 1 0 6916 0 0 6820 41 9% 0 0 0 1 0 7471 16 0 7565 41 10% 0 0 0 1 0 7184 0 0 7864 41 11% 0 0 0 1 0 7223 188 0 7257 41 9% 0 0 0 1 0 7216 24 0 7188 41 8% 0 0 0 0 0 7000 0 0 7188 41