On 01/08/2013 12:05 PM, Doug Lea wrote: > 1. Uniformly faster access to ThreadLocalRandom state. While > ThreadLocal access is normally pretty fast already, this is > not only faster, it does not degrade in cases where user > programs create large numbers of ThreadLocals, which > may (probabilistically) cause any given access to become > slower.
One random thought. Linux x86 has very fast access to thread local variables: it's just a segment prefix on a load instruction. I wonder if the JVM could utilize something like this and so improve performance for thread locals that don't require non-null initial values. This would be better than piling everything into Thread's state... Andrew.
