10-16-2018
Hi both (Jilliagre and Bakunin) and all,
Thank you so much for your advice and guidance. I can't see where i could have possibly understand more if not here.
Thanks for the link on the introduction to performance tuning and monitoring as well.
It seems like understanding the OS kernel and its working is slowly like a lost trade; people no longer care how it works, people just want things to work..
Thanks for staying around to keep the forum alive, we need you guys around..
=====================================================================
On a side note on ZFS ARC, i do realize it is sucking up RAM and its not reflected as freemem in neither vmstat or sar.
As mentioned my MadeInGermany, i do set a reserve hint -> this kinda set a upper limit on how much ZFS ARC can grow up to.
But how do i know if the amount of memory available and allocated to ZFS ARC is sufficient or not ?
Regards,
Noob
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zdb(8) System Administration Commands zdb(8)
NAME
zdb - ZFS debugger
SYNOPSIS
zdb pool
DESCRIPTION
The zdb command is used by support engineers to diagnose failures and gather statistics. Since the ZFS file system is always consistent on
disk and is self-repairing, zdb should only be run under the direction by a support engineer.
If no arguments are specified, zdb, performs basic consistency checks on the pool and associated datasets, and report any problems
detected.
Any options supported by this command are internal to Sun and subject to change at any time.
EXIT STATUS
The following exit values are returned:
0 The pool is consistent.
1 An error was detected.
2 Invalid command line options were specified.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|Availability |SUNWzfsu |
+-----------------------------+-----------------------------+
|Interface Stability |Unstable |
+-----------------------------+-----------------------------+
SEE ALSO
zfs(8), zpool(8), attributes(5)
SunOS 5.11 31 Oct 2005 zdb(8)