On a large private network there seems to be excessive latency between two boxes which I control. This is stopping the server providing a web service to the client as its causing timeouts.
Here's a slow running request logged in Charles
Timing
Request Start Time 03/11/10 23:21:33
Request End Time 03/11/10 23:21:33
Response Start Time 03/11/10 23:21:42
Response End Time 03/11/10 23:21:42
Duration 8.99 sec
Request Duration 16 ms
Response Duration 0 ms
Latency 8.97 sec
Speed 1.30 KB/s
Response Speed ∞ KB/s
Size
Request Header Size 412 bytes
Response Header Size 151 bytes
Request Size -
Response Size 11.17 KB (11436 bytes)
Total Size 11.72 KB (11999 bytes)
Request Compression -
Response Compression -
As a test I just tried getting an 423k image file via a browser, but this downloads so slow it stalls.
How can I troubleshoot where the problem lies?
I tried using pingplotter
Looks like hops 3 and 4 are the culprits? Where do I go from here?
ANSWER
This turned out to be a problem with the client box running Windows Web Server 2008 R2 and a known network speeds problem if the router is not able to handle network TCP window scaling. Updated router software and problem was resolved.