dobro> vos exa dept.core.qat.prd.core
dept.core.qat.prd.core 1937120266 RW 66149 K On-line
...
server dobro.unx.sas.com partition /vicepa RW Site
dobro> time vos dump dept.core.qat.prd.core -t 0 -file /tmp/dump.out
Dumped volume dept.core.qat.prd.core in file /tmp/dump.out
real 0m21.35s
user 0m1.36s
sys 0m3.05s
No network involved here, and still ~3MB/sec. This is AFS 3.4a on HPUX 10.20.
Dan Hamel
SAS Institute
-----Original Message-----
From: Harald Barth [mailto:[EMAIL PROTECTED]]
Sent: Tuesday, August 01, 2000 7:39 PM
To: [EMAIL PROTECTED]
Subject: Volume dump performance.
When doing a ``vos dump 250-meg-volume'' I get performance between 3
and 3.5Mbytes/sec. The funny thing is, hardware does not seem to
matter. I tried this on different architectures for host and clients,
with the network being Fast Ether, FDDI and loopback (!). Raw disk
reads are in the 15-20Mbytes/sec range and network speed is around
10Mbytes/sec.
Hardware this was tested on is for example Digital 344au, Sun450, IBM
7043-140. No big CPU loads were observerd during the tests.
The AFS software levels on therse boxes are 3.4a and 3.6.
If you get better performance (letting you make use of all the
bandwidth you have put into your system), please let me know.
(and how you did it).
With today's performance by backups will take "forever".
Thanks,
Harald.
