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Date:      Sun, 01 Dec 1996 22:24:00 -0800
From:      David Greenman <dg@root.com>
To:        Julian Assange <proff@suburbia.net>
Cc:        hackers@freebsd.org
Subject:   Re: multiple swap paritions 
Message-ID:  <199612020624.WAA05239@root.com>
In-Reply-To: Your message of "Mon, 02 Dec 1996 17:13:00 %2B1100." <199612020613.RAA16253@suburbia.net> 

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>root@evil:~# swapinfo
>Device      512-blocks     Used    Avail Capacity  Type
>/dev/wd0s1b     124800    22496   102176    18%    Interleaved
>/dev/wd2s1b      65536    22280    43128    34%    Interleaved
>/dev/wd3s1b      65536    22304    43104    34%    Interleaved
>/dev/sd0s1b      65536    21952    43456    34%    Interleaved
>Total           320896    89032   231864    28%
>
>Notice that capacity is spread equally over all swap-paritions
>despite differences in raw speed and drive-load (which you can't
>see, but trust me, there is). Can the swap-block locater be made
>adaptive, or does it rely on a uniform (and static) m/n distribution?

   It's a function of the way that the interleaved allocation works. So the
answer is no, it does not change as a function of the drive-load.

-DG

David Greenman
Core-team/Principal Architect, The FreeBSD Project



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