Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754690AbZCFCLz (ORCPT ); Thu, 5 Mar 2009 21:11:55 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752393AbZCFCLp (ORCPT ); Thu, 5 Mar 2009 21:11:45 -0500 Received: from fgwmail5.fujitsu.co.jp ([192.51.44.35]:36432 "EHLO fgwmail5.fujitsu.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752165AbZCFCLo (ORCPT ); Thu, 5 Mar 2009 21:11:44 -0500 From: KOSAKI Motohiro To: Larry Woodman Subject: Re: [Patch] mm tracepoints Cc: kosaki.motohiro@jp.fujitsu.com, linux-kernel@vger.kernel.org, mingo@elte.hu, rostedt@goodmis.org, peterz@infradead.org, fweisbec@gmail.com In-Reply-To: <1236291400.1476.50.camel@dhcp-100-19-198.bos.redhat.com> References: <1233306324.11332.11.camel@nigel-laptop> <1236291400.1476.50.camel@dhcp-100-19-198.bos.redhat.com> Message-Id: <20090306105627.3EF0.A69D9226@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Mailer: Becky! ver. 2.50 [ja] Date: Fri, 6 Mar 2009 11:11:39 +0900 (JST) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1600 Lines: 39 > I've implemented several mm tracepoints to track page allocation and > freeing, various types of pagefaults and unmaps, and critical page > reclamation routines. This is useful for debugging memory allocation > issues and system performance problems under heavy memory loads: > > # tracer: mm > # > # TASK-PID CPU# TIMESTAMP FUNCTION > # | | | | | > pdflush-624 [004] 184.293169: wb_kupdate: > (mm_pdflush_kupdate) count=3e48 > pdflush-624 [004] 184.293439: get_page_from_freelist: > (mm_page_allocation) pfn=447c27 zone_free=1940910 > events/6-33 [006] 184.962879: free_hot_cold_page: > (mm_page_free) pfn=44bba9 > irqbalance-8313 [001] 188.042951: unmap_vmas: > (mm_anon_userfree) mm=ffff88044a7300c0 address=7f9a2eb70000 pfn=24c29a > cat-9122 [005] 191.141173: filemap_fault: > (mm_filemap_fault) primary fault: mm=ffff88024c9d8f40 address=3cea2dd000 > pfn=44d68e > cat-9122 [001] 191.143036: handle_mm_fault: > (mm_anon_fault) mm=ffff88024c8beb40 address=7fffbde99f94 pfn=24ce22 > ... Hi Larry, I've started to evaluate your patch. firstly, this patch can't apply tip/master. secondly, I don't think the address of mm_struct and pfn help to analysis. administrator don't know the page is which file's cache. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/