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Bug #9082

Add ZFS performance test targeting ZIL latency

Added by John Kennedy over 1 year ago. Updated about 1 year ago.

Status:
Closed
Priority:
Normal
Assignee:
Category:
-
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

#1

Updated by Electric Monk about 1 year 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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