lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Thu, 18 Oct 2007 11:14:05 +0400
From:	Vasily Averin <vvs@...ru>
To:	Nick Piggin <nickpiggin@...oo.com.au>
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?

Nick Piggin wrote:
> 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.

But buffers and swap cache are low (1.1 Gb and 700kB in this example) and
anonymous should go away when process finished.



-
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