[WIMS] High North has reviewed Power Model/MIB and has comments

[WIMS] High North has reviewed Power Model/MIB and has comments

[WIMS] High North has reviewed Power Model/MIB and has comments

Ira McDonald blueroofmusic at gmail.com
Wed Nov 3 17:07:46 UTC 2010


Hi,                                          Wednesday (3 November 2010)

High North has reviewed the PWG Imaging System Power Management specs
and has the following comments:


Power Model (wd-wimspower10-20100926.pdf)

(1) Editorial - replace "transitional" with "interrupt" (for states)
    - section 2.4.2, line 408 (first instance - global change)

    Rationale:  Original term is obscure and inaccurate
    - all power states may be "transitional" during ResetXxx operations
    - all non-Stable states are defined as software/hardware interrupts
      in sections 2.4.2 and 2.4.3

(2) Technical - delete all 10 PowerGeneral.MaxXxxRecords elements
    - section 5.1.1 through 5.1.10, lines 825-892

    Rationale:  Table limit elements are unlikely to be queried/used
    - typical Client will simply attempt to create a row

(3) Technical - reduce PowerMeter from RECOMMENDED to OPTIONAL
    - section 5.5, lines 1043-1050

    Rationale:  All elements exposing power usage should be OPTIONAL
    - legal issues have already been caused by vendor power usage claims

(4) Technical - reduce PowerSupport from RECOMMENDED to OPTIONAL
    - section 6.1, lines 1189-1193

    Rationale:  All elements exposing power usage should be OPTIONAL
    - legal issues have already been caused by vendor power usage claims

    Rationale:  PowerSupport group was originally designed to be simple
    list of supported power states
    - addition of power/job/network usage elements forced only Stable
      states to be listed (breaking original design)
    - PowerGeneral.CanRequestPowerStates was added to correct the design
      flaw, so original purpose of PowerSupport group is now redundant

(5) Technical - reduce PowerTransition from RECOMMENDED to OPTIONAL
    - section 6.2, lines 1270-1275

    Rationale:  All elements exposing power usage should be OPTIONAL
    - legal issues have already been caused by vendor power usage claims
      and transition times are implicit vendor power usage claims
    - PowerTransition shouldn't be higher conformance than PowerSupport


Power MIB (wd-wimspowermib10-20100926.pdf/mib)

(1) Editorial - replace "transitional" with "interrupt" (for states)
    - section 2.4, line 228 (first instance - global change)

    Rationale:  See Power Model comment (1) above

(2) Technical - delete all 10 powGeneral.MaxXxxRecords objects
    - section 5 (spec), lines 261-363 and 389-413 (MIB)

    Rationale:  See Power Model comment (2) above

(3) Technical - reduce powMeterGroup from RECOMMENDED to OPTIONAL
    - section 5 (spec), lines 1740-1744 (MIB)

    Rationale:  See Power Model comment (3) above

(4) Technical - reduce powSupportGroup from RECOMMENDED to OPTIONAL
    - section 5 (spec), lines 1692-1697 (MIB)

    Rationale:  See Power Model comment (4) above

(5) Technical - reduce powTransitionGroup from RECOMMENDED to OPTIONAL
    - section 5 (spec), lines 1699-1704 (MIB)

    Rationale:  See Power Model comment (5) above


Cheers,
- Ira (Editor of Power Model and Power MIB)

Ira McDonald (Musician / Software Architect)
Chair - Linux Foundation Open Printing WG
Co-Chair - IEEE-ISTO PWG IPP WG
Co-Chair - TCG Hardcopy WG
IETF Designated Expert - IPP & Printer MIB
Blue Roof Music/High North Inc
http://sites.google.com/site/blueroofmusic
http://sites.google.com/site/highnorthinc
mailto:blueroofmusic at gmail.com
Christmas through April:
  579 Park Place  Saline, MI  48176
  734-944-0094
May to Christmas:
  PO Box 221  Grand Marais, MI 49839
  906-494-2434

-- 
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.pwg.org/pipermail/wims/attachments/20101103/adeb72cc/attachment-0001.html>


More information about the wims mailing list