Re: pg_stat_reset_slru(name) doesn't seem to work as documented
От | Tomas Vondra |
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Тема | Re: pg_stat_reset_slru(name) doesn't seem to work as documented |
Дата | |
Msg-id | 20200502140529.h5afkubywcwkbfuu@development обсуждение исходный текст |
Ответ на | Re: pg_stat_reset_slru(name) doesn't seem to work as documented (Tomas Vondra <tomas.vondra@2ndquadrant.com>) |
Ответы |
Re: pg_stat_reset_slru(name) doesn't seem to work as documented
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Список | pgsql-hackers |
On Sat, May 02, 2020 at 02:27:33PM +0200, Tomas Vondra wrote: >On Fri, May 01, 2020 at 07:10:23PM +0900, Atsushi Torikoshi wrote: >>Hi, >> >>When I tried to reset a counter in pg_stat_slru using >>pg_stat_reset_slru(name), >>not only the specified counter but all the counters were reset. >> >> postgres=# SELECT * FROM pg_stat_slru ; >> name | blks_zeroed | blks_hit | blks_read | blks_written | >>blks_exists | flushes | truncates | stats_reset >> >>------------------+-------------+----------+-----------+--------------+-------------+---------+-----------+------------------------------- >> async | 3 | 0 | 0 | 3 | >> 0 | 0 | 0 | 2020-05-01 17:36:26.073433+09 >> clog | 0 | 56 | 0 | 0 | >> 0 | 0 | 0 | 2020-05-01 17:36:26.073433+09 >> commit_timestamp | 0 | 0 | 0 | 0 | >> 0 | 0 | 0 | 2020-05-01 17:36:26.073433+09 >> (snip) >> >> >> postgres=# SELECT pg_stat_reset_slru('clog'); >> >> >> postgres=# SELECT * FROM pg_stat_slru ; >> name | blks_zeroed | blks_hit | blks_read | blks_written | >>blks_exists | flushes | truncates | stats_reset >> >>------------------+-------------+----------+-----------+--------------+-------------+---------+-----------+------------------------------- >> async | 0 | 0 | 0 | 0 | >> 0 | 0 | 0 | 2000-01-01 09:00:00+09 >> clog | 0 | 0 | 0 | 0 | >> 0 | 0 | 0 | 2020-05-01 17:37:02.525006+09 >> commit_timestamp | 0 | 0 | 0 | 0 | >> 0 | 0 | 0 | 2000-01-01 09:00:00+09 >> (snip) >> >> >>Attached a patch. >> > >Yeah, that memset is a left-over from some earlier version of the patch. >Thanks for the report and patch, I'll push this shortly. > Pushed. Thanks for the report. -- Tomas Vondra http://www.2ndQuadrant.com PostgreSQL Development, 24x7 Support, Remote DBA, Training & Services
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