Bug #9082
Add ZFS performance test targeting ZIL latency
Start date:
2018-02-08
Due date:
% Done:
100%
Estimated time:
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
Updated by Electric Monk about 1 year ago
Updated by - % 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>