This read-write Integer32 specifies the number of packets within a sample run for ESA traffic generation, and a non-zero value must be specified; not applicable to Y.1731 probes. It sets how many probe packets are sent per measurement sample, affecting the statistical confidence of each loss and delay reading. For example, increasing PktsPerSample from 10 to 100 gives a more statistically reliable loss percentage per sample at the cost of slightly more probe traffic on the link.