Bug #9082
Add ZFS performance test targeting ZIL latency
| Status: | New | Start date: | 2018-02-08 | |
|---|---|---|---|---|
| Priority: | Normal | Due date: | ||
| Assignee: |  John Kennedy | % Done: | 0% | |
| Category: | - | |||
| Target version: | - | |||
| Difficulty: | Medium | Tags: | needs-triage |
Description
Work by Prakash Surya.
This adds a new test to measure ZIL performance.
- A new DTrace collection script to measure latency, and another to collect stacks of threads scheduled off a cpu for creation of flamegraphs.
- Enhances the io.d collection script to produce histograms
- Adds the ability to induce IO delays with zinject
- Adds a new variable (PERF_NTHREADS_PER_FS) to allow fio threads to be distributed to individual file systems as opposed to all IO going to one, as happens elsewhere.
- Refactoring of do_fio_run
Also available in: Atom