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btrfs locking at 74% on 6.1.6
I'm running 6.1.6 final - I STARTED with a fresh install and rebuild on a 6.1.6RC I had all my data offloaded; I started copying it back. I've since updated to 6.1.6 final. I am now copying it back...
I can upgrade to final (but I'll wait to hear from you that I should since we're in the middle of troubleshooting)
Plex is often running and scanning -- but nothing too crazy.
I was just able to get it to almost lock up with a huge load due to lftp mirroring a directory to the server --
transfer started at 60MB/sec -- after a few seconds it slowed to kbs (halted, really) -- and I was SSH'd in -- wouldn't even execute my 'w' command to see the load. :/
After about 10 minutes the load finally dropped below 20 and it executed
I ran top to see a process md127_raid5 using a lot of CPU
Repeating the transfer with top running shows the following competing for CPU:
proftpd
md127_raid5
flush-btrfs-2
kswapd0
Load is holding around 5
Transfer going 30-35MB/sec
And now after a few minutes it locked up again.
Here's what top looks like: https://www.dropbox.com/s/08bus9zeiss1lds/Screenshot%202014-02-17%2001.30.32.png
Note the 99.5% wait
Then it finally refreshed 1 time a few minutes later:
https://www.dropbox.com/s/30r4ubjlxp9abzf/Screenshot%202014-02-17%2001.32.14.png
Many more minutes later as it finally recovered, it looked like:
https://www.dropbox.com/s/k9u5xsgy65rr637/Screenshot%202014-02-17%2001.35.14.png
(note the drastically reduced wait time, sky-high load which is dropping)
Plex is often running and scanning -- but nothing too crazy.
I was just able to get it to almost lock up with a huge load due to lftp mirroring a directory to the server --
transfer started at 60MB/sec -- after a few seconds it slowed to kbs (halted, really) -- and I was SSH'd in -- wouldn't even execute my 'w' command to see the load. :/
After about 10 minutes the load finally dropped below 20 and it executed
I ran top to see a process md127_raid5 using a lot of CPU
Repeating the transfer with top running shows the following competing for CPU:
proftpd
md127_raid5
flush-btrfs-2
kswapd0
Load is holding around 5
Transfer going 30-35MB/sec
And now after a few minutes it locked up again.
Here's what top looks like: https://www.dropbox.com/s/08bus9zeiss1lds/Screenshot%202014-02-17%2001.30.32.png
Note the 99.5% wait
Then it finally refreshed 1 time a few minutes later:
https://www.dropbox.com/s/30r4ubjlxp9abzf/Screenshot%202014-02-17%2001.32.14.png
Many more minutes later as it finally recovered, it looked like:
https://www.dropbox.com/s/k9u5xsgy65rr637/Screenshot%202014-02-17%2001.35.14.png
(note the drastically reduced wait time, sky-high load which is dropping)
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