(keitai-l) Re: Network latency when using HTTPConnection

Gustaf,

Many thanks - these figues look pretty good, especially if they are the
average latencies. I guess the next question is what is the standard
deviation. From prior posts, this looks like it would be pretty high
depending on location and time of day. I will run some tests using the x-9
tools referenced in an earlier post and see what I can discover myself.

The GPRS figures referenced look pretty awful. Would these apply to
J-Phone's GPRS rollout I wonder?

Thanks again,

Chris

-----Original Message-----
From: Gustaf Rosell [mailto:gustaf@xpedio.com]
Sent: Thursday, August 30, 2001 8:00 PM
To: keitai-l@appelsiini.net
Subject: (keitai-l) Re: Network latency when using HTTPConnection


At 08:26 2001-08-29, you wrote:
>Hi,
>
>Does anyone have any metrics on the latency in the
>iMode network?

Isn't it in the order of 300 ms (taken from the back of the head 
somewhere)? This is true roundtrip under small load to DoCoMo servers.

It is about the same for 3G, I think.

GPRS however is typically 800 ms, but in some networks 1 200 ms! And this, 
since it is GPRS, under very low load.

/g




>I am designing at an iAppli that involves considerable
>client-server interaction, making use of the
>javax.microedition.io.Connector and
>com.nttdocomo.io.HttpConnection classes.
>
>Typical requests and responses will be very small - in
>the order of a single 128 byte packet. My question is,
>when I request a network resource in this way, what
>latency can I expect to see from the iMode network?
>Many thanks,
>
>Chris
>
>

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