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Full Discussion: Memory & Swap utilization
Top Forums UNIX for Dummies Questions & Answers Memory & Swap utilization Post 302911422 by MadeInGermany on Thursday 31st of July 2014 02:06:52 PM
Old 07-31-2014
Preventative measures:
If you have not yet done so, limit ZFS ARC cache to RAM/4 in /etc/system:
Code:
set zfs:zfs_arc_max = 8192000000

Also watch /tmp; have a cleanup routine, and limit it to RAM/3 in /etc/vfstab:
Code:
swap    -       /tmp    tmpfs   -       yes     size=10240m

--
Separate measurement of RAM and swap can be done for statistics - but rarely for alert thresholds.
Instead you should measure the virtual memory, as given by "vmstat" or "swap -s". It is roughly the sum of RAM and swap.
 

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Glib::Flags(3)						User Contributed Perl Documentation					    Glib::Flags(3)

NAME
Glib::Flags DESCRIPTION
Glib maps flag and enum values to the nicknames strings provided by the underlying C libraries. Representing flags this way in Perl is an interesting problem, which Glib solves by using some cool overloaded operators. The functions described here actually do the work of those overloaded operators. See the description of the flags operators in the "This Is Now That" section of Glib for more info. HIERARCHY
Glib::Flags METHODS
scalar = $class->new ($a) o $a (scalar) Create a new flags object with given bits. This is for use from a subclass, it's not possible to create a "Glib::Flags" object as such. For example, my $f1 = Glib::ParamFlags->new ('readable'); my $f2 = Glib::ParamFlags->new (['readable','writable']); An object like this can then be used with the overloaded operators. scalar = $a->all ($b, $swap) o $b (scalar) o $swap (scalar) ref = $a->as_arrayref integer = $a->bool ($b, $swap) o $b (scalar) o $swap (integer) integer = $a->eq ($b, $swap) o $b (scalar) o $swap (integer) integer = $a->ge ($b, $swap) o $b (scalar) o $swap (integer) scalar = $a->intersect ($b, $swap) o $b (scalar) o $swap (scalar) integer = $a->ne ($b, $swap) o $b (scalar) o $swap (integer) scalar = $a->sub ($b, $swap) o $b (scalar) o $swap (scalar) scalar = $a->union ($b, $swap) o $b (scalar) o $swap (scalar) scalar = $a->xor ($b, $swap) o $b (scalar) o $swap (scalar) SEE ALSO
Glib COPYRIGHT
Copyright (C) 2003-2009 by the gtk2-perl team. This software is licensed under the LGPL. See Glib for a full notice. perl v5.12.1 2010-07-05 Glib::Flags(3)
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