I think that mostly, your benchmarks have to match your workloads. Most of the CRC32 benchmarks I&#x27;ve seen are looking at larger buffers. The xxhash function mentioned elsewhere in this thread was claimed to be &quot;an order of magnitude&quot; faster, but again, large buffers - the gain over CRC32 on the same tests were rather more modest (though not at all insignificant).<p>In this case, I think (but am curious, will investigate further at some point) our Cyrus servers are doing enough checksumming work to keep any tables hot in the cache. So the tests are hopefully a useful indicator of where improvements can be made.