Thread: Auto VACUUM
#track_activities = on
track_counts = on
#track_functions = none # none, pl, all
#track_activity_query_size = 1024
#update_process_title = on
#stats_temp_directory = 'pg_stat_tmp'
#------------------------------------------------------------------------------
# AUTOVACUUM PARAMETERS
#------------------------------------------------------------------------------
autovacuum = on # Enable autovacuum subprocess? 'on'
# requires track_counts to also be on.
#log_autovacuum_min_duration = -1 # -1 disables, 0 logs all actions and
# their durations, > 0 logs only
# actions running at least this number
# of milliseconds.
autovacuum_max_workers = 10 # max number of autovacuum subprocesses
autovacuum_naptime = 180min # time between autovacuum runs
#autovacuum_vacuum_threshold = 50 # min number of row updates before
# vacuum
#autovacuum_analyze_threshold = 50 # min number of row updates before
# analyze
#autovacuum_vacuum_scale_factor = 0.2 # fraction of table size before vacuum
#autovacuum_analyze_scale_factor = 0.1 # fraction of table size before analyze
#autovacuum_freeze_max_age = 200000000 # maximum XID age before forced vacuum
# (change requires restart)
#autovacuum_vacuum_cost_delay = 20ms # default vacuum cost delay for
# autovacuum, in milliseconds;
# -1 means use vacuum_cost_delay
#autovacuum_vacuum_cost_limit = -1 # default vacuum cost limit for
# autovacuum, -1 means use
# vacuum_cost_limit
On Wed, 2010-03-03 at 12:46 -0500, akp geek wrote: > Hi All - > > I need some help from you. this question is in follow up > with my earlier questions. I turned the autovacuum and restarted the > db and the settings I have as follows. It seems the autovacuum process > has not been turned on. It's almost more than 3 hours I have restarted > my DB with following setting. I have ps -ef to see the proces list. > Is there some thing I am doing wrong. > > Can you please help? I'dd suggest leaving the "naptime" in the default (60 seconds) Your value is very high... too high... I'dd say.... Use values around 60 seconds (never minutes)... > > Regards > > # - Query/Index Statistics Collector - > #track_activities = on > track_counts = on > #track_functions = none # none, pl, all > #track_activity_query_size = 1024 > #update_process_title = on > #stats_temp_directory = 'pg_stat_tmp' > > > #------------------------------------------------------------------------------ > # AUTOVACUUM PARAMETERS > #------------------------------------------------------------------------------ > > autovacuum = on # Enable autovacuum subprocess? 'on' > # requires track_counts to > also be on. > #log_autovacuum_min_duration = -1 # -1 disables, 0 logs all > actions and > # their durations, > 0 logs > only > # actions running at least > this number > # of milliseconds. > autovacuum_max_workers = 10 # max number of autovacuum > subprocesses > autovacuum_naptime = 180min # time between autovacuum runs > #autovacuum_vacuum_threshold = 50 # min number of row updates > before > # vacuum > #autovacuum_analyze_threshold = 50 # min number of row updates > before > # analyze > #autovacuum_vacuum_scale_factor = 0.2 # fraction of table size > before vacuum > #autovacuum_analyze_scale_factor = 0.1 # fraction of table size > before analyze > #autovacuum_freeze_max_age = 200000000 # maximum XID age before > forced vacuum > # (change requires restart) > #autovacuum_vacuum_cost_delay = 20ms # default vacuum cost delay > for > # autovacuum, in milliseconds; > # -1 means use > vacuum_cost_delay > #autovacuum_vacuum_cost_limit = -1 # default vacuum cost limit > for > # autovacuum, -1 means use > # vacuum_cost_limit > >
On Wed, 2010-03-03 at 12:46 -0500, akp geek wrote:I'dd suggest leaving the "naptime" in the default (60 seconds)
> Hi All -
>
> I need some help from you. this question is in follow up
> with my earlier questions. I turned the autovacuum and restarted the
> db and the settings I have as follows. It seems the autovacuum process
> has not been turned on. It's almost more than 3 hours I have restarted
> my DB with following setting. I have ps -ef to see the proces list.
