Re: broken VM in 2.4.10-pre9

[Olaf Zaplinski <o.zaplinski@mediascape.de>]

Linus Torvalds wrote:
> [...]
> What do you want to happen? You want to have an interface like
> 
>         echo 0 > /proc/bugs/mm
> 
> that makes mm bugs go away?

Good idea! ;-)

Well, I had similar problems and went back to 2.2.19... but isn't there a
tuneable yet?

On http://www.badtux.org/eric/editorial/mindcraft.html I found this one:

'Tuning the file buffer size so that more than 60% of memory can be used
(90% in this example) can be accomplished by issuing the following command:
echo "2 10 90" >/proc/sys/vm/buffermem"
This is documented in the file /usr/src/linux/Documentation/sysctl/vm.txt
along with many other tuning parameters, such as the 'bdflush' parameter.'


But vm.txt from 2.4.9ac10 and 2.2.19 says:

buffermem:

The three values in this file correspond to the values in
the struct buffer_mem. It controls how much memory should
be used for buffer memory. The percentage is calculated
as a percentage of total system memory.

The values are:
min_percent     -- this is the minimum percentage of memory
                   that should be spent on buffer memory
borrow_percent  -- UNUSED
max_percent     -- UNUSED

Is vm.txt out of date, or is there really no tuneable, neither in 2.2.x nor
in 2.4.x?

Olaf