On Thu, Apr 16, 2020 at 07:03:30PM -0700, Bernard Zhao wrote: > kmalloc_index inline function code size optimization and runtime > performance stability optimization. After optimization, the function > kmalloc_index is more stable, the size will never affecte the function`s > execution efficiency. > And follow test data shows that the performance of new optimization > exceeds the original algorithm when applying for more than 512 Bytes > (include 512B).And new optimization runtime is more stable than before. That's all very well and good, but the vast majority of allocations are less than 512 bytes in size! Your numbers show that on average, this patch makes the kernel slower! > size time/Per 100 million times > old fun new fun with optimise > 8 203777 241934 > 16 245611 409278 > 32 236384 408419 > 64 275499 447732 > 128 354909 416439 > 256 360472 406598 > 512 431072 409168 > 1024 463822 407401
