On 13/03/11 10:00, Tsantilas Christos wrote:
Convert dns_timeout and dns_retransmit_interval configuration options to
use millisecond resolution.
One second resolution is too coarse for small timeouts in
delay-sensitive environments, especially when a retransmit, bypass, or
another corrective action is available and is likely to produce a
positive outcome. In DNS world specifically, most timeouts are measured
in milliseconds.
NOTE: This patch add a new cf.data.pre type the time_msec which is a
uint64_t. I found more practical to use an integer to store miliseconds,
but using the timeval type may has advandages too.
This is a Measurement Factory project
+1.
I will also propose a related change. Reducing the dns_timeout to 5
seconds default.
The existing state of several 2 minute dns_timeout expecting to be
finished within a 1 minute connect_timeout is leading to connection
problems on some systems where IPv6 times out but IPv4 is perfectly usable.
Amos
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