Usage

Use this report to identify delays resulting from waits during HFS requests. Each report line shows an HFS device, listed by device number, for which wait time was observed. If a wait was observed during a sample, where there was an inflight HFS request, but could not be attributed to a specific file and device, the wait is aggregated to a single report line with a device number of "unknown". You can further expand each line item to show the HFS files associated with the device.