RFR (S) CR 8016236: Class.getGenericInterfaces performance improvement

Aleksey Shipilev aleksey.shipilev at oracle.com
Tue Jun 11 16:01:53 UTC 2013


On 06/11/2013 07:58 PM, David Chase wrote:
> 
> On 2013-06-10, at 11:53 AM, Aleksey Shipilev <aleksey.shipilev at oracle.com> wrote:
> 
>>> o.b.ClassBench.generic_getGenericSuperclass     avgt   1      5    1        5.300        0.008  nsec/op
> 
> Am I reading this correctly?  0.008 nsec/op means 125 times 10-to-the-9th ops per second.

Look up to the table header: that is the error margin.
The result is 5.300 +- 0.008 nsec/op.

> That's a high clock rate.

Yeah, that is why any benchmark rating lower than 1 ns/op is raising the
red flag all over the performance guys. :)

-Aleksey.



More information about the core-libs-dev mailing list