Cisco Cisco Packet Data Interworking Function (PDIF)
Support Data Collector
Using SDRs to Diagnose Problems ▀
ASR 5500 System Administration Guide, StarOS Release 18 ▄
351
The time interval between collections may vary by several minutes in relation to the specified sleep-duration. This is
because the interval specifies the idle time between scheduled collection runs. Since the actual overhead of the
collecting process is not included in the scheduled intervals, the time differences between collections includes this non-
deterministic amount of time.
because the interval specifies the idle time between scheduled collection runs. Since the actual overhead of the
collecting process is not included in the scheduled intervals, the time differences between collections includes this non-
deterministic amount of time.
Important:
Using a shorter interval to compensate for this behavior is not recommended, since it will only add to
the overhead incurred by the collection process and will ultimately impact the overall system performance. The sleep-
duration (idle-time) between scheduled collections is an important component of the “self-throttling” mechanism that
should not be circumvented by the user.
duration (idle-time) between scheduled collections is an important component of the “self-throttling” mechanism that
should not be circumvented by the user.
The Exec Mode show support collection command displays useful information about the Support Data Collector. The
output includes information about when the collector last ran, how long it took to run, when it is scheduled to run again,
as well as the number of SDRs currently stored, where they are stored, and how much storage space is being used. Refer
to
output includes information about when the collector last ran, how long it took to run, when it is scheduled to run again,
as well as the number of SDRs currently stored, where they are stored, and how much storage space is being used. Refer
to
Using SDRs to Diagnose Problems
The user can compare the SDRs by examining two or more in sequence. These SDRs are dumped out in their CLI-
formatted output display. Comparing the display outputs reveals trends and performance or configuration differences
that indicate problem areas.
formatted output display. Comparing the display outputs reveals trends and performance or configuration differences
that indicate problem areas.
Once specific record sections have been identified as having problematic characteristics, only the CLI show commands
associated with those sections need be monitored and compared to further isolate the problem areas. In addition,
individual SDRs may be transferred via system-supported protocols to remote system, or the current collection may be
transferred as a set for later analysis.
associated with those sections need be monitored and compared to further isolate the problem areas. In addition,
individual SDRs may be transferred via system-supported protocols to remote system, or the current collection may be
transferred as a set for later analysis.