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UNIX for Dummies Questions & Answers
Threshold for swap memory
Post 302609717 by vbe on Tuesday 20th of March 2012 10:48:28 AM
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1. Filesystems, Disks and Memory
I need to put a program together to determine the total, available memory and total and available swap on unix machines. I have been searching for weeks and I seem to run into dead ends. Every unix platform I look at has a different way to determine memory info.
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Hi,
Please help explain and answer the below:
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here is the output of swapinfo command
==> swapinfo
Kb Kb Kb PCT START/ Kb
TYPE AVAIL USED FREE USED LIMIT RESERVE PRI NAME
dev 8192000 0 8184000 0% 0 - 1 /dev/vg00/swap
reserve - 8184000 -8184000
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Hi team,
Is there any ability to force the system to use the swap memory for a specific service? And prevent another service of using the swap memory?
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Admins,
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If I understand your question correctly, you are asking for an explanation of Solaris memory manager. You'd better ask Oracle that question because you are talking about Solaris kernel internals.
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Hello Folks,
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LEARN ABOUT BSD
swapon
SWAPON(8) System Manager's Manual SWAPON(8) NAME
swapon - specify additional device for paging and swapping SYNOPSIS
swapon -a swapon name ... DESCRIPTION
Swapon is used to specify additional devices on which paging and swapping are to take place. The system begins by swapping and paging on only a single device so that only one disk is required at bootstrap time. Calls to swapon normally occur in the system multi-user initial- ization file /etc/rc making all swap devices available, so that the paging and swapping activity is interleaved across several devices. Normally, the -a argument is given, causing all devices marked as ``sw'' swap devices in /etc/fstab to be made available. The second form gives individual block devices as given in the system swap configuration table. The call makes only this space available to the system for swap allocation. SEE ALSO
swapon(2), init(8) FILES
/dev/[ru][pk]?b normal paging devices BUGS
There is no way to stop paging and swapping on a device. It is therefore not possible to make use of devices which may be dismounted dur- ing system operation. swapon is not implemented in 2.11BSD. 4th Berkeley Distribution November 17, 1996 SWAPON(8)