From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sun, 15 Sep 2002 10:23:24 -0700 (PDT) From: "M. Edward (Ed) Borasky" Subject: Re: [PATCH] add vmalloc stats to meminfo In-Reply-To: <20020915071157.GH3530@holomorphy.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: William Lee Irwin III Cc: Andrew Morton , Dave Hansen , "Martin J. Bligh" , linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: On Sun, 15 Sep 2002, William Lee Irwin III wrote: > Dave Hansen wrote: > >> It is often hard to tell > >> whether this is because the area is too small, or just too fragmented. This > LDT's were formerly allocated in vmallocspace. This presented difficulties > with many simultaneous threaded applications. Also, given that there is > zero vmallocspace OOM recovery now present in the kernel some method of > monitoring this aspect of system behavior up until the point of failure is > useful for detecting further problem areas (LDT's were addressed by using > non-vmalloc allocations). > > Also, dynamic vmalloc allocations may very well be starved by boot-time > allocations on systems where much vmallocspace is required for IO memory. > The failure mode of such is effectively deadlock, since they block > indefinitely waiting for permanent boot-time allocations to be freed up. Thank you!! How difficult would it be to back-port this to 2.4.18? -- Take Your Trading to the Next Level! M. Edward Borasky, Meta-Trading Coach znmeb@borasky-research.net http://www.borasky-research.net/Meta-Trading-Coach.htm http://groups.yahoo.com/group/meta-trading-coach ransacked: participated in a sack race. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/