> Is there some thing I am doing wrong.
>
> Can you please help?
Your value is very high... too high... I'dd say....
Use values around 60 seconds (never minutes)...--
>
> Regards
>
> # - Query/Index Statistics Collector -
> #track_activities = on
> track_counts = on
> #track_functions = none # none, pl, all
> #track_activity_query_size = 1024
> #update_process_title = on
> #stats_temp_directory = 'pg_stat_tmp'
>
>
> #------------------------------------------------------------------------------
> # AUTOVACUUM PARAMETERS
> #------------------------------------------------------------------------------
>
> autovacuum = on # Enable autovacuum subprocess? 'on'
> # requires track_counts to
> also be on.
> #log_autovacuum_min_duration = -1 # -1 disables, 0 logs all
> actions and
> # their durations, > 0 logs
> only
> # actions running at least
> this number
> # of milliseconds.
> autovacuum_max_workers = 10 # max number of autovacuum
> subprocesses
> autovacuum_naptime = 180min # time between autovacuum runs
> #autovacuum_vacuum_threshold = 50 # min number of row updates
> before
> # vacuum
> #autovacuum_analyze_threshold = 50 # min number of row updates
> before
> # analyze
> #autovacuum_vacuum_scale_factor = 0.2 # fraction of table size
> before vacuum
> #autovacuum_analyze_scale_factor = 0.1 # fraction of table size
> before analyze
> #autovacuum_freeze_max_age = 200000000 # maximum XID age before
> forced vacuum
> # (change requires restart)
> #autovacuum_vacuum_cost_delay = 20ms # default vacuum cost delay
> for
> # autovacuum, in milliseconds;
> # -1 means use
> vacuum_cost_delay
> #autovacuum_vacuum_cost_limit = -1 # default vacuum cost limit
> for
> # autovacuum, -1 means use
> # vacuum_cost_limit
>
>
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What's the complete error message? Vacuum is using maintenance_work_mem. What is your setting maintenance_work_mem compared to your RAM size. Igor Neyman > -----Original Message----- > From: akp geek [mailto:akpgeek@gmail.com] > Sent: Wednesday, March 03, 2010 1:10 PM > To: Joao Ferreira gmail > Cc: pgsql-general > Subject: Re: Auto VACUUM > > thank you . I changed the value to 1M and I started seeing > the autovacuum being triggered. But I am getting the > following message > > ERROR: canceling autovacuum task, is it because the table > are getting updated and the vacuum process in place and > vacuum happens at a later point of time > > Regards > > > > On Wed, Mar 3, 2010 at 1:02 PM, Joao Ferreira gmail > <joao.miguel.c.ferreira@gmail.com> wrote: > > > On Wed, 2010-03-03 at 12:46 -0500, akp geek wrote: > > Hi All - > > > > I need some help from you. this question is > in follow up > > with my earlier questions. I turned the autovacuum > and restarted the > > db and the settings I have as follows. It seems the > autovacuum process > > has not been turned on. It's almost more than 3 hours > I have restarted > > my DB with following setting. I have ps -ef to see > the proces list. > > Is there some thing I am doing wrong. > > > > Can you please help? > > > I'dd suggest leaving the "naptime" in the default (60 seconds) > > Your value is very high... too high... I'dd say.... > > Use values around 60 seconds (never minutes)... > > > > > > Regards > > > > # - Query/Index Statistics Collector - > > #track_activities = on > > track_counts = on > > #track_functions = none # none, pl, all > > #track_activity_query_size = 1024 > > #update_process_title = on > > #stats_temp_directory = 'pg_stat_tmp' > > > > > > > #------------------------------------------------------------- > ----------------- > > # AUTOVACUUM PARAMETERS > > > #------------------------------------------------------------- > ----------------- > > > > autovacuum = on # Enable autovacuum > subprocess? 