code review 11569043: runtime: prevent sysmon from polling network excessivly

runtime: prevent sysmon from polling network excessivly
If the network is not polled for 10ms, sysmon starts polling network
on every iteration (every 20us) until another thread blocks in netpoll.
Fixes issue 5922.

[dvyukov, 2013-07-19 12:05:36]

Hello golang-dev@googlegroups.com,

I'd like you to review this change to
https://dvyukov%40google.com@code.google.com/p/go/

[iant, 2013-07-19 13:14:05]

LGTM

I'm guessing that we want this in 1.1.2.  If you agree, please open an issue,
add the 1.1.2 label, and mark this CL as fixing that issue.  Thanks.

[dvyukov, 2013-07-19 13:45:17]

On 2013/07/19 13:14:05, iant wrote:
> LGTM
> 
> I'm guessing that we want this in 1.1.2.  If you agree, please open an issue,
> add the 1.1.2 label, and mark this CL as fixing that issue.  Thanks.

Done
https://code.google.com/p/go/issues/detail?id=5922

[dvyukov, 2013-07-19 13:45:48]

*** Submitted as https://code.google.com/p/go/source/detail?r=6b3c351c7fe6 ***

runtime: prevent sysmon from polling network excessivly
If the network is not polled for 10ms, sysmon starts polling network
on every iteration (every 20us) until another thread blocks in netpoll.
Fixes issue 5922.

R=golang-dev, iant
CC=golang-dev
https://codereview.appspot.com/11569043