Abstract: Some embodiments provide a method of identifying packet latency in a software defined datacenter (SDDC) that includes a network and multiple host computers executing multiple machines. At a first host computer, the method identifies and stores (i) multiple time values associated with several packet processing operations performed on a particular packet sent by a first machine executing on the first host computer, and (ii) a time value associated with packet transmission through the SDDC network from the first host computer to a second host computer that is a destination of the particular packet. The method provides the stored time values to a set of one or more controllers to process to identify multiple latencies experienced by multiple packets processed in the SDDC.

Abstract: An ejecting-clamping-pulling combined seedling fetching device for an automatic transplanter and an operating method therefor. The device comprises: a seedling ejecting mechanism (1), a seedling feeder mechanism (2), a seedling fetching mechanism (3), and a control system. The seedling feeder mechanism (2) is mounted on a stander; the seedling ejecting mechanism (1) is mounted on the seedling feeder mechanism (2) and is located at the rear side of the seedling feeder mechanism (2); the seeding fetching mechanism (3) is mounted at the stander and is located at the front side of the seedling feeder mechanism (2). An upper ejector rod support (1-6) and a lower ejector rod support (1-4) are provided on the seedling ejecting mechanism (1); the seedling ejecting rods on the two supports are disposed in a staggered manner, and the upper ejector rod support (1-6) and the lower ejector rod support (1-4) are configured to alternately eject and loosen seedling trays.

Abstract: An ejecting-clamping-pulling combined seedling fetching device for an automatic transplanter and an operating method therefor. The device comprises: a seedling ejecting mechanism (1), a seedling feeder mechanism (2), a seedling fetching mechanism (3), and a control system. The seedling feeder mechanism (2) is mounted on a stander; the seedling ejecting mechanism (1) is mounted on the seedling feeder mechanism (2) and is located at the rear side of the seedling feeder mechanism (2); the seeding fetching mechanism (3) is mounted at the stander and is located at the front side of the seedling feeder mechanism (2). An upper ejector rod support (1-6) and a lower ejector rod support (1-4) are provided on the seedling ejecting mechanism (1); the seedling ejecting rods on the two supports are disposed in a staggered manner, and the upper ejector rod support (1-6) and the lower ejector rod support (1-4) are configured to alternately eject and loosen seedling trays.