Re: thoughts on "prevent wraparound" vacuum

2019-07-20 Thread Michail Nikolaev
Hello. >- Which version of postgres is this? Newer versions avoid scanning > unchanged parts of the heap even for freezing (9.6+, with additional > smaller improvements in 11). Oh, totally forgot about version and settings... server_version 10.9 (Ubuntu 10.9-103) So, "don't vacuum all-frozen

Re: thoughts on "prevent wraparound" vacuum

2019-07-20 Thread Andres Freund
Hi, On 2019-07-20 15:35:57 +0300, Michail Nikolaev wrote: > Currently I am working a lot with cluster consist a few of big tables. > About 2-3 TB. These tables are heavily updated, some rows are removed, new > rows are inserted... Kind of typical OLTP workload. > > Physical table size keeps mostl

thoughts on "prevent wraparound" vacuum

2019-07-20 Thread Michail Nikolaev
Hello. Currently I am working a lot with cluster consist a few of big tables. About 2-3 TB. These tables are heavily updated, some rows are removed, new rows are inserted... Kind of typical OLTP workload. Physical table size keeps mostly stable while regular VACUUM is working. It is fast enough t