> 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 A kernel profile might help. M. > -------------- > > 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: <a href=mailto:"aart@kvack.org";> aart@kvack.org </a> > > -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
