инструмент ленточной диаграммы для Performance Co-Pilot (strip chart tool for Performance Co-Pilot)
RECORDING
It is possible to make a recording of a set of displayed charts,
for later playback through pmchart or any of the other
Performance Co-Pilot tools. The Record→Start functionality is
simple to configure through the user interface, and allows fine-
tuning of the recording process (including record frequencies
that differ to the pmchart update interval, alternate file
locations, etc).
pmchart produces recordings that are compatible with the PCP
pmafm(1) replay mechanism, for later playback via a new instance
of pmchart. In addition, when recording through pmchart one can
also replay the recording immediately, as on termination of the
recording (through the Record→Stop menu item), an archive mode
Tab will be created with the captured view.
Once recording is active in a Live Tab, the Time Control status
button in the bottom left corner of the pmchart window is
displayed with a distinctive red dot. At any time during a
pmchart recording session, the amount of space used in the
filesystem by that recording can be displayed using the
Record→Query menu item.
Finally, the Record→Detach menu option provides a mechanism
whereby the recording process can be completely divorced from the
running pmchart process, and allowed to continue on when pmchart
exits. A dialog displaying the current size and estimated rate
of growth for the recording is presented. On the other hand, if
pmchart is terminated while recording is in process, then the
recording process will prompt the user to choose immediate
cessation of recording or for it to continue on independently.
All of the record mode services available from pmchart are
implemented with the assistance of the base Performance Co-Pilot
logging services - refer to pmlogger(1) and pmafm(1) for an
extensive description of the capabilities of these tools.
