From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from max.fys.ruu.nl (max.fys.ruu.nl [131.211.32.73]) by kvack.org (8.8.7/8.8.7) with ESMTP id IAA16151 for ; Thu, 20 Nov 1997 08:14:28 -0500 Date: Thu, 20 Nov 1997 10:00:52 +0100 (MET) From: Rik van Riel Subject: Re: vhand-2.1.64... problems solved - but not all ;) In-Reply-To: <64vsjf$aq@pccross.average.org> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org To: Eugene Crosser Cc: linux-kernel , linux-mm List-ID: On 19 Nov 1997, Eugene Crosser wrote: > just to let you know. For me, all 2.1.xx kernels are hanging trying > to allocate TCP buffers (I reported this problem), and I tried vhand > patch in the hope that it may help, as it deals with memory management. It's still in beta :) > > Unfortunately, it did not. I got the system hung with the same > symptoms in less then 24 hours uptime. Also, perfomance of cpu > intensive applications (mpg123) dropped noticably with vhand. I'm working on that one, and it seems like Joe Fouch has given me the 'golden hint' on what to do. So I implemented his idea and tested... It improved performance in CPU intensive applications, but I/O intensive stuff really suffers. In vhand-2.1.66 this should be better... > > I have a 120MHz 486dx4 w/16Mb, kernel 2.1.63+vhand-2.1.63. > > BTW, Zlatko's patch seemed to cure the hang problem, but after a few > days, the system freezed anyway at the same place. Hmmm, could you give me some more details: - type of network card - amount of network-buffers allocated each second (!) - size of allocated network buffers - amount of swapping/paging going on - how was the CPU usage of kswapd/vhand during that time? thanks and good luck, Rik. ---------- Send Linux memory-management wishes to me: I'm currently looking for something to hack...