• Darius Mercadier's avatar
    Add FLAG_trace_gc_freelists and _verbose version · f4ebc674
    Darius Mercadier authored
    With this flag enabled, some statistics about the oldspace's freelists
    (and free/used spaced in general) are printed before and after each
    major garbage collection.
    
    It is useful to get some intuition about fragmentation and debug
    freelists. (This flag helped me track down the issues fixed by CLs
    1647162 and 1648476)
    
    Additionally, the verbose version (FLAG_trace_gc_freelists_verbose)
    prints the freelists of each page of old_space.
    
    Bug: v8:9329
    Change-Id: Ifa80426bf9d97ac9950459154507a585b039326d
    Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1655302
    Commit-Queue: Darius Mercadier <dmercadier@google.com>
    Reviewed-by: 's avatarUlan Degenbaev <ulan@chromium.org>
    Cr-Commit-Position: refs/heads/master@{#62150}
    f4ebc674
gc-tracer.cc 51 KB