Changelist wastage [was RE: [p4] Re: Labels or branches?]

[Gordon Broom]

I seem to recall Simon Morton saying:
> That seems like an unnecessary waste of perfectly good numbers to me.
> 
> Still, I guess change numbers are cheap ;-)  On that subject, does anyone
> know if there is a "maximum" change number?  Is it a 32-bit int?  Has
anyone
> got past 100,000?  Just curious.

I already did this calculation, because I have scripts which generate
temporary changelists (which get thrown away) and I was also worried about
"wastage".

Assuming the changelist counter is an unsigned 32 bit integer.  Thus, we
have 4294967296 changelist numbers to use.  If you submit one changelist a
second, it'll take you about 136 years to run out (I think I did the math
correctly).  I plan to be retired by then. :-)

As for 100,000: nope, we're at about 42,000 right now.  I don't think any of
my scripts have any hard-coded limit for changelist numbers at least.  Build
numbers are a different story :-)

Gord Broom
Configuration Management Engineer
Power Measurement Ltd.
http://www.pml.com/
+1 250 652 7100 x7608