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Demonstrations of rdmaucma, the Linux eBPF/bcc version.
This program traces RDMA UCMA(Userspace Connection Manager Access) events,
then help us to analyze issues on RDMA CM.
Example of rdmaucma:
# ./rdmaucma
Tracing RDMA Userspace Connection Manager Access event... Hit Ctrl-C to end.
Timestamp Event Family Local Remote
09:47:49 connect request IPv6 fdcc:abcd:15:479::165:6379 fdcc:abcd:15:479::166:61293
09:47:49 established IPv6 fdcc:abcd:15:479::165:6379 fdcc:abcd:15:479::166:61293
09:47:51 disconnected IPv6 fdcc:abcd:15:479::165:6379 fdcc:abcd:15:479::166:61293
09:47:52 connect request IPv6 fdcc:abcd:15:479::165:6379 fdcc:abcd:15:479::166:33402
09:47:52 established IPv6 fdcc:abcd:15:479::165:6379 fdcc:abcd:15:479::166:33402
09:47:53 disconnected IPv6 fdcc:abcd:15:479::165:6379 fdcc:abcd:15:479::166:33402
09:48:06 connect request IPv4 192.168.122.165:6379 192.168.122.166:41498
09:48:06 established IPv4 192.168.122.165:6379 192.168.122.166:41498
09:48:10 disconnected IPv4 192.168.122.165:6379 192.168.122.166:41498
09:48:11 connect request IPv4 192.168.122.165:6379 192.168.122.166:19047
09:48:11 established IPv4 192.168.122.165:6379 192.168.122.166:19047
09:48:11 disconnected IPv4 192.168.122.165:6379 192.168.122.166:19047
Full USAGE:
# ./rdmaucma -h
usage: rdmaucma [-h] [-D]
Trace RDMA Userspace Connection Manager Access Event
optional arguments:
-h, --help show this help message and exit
-D, --debug print BPF program before starting (for debugging purposes)
examples:
./rdmaucma # Trace all RDMA Userspace Connection Manager Access Event