Starts capturing packet data.
To stop capture and trigger dump, use SIGINT or SIGUSR1. Program dumps packets to file and exits.
opapacketcapture [-o outfile] [-d devfile] [-f filterfile] [-t triggerfile] [-l triggerlag][-a alarm] [-p packets] [-s maxblocks] [-v [-v]]
Produces full help text.
Specifies the output file for captured packets. Default = packetDump.pcap
Specifies the device file for capturing packets. Default = /dev/hfi1_diagpkt0
Specifies the file used for filtering. If absent, no filtering is done.
Specifies the file used for triggering a stop capture. If absent, normal triggering is performed.
Specifies the number of packets to collect after trigger condition is met, before dumping data and exiting. Default = 10.
Specifies the number of seconds for alarm trigger to dump capture and exit.
Specifies the number of packets for alarm trigger to dump capture and exit.
Specifies the number of blocks to allocate for ring buffer. Value is in Millions. Default = 2 which corresponds to 128 MiB because 1 block = 64 Bytes.
Produces verbose output. (Use verbose Level 1+ to show levels.)