[lkml]   [2005]   [Dec]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 02/12] mm: supporting variables and functions for balanced zone aging
Wu Fengguang <> wrote:
> The zone aging rates are currently imbalanced,

ZONE_DMA is out of whack. It shouldn't be, and I'm not aware of anyone
getting in and working out why. I certainly wouldn't want to go and add
all this stuff without having a good understanding of _why_ it's out of
whack. Perhaps it's just some silly bug, like the thing I pointed at in
the previous email.

> the gap can be as large as 3 times,

What's the testcase?

> which can severely damage read-ahead requests and shorten their
> effective life time.

Have you any performance numbers for this?
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2005-12-01 11:40    [W:0.103 / U:2.968 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site