Hello list

I have noticed that some dump files take much longer than others to
write to tape. Furthermore, it is always dump files from the *same*
host that take so long. So if I do a level 0 dump of host A I might
see 4000 KB/s tape write rates. If I do a level 0 dump of host B I
might only see 1000 KB/s tape write rates. Can anyone explain this
behavior?

Here is part of an Amanda report which shows these large tape write
rate disparities:


DUMP SUMMARY:
                                       DUMPER STATS                 
 TAPER STATS
HOSTNAME   DISK        L   ORIG-KB    OUT-KB  COMP%  MMM:SS    KB/s 
MMM:SS    KB/s ------------------------
------------------------------------------ ---------------
borneo.shc -corporate    25821120  12795031   49.6   67:34  3155.9  
45:57  4641.0
borneo.shc -cs_shared    18595830  10108659   54.4   55:42  3024.9 
145:29  1158.1
borneo.shc -_shared_2    12075330   8126030   67.3   40:23  3353.9  
30:27  4447.4
britain.sh /shared01     25085110  12979245   51.7   37:29  5771.6 
172:00  1257.7
sumatra.sh //java/c$      7488930   7488930    --    70:04  1781.5  
22:30  5548.0

(brought to you by Amanda version 2.4.4p1)



-- 
Kurt Yoder
Sport & Health network administrator