[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <200710181627.27827.nickpiggin@yahoo.com.au>
Date: Thu, 18 Oct 2007 16:27:27 +1000
From: Nick Piggin <nickpiggin@...oo.com.au>
To: Vasily Averin <vvs@...ru>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
linux-ext4@...r.kernel.org, devel@...nvz.org
Subject: Re: How Inactive may be much greather than cached?
Hi,
On Thursday 18 October 2007 16:24, Vasily Averin wrote:
> Hi all,
>
> could anybody explain how "inactive" may be much greater than "cached"?
> stress test (http://weather.ou.edu/~apw/projects/stress/) that writes into
> removed files in cycle puts the node to the following state:
>
> MemTotal: 16401648 kB
> MemFree: 636644 kB
> Buffers: 1122556 kB
> Cached: 362880 kB
> SwapCached: 700 kB
> Active: 1604180 kB
> Inactive: 13609828 kB
>
> At the first glance memory should be freed on file closing, nobody refers
> to file and ext3_delete_inode() truncates inode. We can see that memory is
> go away from "cached", however could somebody explain why it become
> "invalid" instead be freed? Who holds the references to these pages?
Buffers, swap cache, and anonymous.
-
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists