Changes between Version 7 and Version 8 of SessionInfo
- Timestamp:
- 08/28/14 09:57:03 (7 years ago)
Legend:
- Unmodified
- Added
- Removed
- Modified
-
SessionInfo
v7 v8 50 50 * the server to receive it, process it and send the "echo" response 51 51 * the client to process the response and calculate the latency 52 It is very different from an [http://en.wikipedia.org/wiki/Ping_(networking_utility) ICMP Ping] because it includes on both ends: the full operating system network stack, the operating system scheduler, the Python interpreter with its threads and locking, TCP re-transmits. On a busy system, this value may well go up as other packets are ahead of the send queue at either end. A modern CPU should be able to keep this value around 50ms plus the TCP connection latency (TCP packet drops can cause this value to increase more dramatically). 52 53 It is very different from an [http://en.wikipedia.org/wiki/Ping_(networking_utility) ICMP Ping] because it includes on both ends: the full operating system network stack, the operating system scheduler, the Python interpreter with its threads and locking, TCP re-transmits. On a busy system, this value may well go up as other packets are ahead of the send queue at either end. A modern CPU should be able to keep this value around 50ms plus the TCP connection latency (TCP packet drops can cause this value to increase more dramatically). 53 54 54 55 You can see a screenshot [/attachment/wiki/SessionInfo/session-info-statistics.png here]