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

[Chris Hegarty]

Daniel, Simone,

On 13/12/17 01:17, Daniel Fuchs wrote:
> 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.

Yes, I think this is better, thanks.

> I have updated my webrev and done some intensive same-binary
> test runs:
> 
> http://cr.openjdk.java.net/~dfuchs/webrev_8193370/webrev.02

This link appears to be not working, so I copied the webrev
to the following location:

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

-Chris.