Bob Friesenhahn wrote:
It seems like this Nagios script is not very useful since the notion of
free memory has become antiquated.
Not true. The script is simply not intelligent enough. There are really
3 broad kinds of RAM usage:
A) Unused
B) Unfreeable by the kernel (normal process
On Wed, May 6, 2009 at 10:17 PM, Richard Elling
richard.ell...@gmail.com wrote:
Fajar A. Nugraha wrote:
IMHO it's probably best to set a limit on ARC size and treat it like
any other memory used by applications.
There are a few cases where this makes sense, but not many. The ARC
will
Fajar A. Nugraha wrote:
On Wed, May 6, 2009 at 10:17 PM, Richard Elling
richard.ell...@gmail.com wrote:
Fajar A. Nugraha wrote:
IMHO it's probably best to set a limit on ARC size and treat it like
any other memory used by applications.
There are a few cases where this
Carson Gaspar wrote:
Not true. The script is simply not intelligent enough. There are really
3 broad kinds of RAM usage:
A) Unused
B) Unfreeable by the kernel (normal process memory)
C) Freeable by the kernel (buffer cache, ARC, etc.)
Monitoring usually should focus on keeping (A+C)
On Thu, 7 May 2009, Moore, Joe wrote:
Carson Gaspar wrote:
Not true. The script is simply not intelligent enough. There are really
3 broad kinds of RAM usage:
A) Unused
B) Unfreeable by the kernel (normal process memory)
C) Freeable by the kernel (buffer cache, ARC, etc.)
Monitoring usually
Hi,
Please forgive me if my searching-fu has failed me in this case, but
I've been unable to find any information on how people are going about
monitoring and alerting regarding memory usage on Solaris hosts using
ZFS.
The problem is not that the ZFS ARC is using up the memory, but that the
On Wed, May 6, 2009 at 1:08 PM, Troy Nancarrow (MEL)
troy.nancar...@foxtel.com.au wrote:
So how are others monitoring memory usage on ZFS servers?
I think you can get the amount of memory zfs arc uses with arcstat.pl.
http://www.solarisinternals.com/wiki/index.php/Arcstat
IMHO it's probably
Troy Nancarrow (MEL) schrieb:
Hi,
Please forgive me if my searching-fu has failed me in this case, but
I've been unable to find any information on how people are going about
monitoring and alerting regarding memory usage on Solaris hosts using ZFS.
The problem is not that the ZFS ARC is
Fajar A. Nugraha wrote:
On Wed, May 6, 2009 at 1:08 PM, Troy Nancarrow (MEL)
troy.nancar...@foxtel.com.au wrote:
So how are others monitoring memory usage on ZFS servers?
I think you can get the amount of memory zfs arc uses with arcstat.pl.
On Wed, 6 May 2009, Troy Nancarrow (MEL) wrote:
Please forgive me if my searching-fu has failed me in this case, but
I've been unable to find any information on how people are going about
monitoring and alerting regarding memory usage on Solaris hosts using
ZFS.
The problem is not that the ZFS
Bob Friesenhahn wrote:
On Wed, 6 May 2009, Troy Nancarrow (MEL) wrote:
Please forgive me if my searching-fu has failed me in this case, but
I've been unable to find any information on how people are going about
monitoring and alerting regarding memory usage on Solaris hosts using
ZFS.
The
On Wed, 6 May 2009, Richard Elling wrote:
Memory is meant to be used. 96% RAM use is good since it represents an
effective use of your investment.
Actually, I think a percentage of RAM is a bogus metric to measure.
For example, on a 2TBytes system, you would be wasting 80 GBytes.
Perhaps
Ben Rockwood's written a very useful util called arc_summary:
http://www.cuddletech.com/blog/pivot/entry.php?id=979
It's really good for looking at ARC usage (including memory usage).
You might be able to make some guesses based on kstat -n zfs_file_data
and kstat -n zfs_file_data_buf. Look for
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