'on' > > # requires > track_counts to > > also be on. > > #log_autovacuum_min_duration = -1 # -1 > disables, 0 logs all > > actions and > > # their > durations, > 0 logs > > only > > # actions > running at least > > this number > > # of milliseconds. > > autovacuum_max_workers = 10 # max number > of autovacuum > > subprocesses > > autovacuum_naptime = 180min # time > between autovacuum runs > > #autovacuum_vacuum_threshold = 50 # min number > of row updates > > before > > # vacuum > > #autovacuum_analyze_threshold = 50 # min number > of row updates > > before > > # analyze > > #autovacuum_vacuum_scale_factor = 0.2 # fraction of > table size > > before vacuum > > #autovacuum_analyze_scale_factor = 0.1 # fraction of > table size > > before analyze > > #autovacuum_freeze_max_age = 200000000 # maximum XID > age before > > forced vacuum > > # (change > requires restart) > > #autovacuum_vacuum_cost_delay = 20ms # default > vacuum cost delay > > for > > # autovacuum, > in milliseconds; > > # -1 means use > > vacuum_cost_delay > > #autovacuum_vacuum_cost_limit = -1 # default > vacuum cost limit > > for > > # autovacuum, > -1 means use > > # vacuum_cost_limit > > > > > > > > -- > Sent via pgsql-general mailing list > (pgsql-general@postgresql.org) > To make changes to your subscription: > http://www.postgresql.org/mailpref/pgsql-general > > > >
What's the complete error message?
Vacuum is using maintenance_work_mem. What is your setting
maintenance_work_mem compared to your RAM size.
Igor Neyman
> -----Original Message-----
> From: akp geek [mailto:akpgeek@gmail.com]
> Sent: Wednesday, March 03, 2010 1:10 PM
> To: Joao Ferreira gmail
> Cc: pgsql-general
> Subject: Re: Auto VACUUM
>
> thank you . I changed the value to 1M and I started seeing
> the autovacuum being triggered. But I am getting the
> following message
>
> ERROR: canceling autovacuum task, is it because the table
> are getting updated and the vacuum process in place and
> vacuum happens at a later point of time
>
> Regards
>
>
>
> On Wed, Mar 3, 2010 at 1:02 PM, Joao Ferreira gmail
> <joao.miguel.c.ferreira@gmail.com> wrote:
>
>
> On Wed, 2010-03-03 at 12:46 -0500, akp geek wrote:
> > Hi All -
> >
> > I need some help from you. this question is
> in follow up
> > with my earlier questions. I turned the autovacuum
> and restarted the
> > db and the settings I have as follows. It seems the
> autovacuum process
> > has not been turned on. It's almost more than 3 hours
> I have restarted
> > my DB with following setting. I have ps -ef to see
> the proces list.
> > Is there some thing I am doing wrong.
> >
> > Can you please help?
>
>
> I'dd suggest leaving the "naptime" in the default (60 seconds)
>
> Your value is very high... too high... I'dd say....
>
> Use values around 60 seconds (never minutes)...
>
>
> >
> > Regards
> >
> > # - Query/Index Statistics Collector -
> > #track_activities = on
> > track_counts = on
> > #track_functions = none # none, pl, all
> > #track_activity_query_size = 1024
> > #update_process_title = on
> > #stats_temp_directory = 'pg_stat_tmp'
> >
> >
> >
> #-------------------------------------------------------------
> -----------------
> > # AUTOVACUUM PARAMETERS
> >
> #-------------------------------------------------------------
> -----------------
> >
> > autovacuum = on # Enable autovacuum
> subprocess? 'on'
> > # requires
> track_counts to
> > also be on.
> > #log_autovacuum_min_duration = -1 # -1
> disables, 0 logs all
> > actions and
> > # their
> durations, > 0 logs
> > only
> > # actions
> running at least
> > this number
> > # of milliseconds.
