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Autovacuum issues with truncate and create index ... - Mailing list pgsql-admin

From Baptiste LHOSTE
Subject Autovacuum issues with truncate and create index ...
Date
Msg-id 771E373C48A2FC4381D0A96D112154F3E7951A@DB3PRD0610MB356.eurprd06.prod.outlook.com
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In response to Re: Autovacuum issues with truncate and create index ...  (Baptiste LHOSTE <blhoste@alaloop.com>)
Responses Re: Autovacuum issues with truncate and create index ...  (Albe Laurenz <laurenz.albe@wien.gv.at>)
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Hi,

We are still trying to fix our issue and we found following logs :

2013-01-17 09:55:01 CET LOG:  automatic vacuum of table "flows.public.agg_t1213_incoming_a6_dst_port_and_proto_f5":
indexscans: 1 
    pages: 0 removed, 136547 remain
    tuples: 0 removed, 4044679 remain
    system usage: CPU 3.21s/5.21u sec elapsed 2005.15 sec

2013-01-17 10:12:50 CET LOG:  automatic vacuum of table "flows.public.agg_t1214_outgoing_a1_src_net_f5": index scans: 1
    pages: 59886 removed, 37828 remain
    tuples: 1645338 removed, 3750874 remain
    system usage: CPU 3.01s/4.08u sec elapsed 1015.75 sec

How is it possible that first task took twice the time of the second without any tuples to remove ?

Baptiste

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