[Samba] CTDB / Samba / GFS2 - Performance - with Picture Link

Volker Lendecke Volker.Lendecke at SerNet.DE
Tue Nov 27 06:05:50 MST 2012

On Tue, Nov 27, 2012 at 01:00:49PM +0000, Vogel, Sven wrote:
> Hello,
> maybe there is someone they can help and answer a question why i get these network screen on my ctdb clusters. I have two ctdb clusters. One physical and one in a vmware enviroment.
> So when i transfer any files (copy) in a samba share so i get such network curves with performance breaks. I dont see that the transfer will stop but why is that so? can i change anything or does anybody know which ist he problem?
> http://dev.kupper-computer.com/intern/transfer_network.jpg

Do a

strace -ttT -f -o /tmp/smbd.strace -p <smbd-pid>

and see in /tmp/smbd.strace which syscalls take long.


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