Hi,
I'm using and Amazon ec2 instance with the following spec and the application that I'm running uses a postgres DB 9.1.
The app has 3 main cron jobs.
Ubuntu 12, High-Memory Extra Large Instance
17.1 GB of memory
6.5 EC2 Compute Units (2 virtual cores with 3.25 EC2 Compute Units each)
420 GB of instance storage
64-bit platform
I've changed the main default values under file postgresql.conf to:
shared_buffers = 4GB
work_mem = 16MB
wal_buffers = 16MB
checkpoint_segments = 32
effective_cache_size = 8GB
When I run the app, after an hour or two, free -m looks like below ans the crons can't run due to memory loss or similar (i'm new to postgres and db admin).
Thanks!
free -m, errors:
total used free shared buffers cached
Mem: 17079 13742 3337 0 64 11882
-/+ buffers/cache: 1796 15283
Swap: 511 0 511
total used free shared buffers cached
Mem: 17079 16833 245 0 42 14583
-/+ buffers/cache: 2207 14871
Swap: 511 0 511
**errors:
DBI connect('database=---;host=localhost','postgres',...) failed: could not fork new process for connection: Cannot allocate memory
could not fork new process for connection: Cannot allocate memory
and
execute failed: ERROR: out of memory
DETAIL: Failed on request of size 968. [for Statement "
SELECT DISTINCT....
Thank you!
I'm using and Amazon ec2 instance with the following spec and the application that I'm running uses a postgres DB 9.1.
The app has 3 main cron jobs.
Ubuntu 12, High-Memory Extra Large Instance
17.1 GB of memory
6.5 EC2 Compute Units (2 virtual cores with 3.25 EC2 Compute Units each)
420 GB of instance storage
64-bit platform
I've changed the main default values under file postgresql.conf to:
shared_buffers = 4GB
work_mem = 16MB
wal_buffers = 16MB
checkpoint_segments = 32
effective_cache_size = 8GB
When I run the app, after an hour or two, free -m looks like below ans the crons can't run due to memory loss or similar (i'm new to postgres and db admin).
Thanks!
free -m, errors:
total used free shared buffers cached
Mem: 17079 13742 3337 0 64 11882
-/+ buffers/cache: 1796 15283
Swap: 511 0 511
total used free shared buffers cached
Mem: 17079 16833 245 0 42 14583
-/+ buffers/cache: 2207 14871
Swap: 511 0 511
**errors:
DBI connect('database=---;host=localhost','postgres',...) failed: could not fork new process for connection: Cannot allocate memory
could not fork new process for connection: Cannot allocate memory
and
execute failed: ERROR: out of memory
DETAIL: Failed on request of size 968. [for Statement "
SELECT DISTINCT....
Thank you!
