Here are the only things that I amended, all other settings are defaults.

maintenance_work_mem=2GB        
checkpoint_segments=64  
wal_keep_segments=128   
max_prepared_transactions=10    
max_wal_senders=3       
wal_level=hot_standby   
max_files_per_process=1000000   
max_stack_depth=7MB     
wal_buffers=64MB        
shared_buffers=60GB     
work_mem64MB

Other settings were changed and reverted again due to performance decreases.

I also dropped shared_buffers down to 32GB, TPS dropped further.

On 18/08/15 16:12, Joshua D. Drake wrote:

On 08/18/2015 08:01 AM, Michael H wrote:

Hi,

I've been tuning our new database server, here's some info...

CentOS Linux release 7.1.1503 (Core)
3.10.0-229.11.1.el7.x86_64

8 x 16GB 1600MHz PC3-12800 DDR3            - 128GB total
2 x AMD Opteron 6386SE 2.8GHz/16-core/140w     - 32 cores total
4 x 300GB SAS 10k HDD                 - raid 1+0 configuration
1GB FBWC for P-series smart array         - cache enabled


I praised 9.4 for the new features and now I'm cursing it!

any info would be appreciated,

Without the respective postgresql.conf files, none of this means anything.

Sincerely,

JD




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