Use admin stats to collect statistics for a specific time period.
admin { stats | statistics } [, sysmon | "all" | module_name [, inbound | outbound ] [, display_name] ] [, server[, database ] | instance_id ] [, display |, save [, obs_interval ] ] [, sample_period]
By default, Replication Server does not report counters that show 0 (zero) observations for the sample period. You can change that behavior by setting the stats_show_zero_counter configuration on using configure replication server. See the Replication Server Reference Manual > Replication Server Commands for complete syntax and usage information.