>> [ ... ] Currently the write speed is not as good as i would >> like - especially for random 8k-16k I/O. [ ... ] > [ ... ] So this 60TB is then 20 4TB disks or so and the 4x 1GB > cache is simply not very helpful I think. The working set > doesn't fit in it I guess. If there is mostly single or a few > users of the fs, a single pcie based bcacheing 4 devices can > work, but for SATA SSD, I would use 1 SSD per HWraid5. [ ... ] Probably the idea of the cacheable working set of a random small write workload is a major new scientific discovery. :-) -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
