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DarkSideOfTheQ_
Aug 09, 2011Nimbostratus
ltm to server connection time
Hellooo everybody,
Is there a way to determine how long it takes for the LTM to open a connection to a server in a pool? The b conn cmd seemed to show current connections with IDLE times, but that's not what I'm looking for. I'm guessing I'll need to put in a filter??? All thoughts/comments welcome.
TIA
-DarkSide
- natheCirrocumulusDarkside,
- DarkSideOfTheQ_NimbostratusI figured as much, course that means I'll need to run the dump when this problem is happening rather than review some logs the next day as I'd hoped.
- natheCirrocumulusI'd get that tcpdump primed and ready for action. Seriously though, if everything is working fine at the moment it would also be a good time to run the command. At least then when the problem occurs you've got a baseline to compare it to.
- hooleylistCirrostratusWhat protocol(s) is this for? For HTTP, you could save a timestamp in an iRule in HTTP_REQUEST and check the delta in SERVER_CONNECTED. If it's over X, you could use High Speed Logging to send a message to a pool of syslog servers.
- JRahmAdminyou could get close (but no finer than a ms) with an iRule by storing the time in HTTP_REQUEST_SEND (assuming http) and then do a diff in the SERVER_CONNECTED event. You might also experiment with IP::stats age and TCP::rtt in the SERVER_CONNECTED event.
- natheCirrocumulusDarkside,
- DarkSideOfTheQ_NimbostratusIt is indeed HTTP and a situation where something isn't performing well so it *must* be the LTM. :-) I'll get a tcpdump ready for action and review the links y'all provided as well.
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