How to troubleshoot latency between 2 linux hosts

Posted by Jimm on Server Fault See other posts from Server Fault or by Jimm
Published on 2012-11-03T15:01:13Z Indexed on 2012/11/03 17:05 UTC
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networking

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linux-networking

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latency

The latency between 2 linux hosts is about .23ms. They are connected by one switch. Ping & Wireshark confirm the latency number. But, i dont have any visibility into what is causing this latency. How can i know if the latency is due to NIC on host A or B or the switch or the cables?

UPDATE: The .23 ms latency is bad for my existing application, which sends messages at very high frequency and i am trying to see if it can be brought down to .1ms

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