Skip site navigation (1) Skip section navigation (2)

Semantics of PostgreSQL Server Log Stats

From: Camilo Porto <camiloporto(at)hotmail(dot)com>
To: <pgsql-performance(at)postgresql(dot)org>
Subject: Semantics of PostgreSQL Server Log Stats
Date: 2007-07-31 14:35:56
Message-ID: BAY120-W236FAB85F84164EED9DFFDBCEF0@phx.gbl (view raw or flat)
Thread:
Lists: pgsql-performance
Hello,

I would like to better understand the semantics of the statistics shown in PostgreSQL Logs. For example, in the report:

DETAIL:  ! system usage stats:
        !       0.000100 elapsed 0.000000 user 0.000000 system sec
        !       [0.016997 user 0.006998 sys total]
        !       0/0 [0/0] filesystem blocks in/out
        !       0/2 [0/1301] page faults/reclaims, 0 [0] swaps
        !       0 [0] signals rcvd, 0/0 [0/0] messages rcvd/sent
        !       0/0 [6/20] voluntary/involuntary context switches
        ! buffer usage stats:
        !       Shared blocks:          1 read,          0 written, buffer hit rate = 0.00%
        !       Local  blocks:          0 read,          0 written, buffer hit rate = 0.00%
        !       Direct blocks:          0 read,          0 written

What each element of this report mean?

many thanks. 
[Camilo Porto]

_________________________________________________________________
Receba GRÁTIS as mensagens do Messenger no seu celular quando você estiver offline. Conheça  o MSN Mobile!
http://mobile.live.com/signup/signup2.aspx?lc=pt-br

Responses

pgsql-performance by date

Next:From: Sachchida OjhaDate: 2007-07-31 15:00:48
Subject: Re: deadlock detected when calling function (Call function_name)
Previous:From: Andreas TilleDate: 2007-07-31 14:10:03
Subject: Using EXECUTE in a function

Privacy Policy | About PostgreSQL
Copyright © 1996-2014 The PostgreSQL Global Development Group