From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <40363778.20900@movaris.com> Date: Fri, 20 Feb 2004 08:36:08 -0800 From: Kirk True MIME-Version: 1.0 Subject: LTP VM test slower under 2.6.3 than 2.4.20 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: kernelnewbies , Linux-MM@kvack.org List-ID: Hi all, Executing the LTP "mem01" VM test shows a huge time discrepancy between 2.4.20 and 2.6.3. Under 2.4.20 the total time is around 5 seconds, while under 2.6.3 the system seems to hang for nearly a minute. Where in particular should I start to look to see if it's a configuration/environment issue or a real problem? What other information would be helpful to know? Thanks greatly!!! Kirk -------------- 2.6.3: # time /tmp/ltp-full-20040206/testcases/kernel/mem/mem/mem01 Free Mem: 749 Mb Free Swap: 1992 Mb Total Free: 2741 Mb Total Tested: 1024 Mb mem01 0 INFO : touching 1024MB of malloc'ed memory (linear) mem01 1 PASS : malloc - alloc of 1024MB succeeded real 0m53.134s user 0m0.066s sys 0m3.292s 2.4.20: # time /tmp/ltp-full-20040206/testcases/kernel/mem/mem/mem01 Free Mem: 859 Mb Free Swap: 1992 Mb Total Free: 2852 Mb Total Tested: 1024 Mb mem01 0 INFO : touching 1024MB of malloc'ed memory (linear) mem01 1 PASS : malloc - alloc of 1024MB succeeded real 0m5.493s user 0m0.090s sys 0m1.260s -- 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/ . Don't email: aart@kvack.org