Comment on An Overview of Kernel Lock Improvements [pdf]Comments−yxhuvud12yIt would be interesting to see the same benchmarks for more normal amounts of cores. Most system does not have 240 cores, after all..−ck212yYou can get 20core/40thread servers for $400/mo these days:http://www.ovh.com/us/dedicated-servers/enterprise/2014-MG-2...or 16core/32thread for $270http://www.ovh.com/us/dedicated-servers/enterprise/2014-MG-1...So double socket performance drop is a realistic concern.−readerrrr12yThe latest Intel hi-end desktop cpu has 8 cores. With hyper-threading; which makes 16 threads.I think in the next 10 years we will reach a number that is close.−MaxBarraclough12yIf you count Xeon Phi, Intel are already up to 61.http://ark.intel.com/products/family/71840/Intel-Xeon-Phi-Co...−davidlohr12yMost of these optimizations imply scaling by number of cores. Thus the more cores (and thus sockets/NUMA nodes), the more the benefit. Desktop-ish systems with ~4 cores don't see much gain, but nor did we introduce performance degradations.
Comments
It would be interesting to see the same benchmarks for more normal amounts of cores. Most system does not have 240 cores, after all..
You can get 20core/40thread servers for $400/mo these days:
http://www.ovh.com/us/dedicated-servers/enterprise/2014-MG-2...
or 16core/32thread for $270
http://www.ovh.com/us/dedicated-servers/enterprise/2014-MG-1...
So double socket performance drop is a realistic concern.
The latest Intel hi-end desktop cpu has 8 cores. With hyper-threading; which makes 16 threads.
I think in the next 10 years we will reach a number that is close.
If you count Xeon Phi, Intel are already up to 61.
http://ark.intel.com/products/family/71840/Intel-Xeon-Phi-Co...
Most of these optimizations imply scaling by number of cores. Thus the more cores (and thus sockets/NUMA nodes), the more the benefit. Desktop-ish systems with ~4 cores don't see much gain, but nor did we introduce performance degradations.