I have a very large pool of 63 * 8TB disks across 7 raidz2 VDEVs. The server has 384GB RAM and 24 CPU cores.
When running scrub on this pool I see a very strange system load where the system is completely idle for about two hours, and then running at 100% capacity for about two hours, and then repeating this on/off cycle. See attached screenshot.
Is this normal system load for a scrub? Why is it doing this? Will adding *even more* memory help anything at all?
When the system load is at 100% the system is barely usable, can I use the "Resilver Priority" setting to avoid 100% system load during work hours?
When running scrub on this pool I see a very strange system load where the system is completely idle for about two hours, and then running at 100% capacity for about two hours, and then repeating this on/off cycle. See attached screenshot.
Is this normal system load for a scrub? Why is it doing this? Will adding *even more* memory help anything at all?
When the system load is at 100% the system is barely usable, can I use the "Resilver Priority" setting to avoid 100% system load during work hours?