Indenbaum alexander.indenb...@gmail.com
Subject: Re: Kernel memory management problem
To: guy keren c...@actcom.co.il
Cc: linux-il. linux-il@cs.huji.ac.il
Date: Monday, March 2, 2009, 4:24 PM
On Mon, Mar 2, 2009 at 1:16 PM, guy keren
c...@actcom.co.il wrote:
if you don't care about the speed
Guys/Girls/Dudes,
I'm working with embedded Linux box powered by 2.4 kernel ( I know :)
we are in process of switching to 2.6 ) with 1G physical memory, no
swap defined and some slow flash storage mounted.
We noticed that if we copy large media file ( 1.4G ) to flash storage
filesystem, using
if you don't care about the speed of copying the data and of slowing
down the disk media consderably during this copying, try to change the
copy program, so it will use the O_DIRECT flag when opening the file
(and then you'll need to make sure the buffers you pass to write() are
aligned to
--- On Mon, 3/2/09, Alexander Indenbaum alexander.indenb...@gmail.com wrote:
We noticed that if we copy large media file ( 1.4G ) to
flash storage
filesystem, using wget/sftp/whatever kernel grabs almost
all the
available physical memory and buffers are not released
even after
Valery,
See answer inline.
On Mon, Mar 2, 2009 at 1:11 PM, Valery Reznic valery_rez...@yahoo.com wrote:
--- On Mon, 3/2/09, Alexander Indenbaum alexander.indenb...@gmail.com wrote:
We noticed that if we copy large media file ( 1.4G ) to
flash storage
filesystem, using wget/sftp/whatever
On Mon, Mar 2, 2009 at 1:16 PM, guy keren c...@actcom.co.il wrote:
if you don't care about the speed of copying the data and of slowing down
the disk media consderably during this copying, try to change the copy
program, so it will use the O_DIRECT flag when opening the file (and then
you'll
--- On Mon, 3/2/09, Alexander Indenbaum alexander.indenb...@gmail.com wrote:
From: Alexander Indenbaum alexander.indenb...@gmail.com
Subject: Re: Kernel memory management problem
To: guy keren c...@actcom.co.il
Cc: linux-il. linux-il@cs.huji.ac.il
Date: Monday, March 2, 2009, 4:24 PM
On Mon, Mar 2, 2009 at 4:35 PM, Valery Reznic valery_rez...@yahoo.com wrote:
Unfortunately this is real problem: if you do something
like
while(true) { transfer } then application crashes and burns
in hell :)
Are you sure that culprit is kernel ?
May be transfer part has memory leak ?
Did
On Mon, Mar 2, 2009 at 4:44 PM, Valery Reznic valery_rez...@yahoo.com wrote:
--- On Mon, 3/2/09, Alexander Indenbaum alexander.indenb...@gmail.com wrote:
From: Alexander Indenbaum alexander.indenb...@gmail.com
Subject: Re: Kernel memory management problem
To: guy keren c...@actcom.co.il
Cc
Unfortunately this is real problem: if you do something
like
while(true) { transfer } then application crashes and burns
in hell :)
Are you sure that culprit is kernel ?
May be transfer part has memory leak ?
Did you try to run it under valgrind ?
or run top ?
Nondeterministically -
On Mon, Mar 2, 2009 at 5:00 PM, Valery Reznic valery_rez...@yahoo.com wrote:
--- On Mon, 3/2/09, Alexander Indenbaum alexander.indenb...@gmail.com wrote:
From: Alexander Indenbaum alexander.indenb...@gmail.com
Subject: Re: Kernel memory management problem
To: valery_rez...@yahoo.com
Cc
--- On Mon, 3/2/09, Alexander Indenbaum alexander.indenb...@gmail.com wrote:
From: Alexander Indenbaum alexander.indenb...@gmail.com
Subject: Re: Kernel memory management problem
To: valery_rez...@yahoo.com
Cc: linux-il. linux-il@cs.huji.ac.il
Date: Monday, March 2, 2009, 4:45 PM
On Mon
Alexander Indenbaum wrote:
On Mon, Mar 2, 2009 at 4:44 PM, Valery Reznic valery_rez...@yahoo.com wrote:
--- On Mon, 3/2/09, Alexander Indenbaum alexander.indenb...@gmail.com wrote:
From: Alexander Indenbaum alexander.indenb...@gmail.com
Subject: Re: Kernel memory management problem
To: guy
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