On 1/11/2013 10:36 a.m., Dr.x wrote:
1383254455.257 4846 x.x.x.x TCP_MISS_ABORTED/000 0 GET
http://imgcdn.ptvcdn.net/pan_img/appDownload/PandoraService/Service_Info.xml
hi , i use rock with smp and i a have very low hit ratio !!!
also i have logs of :
TCP_MISS_ABORTED
as an example :
1383254455.257 4846 x.x.x.x TCP_MISS_ABORTED/000 0 GET
http://imgcdn.ptvcdn.net/pan_img/appDownload/PandoraService/Service_Info.xml
===============================================
does this mean that there is a degredation ?
or natural log ?
Yes to both.
It is bad for user experience, since it means they had some reason to
abort. It also wastes one socket FD on your proxy server, including the
memory resources necessary to track that connection on your machine and
every router along the path between it and the client.
It is becomming common as browsers do "Happy Eyeballs" behaviour and
open many connections they are never going to use. Passing the resource
costs to the network infrastructure in order to get a few
milli-/micro-/nano- seconds worth of speed.
It also shows up on "long-polling" traffic, where the client starts a
unknown-length request and leaves it running with one or two-way data
transfer. If there is any problem on the path between proxy and client
(ie NAT timeouts) the connection shows up like this.
So it is "normal" network behaviour and perfectly within the protocol to
be happening at any time. But does signal that something a bit
undesirable has happened.
Amos
