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SubjectRe: Linux 2.4.4-ac17
Date
Dear Mike ,

Are you using harddisk ?

Jaswinder.

----- Original Message -----
From: "Mike Galbraith" <mikeg@wen-online.de>
To: "Jaswinder Singh" <jaswinder.singh@3disystems.com>
Cc: "Alan Cox" <laughing@shared-source.org>; <linux-kernel@vger.kernel.org>
Sent: Friday, May 25, 2001 2:06 AM
Subject: Re: Linux 2.4.4-ac17


> On Thu, 24 May 2001, Jaswinder Singh wrote:
>
> > Dear Mike ,
> >
> > >
> > > This one I tested with memleak. It wasn't a leak, it was dcache
> > > growth. Under vm stress, it shrank down fine.
> > >
> >
> > It will depends upon lot of thing :-
> > 1.What is your size of ramfs ,
> unlimited.
> > 2. Are you using any harddisk ,
> (?? ramfs) I think I misunderstand.
> > 3. How many many files are you creating ,
> lots of different names. (like you were)
> > 4. How frequently you are making files .
> as fast as a C proglet could create/maybe(random)access/destroy them.
> > 5. What are the size of your files ?
> varying from empty to small.
> >
> > In my case , my ramfs is of 14 MB , using no hard-disk , i am
continously
> > making and deleting files of 4 K size , my Machine hangs within 5
minutes ,
> > by saying no memory left.
>
> I can write random 4k files as fast and long as I like (with swap off)
> and if I flush out the rather large dcache...
>
> procs memory swap io system
cpu
> r b w swpd free buff cache si so bi bo in cs us
sy id
> 2 0 1 0 17600 104 4456 0 0 197 4 118 41 6
83 11
> 1 0 0 0 14888 124 4476 0 0 31 0 123 37 13
87 0
> 1 0 0 0 12252 124 4476 0 0 0 0 103 9 11
89 0
> 1 0 0 0 9632 124 4476 0 0 0 0 105 7 17
83 0
> 1 0 0 0 7032 124 4480 0 0 0 0 103 10 11
89 0
> 1 0 0 0 4460 124 4476 0 0 0 0 101 10 12
88 0
> 1 0 1 0 20272 128 4480 0 0 1 2 116 16 23
77 0
> 1 0 0 0 17860 128 4480 0 0 0 15 115 10 17
83 0
> 1 0 0 0 15196 128 4476 0 0 0 0 110 7 15
85 0
> dentry_cache 747962 747990 128 24933 24933 1
> dentry_cache 769651 769680 128 25656 25656 1
> dentry_cache 792664 792690 128 26423 26423 1
> dentry_cache 814779 814800 128 27160 27160 1
> dentry_cache 835972 835980 128 27866 27866 1
> dentry_cache 715148 715170 128 23839 23839 1
>
> ...afterward, I don't see leakage. Only a short test this time, but
> long enough to eat all of my ram many times over if it leaked as fast
> as your description indicates. I can't reproduce it. (2.4.4 btw)
>
> > Please tell me about your system and what you are doing on it ?
>
> Generic 128mb PIII/500. What I was doing on it was beating up ramfs
> looking for the leak you reported :)
>
> -Mike
>
>

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