kern/166780: add sysctl for swap space used
Radim Kolar
hsn at sendmail.cz
Mon Apr 9 06:30:16 UTC 2012
>Number: 166780
>Category: kern
>Synopsis: add sysctl for swap space used
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Mon Apr 09 06:30:15 UTC 2012
>Closed-Date:
>Last-Modified:
>Originator: Radim Kolar
>Release: 8.2
>Organization:
FILEZ.com
>Environment:
>Description:
currently its impossible to query swap space used or available via sysctl and it must be done via kvm calls which are inaccessible for languages like Java.
currently sysctl returns only this.
vm.swap_reserved: 768651264 <-- free space on disk holding swapfile
vm.swap_total: 629145600 <-- swapfile total size
i propose to add variable like
vm.swap_count: <-- how many of vm.swap_total are currently in use
proposed sysctl name is similar to vm.stats.vm.v_* names.
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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