The evbtagger command takes a stream of ring items on stdin and emits a stream of ring items prepended by fragment headers on stdout. It accepts the following program options:
--buffersizeThe number of Kbytes of input buffer used for reads from stdin. This must be large enough to contain at least one input ring item. Larger buffers, result in better throughput up to a point but longer latencies between fragments sent from ringtostdout and seeing those fragments in events in the output ringbuffer.
--sourceidSome NSCLDAQ ring items types do not have the body headers from which the information required by the fragment header can be extracte. These items get the timestamp of the previous item and source id specified by the value of this option.
Normally the value of this option should be just the value of the source id of the data source for EVBLite.
--resettsBy default, this is enabled. If the option is supplied, it will be turned off. When enabled, when a begin run is encountered, the last timestamp value is reset to zero. This really only influences the timestamps given to items that don't have timestamps before the first timestamped events appear. It should be turned off in systems that don't reset the timestamp at the beginning of the run (e.g. XIA systems in infinity clock mode).