RFR: 8193370 Provide more user friendly defaults for HTTP/2 client settings

[Daniel Fuchs]

Hi Simone,

On 12/12/2017 21:02, Daniel Fuchs wrote:
> On 12/12/2017 18:21, Simone Bordet wrote:
>> Our experience is that even in fast network (not localhost) 16 MiB
>> session windows will hit TCP congestion control before stalling HTTP/2
>> flow control.
> 
> I have experimented with 16Mib and 32Mib.
> Even on slow network (VPN) the settings in my patch give me a
> boost of 2+ times faster response.

Chris & I played some more with different settings.
I may have been too aggressive in my previous patch :-)
It seems indeed that a session windows of 32M is a reasonable default.
I have updated my webrev and done some intensive same-binary
test runs:

http://cr.openjdk.java.net/~dfuchs/webrev_8193370/webrev.02

best regards,

-- daniel