• Raymond Hettinger's avatar
    Restore the data block size to 62. · 77578204
    Raymond Hettinger yazdı
    The former block size traded away good fit within cache lines in
    order to gain faster division in deque_item().  However, compilers
    are getting smarter and can now replace the slow division operation
    with a fast integer multiply and right shift.  Accordingly, it makes
    sense to go back to a size that lets blocks neatly fill entire
    cache-lines.
    
    GCC-4.8 and CLANG 4.0 both compute "x // 62" with something
    roughly equivalent to "x * 9520900167075897609 >> 69".
    77578204
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