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Bug #3641

want a histogram of compressed block sizes

Added by Christopher Siden over 6 years ago. Updated over 6 years ago.

Status:
Closed
Priority:
Normal
Category:
zfs - Zettabyte File System
Start date:
2013-03-21
Due date:
% Done:

100%

Estimated time:
Difficulty:
Medium
Tags:
needs-triage

Description

From Matt Ahrens's original bug report at Delphix. It describes our main use case, but the functionality could be more generally useful for inspecting pools.

zdb should be able to output a histogram of compressed block sizes.  We will
run this on a customer system and use the results to create blocks of
representative sizes when aging a pool for performance testing.

History

#1

Updated by Christopher Siden over 6 years ago

  • Status changed from In Progress to Closed
commit 490d05b
Author: Matthew Ahrens <mahrens@delphix.com>
Date:   Sun Mar 24 14:24:51 2013

    3641 want a histogram of compressed block sizes
    Reviewed by: George Wilson <gwilson@zfsmail.com>
    Reviewed by: Christopher Siden <christopher.siden@delphix.com>
    Approved by: Eric Schrock <eric.schrock@delphix.com>

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