postmaster.pid

Hello all,

Could someone answer me what those number in postmaster.pid file means?

> cat postmaster.pid

29169
/usr/local/pgsql/data
  5432001        74

1) 29169 = process id - ok
2) /usr/local/pgsql/data = cluster path - ok
3) 5432001 = ??? - what does this mean??? Would be the transaction number responsible for the server start up???
4) 74 = ???

Tks

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Jose Roberto M. Garcia, MSc
Systems Analist - Database Group
Voice: + 55 12 3186-8405
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http://www.cptec.inpe.br
http://www.inpe.br