Hello Teddy,
with the premise that a "rule of thumb" could be not easily applicable in general (you should check a lot of assumptions and conditions, anyway), the suggestion is to derive the right % of project effort to be devoted to Peer Reviews from your historical projects data, as for quantifying (approximately) all the other SDLC phases (cfr. also this excerpt from K.Wieger's book - http://www.awprofessional.com/articles/article.asp?p=24370&seqNum=5 and this 2004 presentation - http://www.secc.org.eg/SMEs%20Presentation/PR%20for%20SMEs%20Awareness%20,%202005.pdf - slide #9).
In general terms, it's possible to find some sources of info but providing data just in absolute terms for PR, but not related to the overall project effort. Some examples:
* Richard Stutzke - in this 2002 presentation (http://sunset.usc.edu/events/2002/cocomo17/Measuring%20IPTs%20(rev%2028OCT02).pdf) - proposed some lessons learned with figures (slides#12-13), and on slide#16 affirmed that "effort (on PR) is the hardest metric to collect" due to several definition changes.
* Don O'Neill reported some data here (http://members.aol.com/ONeillDon2/peer-reviews.html) in the "Inspection Lab Operations", but considering that Sw Inspections "are the most rigourous form of peer reviews", therefore not the unique one that a company can apply.
* Looking more at code reviews, this article (http://www.tcs.com/ps/attachdisplay.aspx?cat_id=2397&art_id=892) proposed a model, called 9Q (9 quadrants), proposing also cost and yield figures per review (code) unit, but not an overall
* http://www.spin.org/presentations/2001/SPIN-2001-05-24.pdf in slide #20 presents some data about the inspections done (#, effort and # of errors generated), but don't express such effort in % against the overall project effort.
Hope this could help,
Best regards,
Luigi Buglione
-----Original Message-----
From: Teddy John [mailto:teddy_cmmi@...]
Sent: mercoledì 9 febbraio 2005 17.13
To: cmmi_process_improvement@yahoogroups.com
Subject: [CMMi Process Improvement] Peer Reviews - How much time to spendHi,I'm aware of the different informal and formal (inspection) peer review techniques, how to implement them etc...But i needed some help from you all to know if there is some guideline or recomended approach on deciding how much time to be allocated for the Peer review process while drawing up the project plan... Is there any kind off "Percentage of project" or "X number of hours" criterias that is recomended..Looking forward to any feedback.. Thanks,Teddy
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