[Gluster-users] unusual gluster-fuse client load

[Ben Turner]

----- Original Message -----
> From: "Khoi Mai" <KHOIMAI at UP.COM>
> To: gluster-users at gluster.org
> Sent: Monday, April 27, 2015 10:43:27 AM
> Subject: [Gluster-users] unusual gluster-fuse client load
> 
> All,
> 
> I have an unusual situation.
> 
> I have a client whose 1 fuse mount to a volume adds increased load to the
> machine when its mounted. When it is not mounted the server is well below
> 1.00 in top/uptime for load avg.
> 
> The strange part is, this gluster volume is mounted across multiple servers
> in my environment where the load is not observed.
> 
> I've tried strace, and saw nothing usual. I've even rebooted the client
> thinking, that there is might be "some odd cache" but there was no change as
> the load started to climb after the reboot, and mounting of the fuse
> filesystem.
> 
> Nothing in the client/server logs regarding that fuse volume.
> 
> Would the community have any suggestions that I might investigate more of? I
> haven't tried to wireshark yet. But i'm not certain I know what to look for
> if I did capture the tcp dump.

What process is causing load to increase?  Normally I look at ps or top and see what is stuck in D or is using all my CPU.  Do you have anything scanning the gluster mount or accessing it in the background?  Just mounting on a client shouldn't cause the system to get too much busier, I would think that something is accessing the mount.  What is the load when you see when you mount?

-b
 
> Thanks,
> 
> Khoi Mai
> Union Pacific Railroad
> Distributed Engineering & Architecture
> Senior Project Engineer
> 
> 
> 
> 
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