[PATCHES] Enable faster proxy response on low-latency links - Plain Text version
aland at deployingradius.com
Sat May 17 02:37:38 CEST 2014
Jon Sexson wrote:
> These patches add support for several options allowing configuration
> of reduced proxy response times on low-latency links. They are being
> submitted so that we can migrate from our current platform to
That's always a good idea. :)
> Due to SLAs with our Tier-1 Carriers, we require support for a higher
> precision response window and a reduced initial request transmission
> delay to be able to configure sub-second proxy response times.
Hmm... I'm not sure what patch #4 is for. The server doesn't have a
transmission delay. The delay you're changing is just a timer for the
main thread to service the requests.
If the response_window is small, then the delay should be set below
response_window, so that the proxied request will be timed out.
Is that what the patch is doing?
> We need to override response window for some Tier-1 carrier clients so the
> proxy server fails over to next home server faster to satisfy required
> response times of their tighter SLAs.
That makes sense.
> Sometimes a given sgsn has a very short-lived response time problem which
> doesn't deserve putting the home server into the zombie mode, so we'd like
> to configure tolerance to a certain amount of response window misses, which
> "max_response_timeouts" allows us to do.
That makes sense, too. I think the name is a little confusing, but
I'll look at that.
Overall, the patches look reasonable and simple.
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