> > autovacuum_max_workers = 10 # max number
> of autovacuum
> > subprocesses
> > autovacuum_naptime = 180min # time
> between autovacuum runs
> > #autovacuum_vacuum_threshold = 50 # min number
> of row updates
> > before
> > # vacuum
> > #autovacuum_analyze_threshold = 50 # min number
> of row updates
> > before
> > # analyze
> > #autovacuum_vacuum_scale_factor = 0.2 # fraction of
> table size
> > before vacuum
> > #autovacuum_analyze_scale_factor = 0.1 # fraction of
> table size
> > before analyze
> > #autovacuum_freeze_max_age = 200000000 # maximum XID
> age before
> > forced vacuum
> > # (change
> requires restart)
> > #autovacuum_vacuum_cost_delay = 20ms # default
> vacuum cost delay
> > for
> > # autovacuum,
> in milliseconds;
> > # -1 means use
> > vacuum_cost_delay
> > #autovacuum_vacuum_cost_limit = -1 # default
> vacuum cost limit
> > for
> > # autovacuum,
> -1 means use
> > # vacuum_cost_limit
> >
> >
>
>
>
> --
> Sent via pgsql-general mailing list
> (pgsql-general@postgresql.org)
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>
>
>
>
On Thu, 2010-03-04 at 11:04 -0500, akp geek wrote: > My RAM size is 8GB. I have set the maintenance_work_mem = 500MB this > morning. > > ERROR: canceling autovacuum task with table name > > Thanks for the help You likely have a lock that is conflicting with autovacuum and it cancels itself to not conflict. Joshua D. Drake -- PostgreSQL.org Major Contributor Command Prompt, Inc: http://www.commandprompt.com/ - 503.667.4564 Consulting, Training, Support, Custom Development, Engineering Respect is earned, not gained through arbitrary and repetitive use or Mr. or Sir.
On Thu, 2010-03-04 at 11:04 -0500, akp geek wrote: > My RAM size is 8GB. I have set the maintenance_work_mem = 500MB this > morning. > > ERROR: canceling autovacuum task with table name > > Thanks for the help You likely have a lock that is conflicting with autovacuum and it cancels itself to not conflict. Joshua D. Drake -- PostgreSQL.org Major Contributor Command Prompt, Inc: http://www.commandprompt.com/ - 503.667.4564 Consulting, Training, Support, Custom Development, Engineering Respect is earned, not gained through arbitrary and repetitive use or Mr. or Sir.
On Thu, 2010-03-04 at 11:04 -0500, akp geek wrote:You likely have a lock that is conflicting with autovacuum and it
> My RAM size is 8GB. I have set the maintenance_work_mem = 500MB this
> morning.
>
> ERROR: canceling autovacuum task with table name
>
> Thanks for the help
cancels itself to not conflict.
Joshua D. Drake
--
PostgreSQL.org Major Contributor
Command Prompt, Inc: http://www.commandprompt.com/ - 503.667.4564
Consulting, Training, Support, Custom Development, Engineering
Respect is earned, not gained through arbitrary and repetitive use or Mr. or Sir.
On Fri, 2010-03-05 at 10:03 -0500, akp geek wrote: > Hi All - > > I am still having the issue, even after I turned on the > auto vaccum. I have quick question. How do I know that auto vacuum > process is running. When I restarted my database , I got the message > auto vacuum launcher started. But is there a way that I can check that > the process is really working. > u can "tail -f <postgres-log-file>" in my case I have "tail -f /var/pgsql/data/logfile" in your case it could be diferent watch for lines containing the words "vacuum", "autovacuum", "will analyse" etc etc Joao >
On Fri, 2010-03-05 at 10:03 -0500, akp geek wrote:u can "tail -f <postgres-log-file>"
> Hi All -
>
> I am still having the issue, even after I turned on the
> auto vaccum. I have quick question. How do I know that auto vacuum
> process is running. When I restarted my database , I got the message
> auto vacuum launcher started. But is there a way that I can check that
> the process is really working.
>
in my case I have "tail -f /var/pgsql/data/logfile"
in your case it could be diferent
watch for lines containing the words "vacuum", "autovacuum", "will
analyse" etc etc
Joao
>
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