From: Marcelo Tosatti <marcelo.tosatti@cyclades.com>
To: linux-mm@kvack.org, akpm@osdl.org
Subject: Documentation/vm/balance really outdated
Date: Wed, 25 Aug 2004 15:45:20 -0300 [thread overview]
Message-ID: <20040825184520.GA23878@logos.cnet> (raw)
Hi guys,
The file Documentation/vm/balance was written by Kanoj in 2000, and is completly outdated
to what we have now.
Last paragraph:
pages_min/pages_low/pages_high/low_on_memory/zone_wake_kswapd: These are
per-zone fields, used to determine when a zone needs to be balanced. When
the number of pages falls below pages_min, the hysteric field low_on_memory
gets set. This stays set till the number of free pages becomes pages_high.
When low_on_memory is set, page allocation requests will try to free some
pages in the zone (providing GFP_WAIT is set in the request). Orthogonal
to this, is the decision to poke kswapd to free some zone pages. That
decision is not hysteresis based, and is done when the number of free
pages is below pages_low; in which case zone_wake_kswapd is also set.
Should we just remove it?
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next reply other threads:[~2004-08-25 18:45 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-25 18:45 Marcelo Tosatti [this message]
2004-08-25 20:46 ` Kanoj Sarcar
2004-08-25 20:54 ` William Lee Irwin III
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