Sluggish browsing, minimal I/O

[jye]

Hi everyone,

I'm working with an 81-drive, 6 volume system that was intended to be high performance and ended up being considered nearline storage. Upon looking at the storage pool configurations it's definitely not configured for performance, however I believe the issues go far beyond that.

Simply loading the properties of a folder within a volume mounted on a windows box will hang up the system for all other volumes, regardless of where they're connecting from. Browsing will be extremely slow and it could take a half hour just to count to 50k files. The system specs should allow for much more:

2X E5-2620v2
96GB Memory
Intel X520-DA1

Write speeds hover around 400MB/s, while reads can get up to 250MB/s depending on the volume. I'll be reconfiguring these volumes at some point to increase those numbers, but I'd like to get to the point where I can utilize more than one volume and one user at a time before the system acts like its stuck in a tar pit.

Where would be a good place to start?

Thanks for your help!

 

[jye]

I should also note that none of the reporting works. I inhereted this system and am fairly new to FreeNAS, but I've been reading up on it quite a lot. The I/O issues are a big mystery to me given no more than one person is using this system at a time for right now. Hoping someone can point me in a direction of where to continue focusing my efforts.

 

[dlavigne]

Understanding the pool layout is a good start. Paste the full output of zpool status within code tags.

Also, is there anything in /var/log/messages when the slowdown occurs?