Change Details

Compiles, boots, passes simple tests. Passes a 4-hour test by Peter Holm. A performance test suggested by alc (adding write protection to all the even-numbered pages in a gigabyte when the odd-numbers pages have it, produces these results in 12 trials. Without this patch: time 0.23 time 0.25 time 0.23 time 0.22 time 0.23 time 0.25 time 0.23 time 0.23 time 0.24 time 0.23 time 0.23 time 0.22 With this patch: time 0.21 time 0.21 time 0.21 time 0.21 time 0.24 time 0.20 time 0.20 time 0.28 time 0.20 time 0.21 time 0.21 time 0.20 Then I ran 12 more, and none of them were more than 0.22. I've uploaded the test program that produced these results. {F4914298}

Compiles, boots, passes simple tests. Passes a 13-hour test by Peter Holm. A performance test suggested by alc (adding write protection to all the even-numbered pages in a gigabyte when the odd-numbers pages have it, produces these results in 12 trials. Without this patch: time 0.23 time 0.25 time 0.23 time 0.22 time 0.23 time 0.25 time 0.23 time 0.23 time 0.24 time 0.23 time 0.23 time 0.22 With this patch: time 0.21 time 0.21 time 0.21 time 0.21 time 0.24 time 0.20 time 0.20 time 0.28 time 0.20 time 0.21 time 0.21 time 0.20 Then I ran 12 more, and none of them were more than 0.22. I've uploaded the test program that produced these results. {F4914298}

Compiles, boots, passes simple tests. Passes a 413-hour test by Peter Holm. A performance test suggested by alc (adding write protection to all the even-numbered pages in a gigabyte when the odd-numbers pages have it, produces these results in 12 trials. Without this patch: time 0.23 time 0.25 time 0.23 time 0.22 time 0.23 time 0.25 time 0.23 time 0.23 time 0.24 time 0.23 time 0.23 time 0.22 With this patch: time 0.21 time 0.21 time 0.21 time 0.21 time 0.24 time 0.20 time 0.20 time 0.28 time 0.20 time 0.21 time 0.21 time 0.20 Then I ran 12 more, and none of them were more than 0.22. I've uploaded the test program that produced these results. {F4914298}