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Operating Systems Solaris Out of swap but RAM available Post 302445979 by JerryHone on Tuesday 17th of August 2010 09:36:48 AM
Old 08-17-2010
Out of swap but RAM available

Hi all,

The environment we're using is a T5440 running Solaris 10 LDOMs and zones configured within the LDOM. The LDOM has 32Gb of RAM and 32Gb of swap.
Last week, we had an issue where the MQ server on zone 3 crashed as it ran out of swap, apparently caused by zone 2 usage. I understand that RAM and swap are shared across the zones so that's understandable. The real issue appears to be that we're using up swap even though there is plenty of RAM still available. I'm not the SA, but I understand that there is no specific resource capping in place.
3 questions...
1) Has anyone come across this scenario before with swap being used, seemingly in preference to RAM!
2) What's the best way to determine what RAM and SWAP is being used by which processes, and can this be tracked dynamically? Would any tracking need to occur at the global level?
3) If we can determine a rogue process, can dtrace or similar be used to delve deeper?
 

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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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