Hi,
On 3/10/2007 1:38 PM, Alexander Marx wrote:
Hi,
I searched for two days and didn't find a solution. Maybe you could give me a
solution.
OS:
Kubuntu 6.10, bacula 2.0.3 from sf.net, compiled with all options, backup
works well.
Storage:
NFS share mounted over gbit network
Backup works relative fine (20GB/hour)
CLIENT:
Windows 2003 standardserver with bacula2.0.3 client installed(all options)
PROBLEM:
SPEED. When i try to restore a little job (1,4MB) it takes about 5 Min to
complete. The win bacula-client tells me something about a transferrate of
6,345 Byte/s ???
... which is really not very impressive...
Backup works fine with 4-6MB/sec but the restore is very slow (unusable).
I have another backupjob, which is over 16GB large. When i should restore this
job, it would take weeks!
I tried to restore with wx-console, bconsole and bweb/brestore.pl. All options
the same result:
SLOW,SLOW,SLOW!
Not exactly astonishing as these are only the means to transport your
input to the DIR. They don't do any real work.
Please help. What am i missing? The clients are only installed without changes
to any OS-options.
The Windows2003 standardserver are used as terminalservers which should not
matter.
I don't really know much about windows performance tuning.
But you could check if there's an unusual high CPU usage during restores.
Also, there might be network problems. If possible, try another NIC in
one the servers, it might help more than any reasonable person would
expect :-)
HARDWARE:
1 KUBUNTU6.10 with bacula (Director,SD,FD) and a nfs mounted share from a NAS
Server (Open-E).
How fast does the NAS server work when reading a volume file? Try 'dd
if=/path/to/a/volume bs=64512 of =/dev/null' and caculate your read
transfer rate.
More sophisticated file system benchmarks do exist, too.
5 Windows 2003 Server standard
How fast can you write to these over the network? Try netio or other
network throughput measuring tools.
All servers have 1000mbit nics and are connected to a gbit switch.
Apart from the above suggestions, you should try to elimintate variables:
- Have you tried to set up a device to store locally, on the Bacula
server, to see if restores from it do perform better?
- Have you tried restoring not to the original client, but to the Bacula
server itself?
Arno
thanx in advance
Alex
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Arno Lehmann
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