Re: Flow ID, LACP, and igb

2013-08-30 Thread Alan Somers
On Thu, Aug 29, 2013 at 3:40 PM, T.C. Gubatayao wrote: > On Aug 29, 2013, at 4:21 PM, Alan Somers wrote: > >> They're faster, but even with this change, jenkins_hash is still 6 times >> slower than FNV hash. > > Actually, I think your test isn't accurately simulating memory access, which > might

Re: Flow ID, LACP, and igb

2013-08-30 Thread Luigi Rizzo
Alan, On Thu, Aug 29, 2013 at 6:45 PM, Alan Somers wrote: > > > ... > I pulled all four hash functions out into userland and microbenchmarked > them. The upshot is that hash32 and fnv_hash are the fastest, jenkins_hash > is slower, and siphash24 is the slowest. Also, Clang resulted in much > f