diff options
Diffstat (limited to 'pod')
| -rw-r--r-- | pod/perltodo.pod | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/pod/perltodo.pod b/pod/perltodo.pod index 771740e91a..e315cd3023 100644 --- a/pod/perltodo.pod +++ b/pod/perltodo.pod @@ -261,6 +261,19 @@ official release". There are lots of functions which are retained for binary compatibility. Clean these up. Move them to mathom.c, and don't compile for blead? +=head2 am I hot or not? + +The idea of F<pp_hot.c> is that it contains the I<hot> ops, the ops that are +most commonly used. The idea is that by grouping them, their object code will +be adjacent in the executable, so they have a greater chance of already being +in the CPU cache (or swapped in) due to being near another op already in use. + +Except that it's not clear if these really are the most commonly used ops. So +anyone feeling like exercising their skill with coverage and profiling tools +might want to determine what ops I<really> are the most commonly used. And in +turn suggest evictions and promotions to achieve a better F<pp_hot.c>. + + |