zfs-stats's Introduction

zfs-stats

ZFS statistics tool for FreeBSD.

The zfs-stats script displays general ZFS information and human-readable statistics for the following subsystems:

ARC
L2ARC
DMU (zfetch)
vdev cache.

Help: zfs-stats -h

In the ports tree: sysutils/zfs-stats

Homepage: https://www.vx.sk/zfs-stats/

This script is a fork of arc_summary.pl by Jason Hellenthal.

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zfs-stats's Issues

Outdated value in ZFS

Hi,

I new FreeBSD and ZFS is missing value "kstat.zfs.misc.arcstats.recycle_miss".

sysctl -a kstat.zfs.misc.arcstats.recycle_miss
sysctl: unknown oid 'kstat.zfs.misc.arcstats.recycle_miss'

I check it on:

12.1
12.0
11.1

Your script through it have error:

ARC Misc:
	Deleted:				2381299
Use of uninitialized value in printf at ./zfs-stats line 337.
	Recycle Misses:				
	Mutex Misses:				1009
	Evict Skips:				0

Workaround is remove or comment line: 333 and 337.

Could you update your script?

Line 717: error with OpenZFS on FreeBSD 13

Appears related to how the ZFS version is now reported. This is on FreeBSD 13.0-BETA3.

david@t480 0 [0] ~
07:42:47 $ zfs-stats -a > zfs-stats-freebsd
Argument "[fastest] scalar superscalar superscalar4 sse2 ssse3 avx..." isn't numeric in printf at /usr/local/bin/zfs-stats line 717.
Argument "2.0.0-FreeBSD_gf11b09dec" isn't numeric in printf at /usr/local/bin/zfs-stats line 717.
Argument "wait" isn't numeric in printf at /usr/local/bin/zfs-stats line 717.

Is the value used for "Logical Total" correct?

Currently the variable used to display "Logical Total" is mem_total = mem_hw which is the estimated physical memory. However, from the definition of logical, I had the impression that it would mean the memory available to the OS. If so, shouldn't mem_all or mem_phys be more suitable?

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