Probably more mlock (keep memory area in RAM), mincore just tells you what is or is not in RAM, and madvise is about access patterns.
You could MADV_WILLNEED the GC metadata when you start the GC process hoping they’ll have been paged in by the time you STW, but assuming that area is not massive it’s probably a better idea to just prevent it being paged out.
alt Hacker News
Probably more mlock (keep memory area in RAM), mincore just tells you what is or is not in RAM, and madvise is about access patterns.
You could MADV_WILLNEED the GC metadata when you start the GC process hoping they’ll have been paged in by the time you STW, but assuming that area is not massive it’s probably a better idea to just prevent it being paged out.