Bug #9082
Add ZFS performance test targeting ZIL latency
| Status: | Closed | Start date: | 2018-02-08 | |
|---|---|---|---|---|
| Priority: | Normal | Due date: | ||
| Assignee: |  John Kennedy | % Done: | 100% | |
| 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
History
#1
Updated by Electric Monk about 2 months ago
- % Done changed from 0 to 100
- Status changed from New to Closed
git commit c373aa8be7dba4bca17e8db696f27412617604b9
commit c373aa8be7dba4bca17e8db696f27412617604b9
Author: John Wren Kennedy <john.kennedy@delphix.com>
Date: 2018-06-18T17:32:39.000Z
9082 Add ZFS performance test targeting ZIL latency
Reviewed by: Dan Kimmel <dan.kimmel@delphix.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed by: Tony Nguyen <tony.nguyen@delphix.com>
Approved by: Matt Ahrens <mahrens@delphix.com>
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