increase of xact_commit vs txid_current

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От reg_pg_stefanz@perfexpert.ch
Тема increase of xact_commit vs txid_current
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Msg-id 9c38fdbe-0972-07e5-6cfd-0367b1bfe5b9@perfhope.info
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Ответы Re: increase of xact_commit vs txid_current
Список pgsql-general
Hi,

I am confused, the documentation says for pg_stat_database
    xact_commit      Number of transactions in this database that have 
been committed
and somewhere else
     txid_current()    get current transaction ID, assigning a new one 
if the current transaction does not have one

I would have naively expected txid_current() be more or less in line 
with xact_commit,  or  increasing faster as txid_current() should be 
global but xact_commit is per database.

However xact_commit seems to increases faster than txid_current(),  what 
am I missing? Are there commits that do not increase the xid number?

Thanks
Stefan




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