Hi Pro's
I run a bunch of NDMP backups every month from my Nearstore filer. I have connected my six IBM tape drives (incl the library) to my Nearstore filer via fibre channel SAN, 4 GB/s.
Almost every time I start my NDMP jobs I get awful data transfer speed. Ex...
admin@linuxserver:~> rsh filer sysstat -xs 1
CPU NFS CIFS HTTP Total Net kB/s Disk kB/s Tape kB/s Cache Cache CP CP Disk OTHER FCP iSCSI FCP kB/s iSCSI kB/s
in out read write read write age hit time ty util in out in out
96% 0 0 0 1491 6 239 149755 238132 0 643 0s 92% 100% :s 97% 1491 0 0 0 0 0
After some hours I sometimes get around 120 000 kB/s for a few hours, but after that it gets back to the really bad speed.
How can I find what it is that makes my speed that bad most of the times?
I run a bunch of NDMP backups every month from my Nearstore filer. I have connected my six IBM tape drives (incl the library) to my Nearstore filer via fibre channel SAN, 4 GB/s.
Almost every time I start my NDMP jobs I get awful data transfer speed. Ex...
admin@linuxserver:~> rsh filer sysstat -xs 1
CPU NFS CIFS HTTP Total Net kB/s Disk kB/s Tape kB/s Cache Cache CP CP Disk OTHER FCP iSCSI FCP kB/s iSCSI kB/s
in out read write read write age hit time ty util in out in out
96% 0 0 0 1491 6 239 149755 238132 0 643 0s 92% 100% :s 97% 1491 0 0 0 0 0
After some hours I sometimes get around 120 000 kB/s for a few hours, but after that it gets back to the really bad speed.
How can I find what it is that makes my speed that bad most of the times?
