Re: Overload after some minutes, please help!

thank you very much, we will test it

br,
Peter

2006/10/19, Jim C. Nasby <jim@nasby.net>:
> On Thu, Oct 19, 2006 at 01:57:56PM +0200, Peter Bauer wrote:
> In the update statement, don't wrap the ID values in quotes. At best
> it's extra work; at worse it will fool the planner into not using the
> index.
>
> > shared_buffers = 1000           # min 16 or max_connections*2, 8KB each
>
> This is *way* too small for what you're trying to do. Try a minimum of
> 10% of memory, and 50% of memory may be a better idea.
>
> > #temp_buffers = 1000            # min 100, 8KB each
> > #max_prepared_transactions = 5      # can be 0 or more
> > # note: increasing max_prepared_transactions costs ~600 bytes of shared memory
> > # per transaction slot, plus lock space (see max_locks_per_transaction).
> > work_mem = 20480                # min 64, size in KB,
>
> Making that active might help a lot, but beware of running the machine
> out of memory...
>
> > #max_fsm_pages = 20000          # min max_fsm_relations*16, 6 bytes each
>
> Probably needs to get increased.
>
> > #bgwriter_delay = 200           # 10-10000 milliseconds between rounds
> > #bgwriter_lru_percent = 1.0     # 0-100% of LRU buffers scanned/round
> > #bgwriter_lru_maxpages = 5      # 0-1000 buffers max written/round
> > #bgwriter_all_percent = 0.333       # 0-100% of all buffers scanned/round
> > #bgwriter_all_maxpages = 5      # 0-1000 buffers max written/round
>
> The background writer might need to be tuned more aggressively.
>
> > #checkpoint_warning = 30        # in seconds, 0 is off
>
> I'd set that closer to 300 to make sure you're not checkpointing a lot,
> though keep in mind that will impact failover time.
>
> > effective_cache_size = 44800        # typically 8KB each
>
> The machine only has 1/2G of memory?
>
> > #autovacuum_naptime = 60        # time between autovacuum runs, in secs
>
> I'd drop that to 30.
>
> > #autovacuum_vacuum_threshold = 1000 # min # of tuple updates before
> >                     # vacuum
> > #autovacuum_analyze_threshold = 500 # min # of tuple updates before
> >                     # analyze
> > #autovacuum_vacuum_scale_factor = 0.4   # fraction of rel size before
> >                     # vacuum
> > #autovacuum_analyze_scale_factor = 0.2  # fraction of rel size before
> >                     # analyze
>
> I'd cut the above 4 in half.
>
> --
> Jim Nasby                                            jim@nasby.net
> EnterpriseDB      http://enterprisedb.com      512.569.9461 (cell)
>