官方客户端已经有tracing功能。

参考：Response Time Observability with the Java SDK

代码：ConnectionBase.java

dcpdump

couchbase 抓包工具

dcpdump is used to analyse a couchbase dcp request and response from network's perspective, aka packet capture and parse the contents of the packet.

Build

go build

Capture all dcp packet

./dcpdump -localIP=10.153.194.168 -snapshotLen=1024 -printAll=true -printInterval=100 -timeout=0 -mode=client

Cpature dcp packet from or to one specific host

./dcpdump -localIp=10.153.194.168 -snapshotLen=1024 -printAll=true -printInterval=100 -timeout=0 -mode=server -remoteIP=10.153.194.188

Options

localIP为运行dcpdump的机器的IP

snapshotLen指从抓取的MAC帧中截取的长度(具体信息可以man tcpdump)

printAll为是否输出超时响应的具体信息

printInterval为隔一定时间(printInterval秒)，输出到目前为止响应时间的metrics信息

timeout为超时时间

mode为运行模式，在客户端机器上运行时，mode为client，服务端节点上运行时，mode为server

remoteIP为与本机交互的其他机器的IP