Hi everyone, while developing some tests for KSM in LTP - http://marc.info/?l=ltp-list&m=128754077917739&w=2 , noticed that pages_shared, pages_sharing and pages_unshared have different values than the expected values in the tests after read the doc. I am not sure if I misunderstood those values or there were bugs somewhere. There are 3 programs (A, B ,C) to allocate 128M memory each using KSM. A has memory content equal 'c'. B has memory content equal 'a'. C has memory content equal 'a'. Then (using the latest mmotm tree), pages_shared = 2 pages_sharing = 98292 pages_unshared = 0 Later, A has memory content = 'c' B has memory content = 'b' C has memory content = 'a'. Then, pages_shared = 4 pages_sharing = 98282 pages_unshared = 0 Finally, A has memory content = 'd' B has memory content = 'd' C has memory content = 'd' Then, pages_shared = 0 pages_sharing = 0 pages_unshared = 0 The following was the failed LTP output, # ./ksm01 ksm01 0 TINFO : KSM merging... ksm01 0 TINFO : child 0 allocates 128 MB filled with 'c'. ksm01 0 TINFO : child 1 allocates 128 MB filled with 'a'. ksm01 0 TINFO : child 2 allocates 128 MB filled with 'a'. ksm01 0 TINFO : check! ksm01 0 TINFO : run is 1. ksm01 0 TINFO : pages_shared is 2. ksm01 1 TFAIL : pages_shared is not 32768. ksm01 0 TINFO : pages_sharing is 98292. ksm01 2 TFAIL : pages_sharing is not 32768. ksm01 0 TINFO : pages_unshared is 0. ksm01 3 TFAIL : pages_unshared is not 32768. ksm01 0 TINFO : child 1 continues... ksm01 0 TINFO : child 1 changes memory content to 'b'. ksm01 0 TINFO : check! ksm01 0 TINFO : run is 1. ksm01 0 TINFO : pages_shared is 4. ksm01 4 TFAIL : pages_shared is not 0. ksm01 0 TINFO : pages_sharing is 98282. ksm01 5 TFAIL : pages_sharing is not 0. ksm01 0 TINFO : pages_unshared is 0. ksm01 6 TFAIL : pages_unshared is not 98304. ksm01 0 TINFO : child 0 continues... ksm01 0 TINFO : child 0 changes memory content to 'd'. ksm01 0 TINFO : child 1 continues... ksm01 0 TINFO : child 1 changes memory content to 'd' ksm01 0 TINFO : child 2 continues... ksm01 0 TINFO : child 2 changes memory content to 'd' ksm01 0 TINFO : check! ksm01 0 TINFO : run is 1. ksm01 0 TINFO : pages_shared is 0. ksm01 7 TFAIL : pages_shared is not 32768. ksm01 0 TINFO : pages_sharing is 0. ksm01 8 TFAIL : pages_sharing is not 65536. ksm01 0 TINFO : pages_unshared is 0. ksm01 0 TINFO : KSM unmerging... ksm01 0 TINFO : check! ksm01 0 TINFO : run is 2. ksm01 0 TINFO : pages_shared is 0. ksm01 0 TINFO : pages_sharing is 0. ksm01 0 TINFO : pages_unshared is 0. ksm01 0 TINFO : stop KSM. ksm01 0 TINFO : check! ksm01 0 TINFO : run is 0. ksm01 0 TINFO : pages_shared is 0. ksm01 0 TINFO : pages_sharing is 0. ksm01 0 TINFO : pages_unshared is 0. ksm01 9 TFAIL : ksmtest() failed with 1. CAI Qian -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>