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Forum Discussion
BTRFS scrub speed is insanely slow.
So I have a RN104, with about 10TB of disk space. When I set it to do a BTRFS scrub, the speed is horrific. I'm getting something like 30GB/hour of scrub speed. At the present rate, it would take ...
Replying to my own message, it's about 4GB/hour, not 30GB/hour. I let it run for roughly 3 days (~75 hours), and it finished a bit over 300 gb total.
The last one I did took about 30 hours - that was on an RN526 with 4x6TB installed. That was using 6.6.1 beta.
That seems like a roughly plausible speed for this to be.
So, given that i have half as much data as you do, but my scrub is projected to take roughly 2,000 hours, is it really plausible that the CPU in the RN104 is 2,000 / 15 ~ 130x slower than the one in the RN526? Doesn't seem right to me.
There's definitely a bug here.
Well one would need more info such as what services you are running, if you have any apps installed, disk SMART stats, logs zip from your system etc. before rushing to any judgments.
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