While the connection is active, the disk counters will report the names of the underlying resources. Current Disk Queue Length 6. Enable/disable disk performance counters - TechGenix Use Performance Counter Sets and PowerShell to Ease … Figure 1. We say that because, if a disk is full, you are probably in an emergency situation trying to resolve that situation. performance [PATCH v3 00/27] btrfs zoned block device support There are two groups of performance counters when it comes to your hard drives; physical disk or logical disk. Physical Disk reports on information about the physical hard drive or drives. Logical Disk reports on the individual partitions, like the C: or D: drives. Physical Disk reports on … This is read latency. lore.kernel.org