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Operating Systems Solaris Help on Understanding Swap Size Post 302541347 by vivek.goel.piet on Sunday 24th of July 2011 01:47:11 AM
Old 07-24-2011
Thanks for your reply dude,In my operations swap memory is used for processes to run..Moreover we dont have any RAM on our node..Swap memory is used instead of Node..The o/p given above is of a voucher server (IN system).
As per our ZLD,if
Code:
swap -s

command provides o/p of availabe space=used space,everything if fine...what does this mean?..
Quote:
Originally Posted by jlliagre
You should define what you expect swap to mean. As far as Solaris is concerned, this can be the on disk swap area, the whole virtual memory or a file system (a.k.a. tmpfs).

  • Your swap area size is 4 GB
  • Your total virtual memory size is around 10 GB, half of which been free. You have at least 6 GB of RAM but possibly much more.
  • The various file systems backed by swap are using a negligible part of virtual memory.
There is no straight relationship between how much swap is used and a system performance. If you want the latter, just make sure you have enough RAM to avoid pagination. If you want your applications not to crash, have enough swap for all memory allocation and reservations to easily fit. Memory allocations do like RAM, memory reservations are fine with on disk swap.

---------- Post updated at 22:59 ---------- Previous update was at 22:48 ----------


In the df output context, swap is a file system (a.k.a tmpfs) holding files about which sensible numbers are reported. However, you are correct df isn't the right command to investigate memory usage.
 

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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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