Bom dia pessoal
Recentemente uma lentidão absurda em um outro servidor GIS em relação as
demais solicitações anteriores.
Ambiente:
Slackware 13.1 64 bits
PostgreSQL 8.4.4
Memória : 8G
Parâmetros Atuais:
listen_addresses = '*'
max_connections = 100
shared_buffers = 24MB
work_mem = 1MB # min 64kB
maintenance_work_mem = 16MB # min 1MB
checkpoint_segments = 15 # in logfile segments, min 1, 16MB
each
checkpoint_timeout = 5min # range 30s-1h
checkpoint_completion_target = 0.9 # checkpoint target duration, 0.0 -
1.0
checkpoint_warning = 30s
Tentei fazer algumas alterações nos parâmetro de memória, mas recebi essas
mensagens abaixo:
2013-08-08 16:00:00 BRT [2503]: [1-1] user=,db= FATAL: could not create
shared memory segment: Invalid argument
2013-08-08 16:00:00 BRT [2503]: [2-1] user=,db= DETAIL: Failed system call
was shmget(key=5432001, size=140902400, 03600).
2013-08-08 16:00:00 BRT [2503]: [3-1] user=,db= HINT: This error usually
means that PostgreSQL's request for a shared memory segment exceeded
your kernel's SHMMAX parameter. You can either reduce the request size or
reconfigure the kernel with larger SHMMAX.
To reduce the request size (currently 140902400 bytes), reduce PostgreSQL's
shared_buffers parameter (currently 16384) and/or
its max_connections parameter (currently 103).
If the request size is already small, it's possible that it is less
than your kernel's SHMMIN parameter, in which case raising the request size
or
reconfiguring SHMMIN is called for.
The PostgreSQL documentation contains more information about shared
memory configuration.
Att,
Emerson Martins
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