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Forum Discussion
Performance issues after 6.4 update
Our 516 unit is behaving so badly after the 6.4 update, constant SMB connections dropouts, checksum errors while copying large files, unresponsive and laggy web interface. During backup jobs to an external USB drive, the performance drops dramatically for the rest of the users.
It's a complete and utter disaster. Get a .1 fix ASAP, I'm getting constant phone calls from our users complaining about our file server, which used to work flawlessly before this **bleep**ty upgarde.
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I agree... 6.2.4 was really stable as was 6.3.5RC2 but 6.4.0 is constantly having issues with dropouts here. One moderator likes to blame the choice of drive I use but they worked great under 6.2.4.
It's sad they pushed out such an unpolished firmware as an update. It's not like these are betas, and if anyone has a production server like you do they're in for a world of hurt!
Exactly. I'm using WD Red NAS drives, they all get scrubbed, defragged and balance every two weeks and I keep my NAS in top shape. Only two apps running (Anti Virus and Surveillance), UPS power and load balancing Gigabit links. This shouldn't be happening.
wd red is just a tag over desktop drives
should use wd re or red pro
We've had performance and worst, machines disconnecting from the share ever since the 6.4 upgrade.
So far these are the things we've had to do to get a temporary fix:
- Disable BitRot
- Switch off snapshots
- Remove the last week or so's snapshots
All of these issues seem to be down to the process 'btrfs-cleaner' kicking in every time a snapshot is being churned.
During this process (which runs at up to 100% cpu) the admin console is unresponsive and if a user is copying files to the share, they get kicked off the share.
By disabling snapshots, the NAS doesn't need to do this periodic cleanup of the metadata and users can work as normal.
The major downside is no snapshots, so no going back in time.
We have an escalated support case with a Level 3 tech, so hopefully an interim firmware release will be imminent.
I'm also starting to believe that the problem relies in the snapshot creation process. I've since disabled and deleted all snapshots for the time being and see if the performance improves. The shares that had the most issues were those with hourly snapshots, which is why I think our users we're being kicked ou so often.
Hoping for a quick fix soon.
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