Re: pg_multixact/members growing

2018-05-23 Thread Alvaro Herrera
On 2018-May-23, Tom Lane wrote: > Tiffany Thang writes: > > Where do I find pg_controldata? I could not locate it on the file system. > > Hmm, should be one of the installed PG executables. > > > pg_clog/ or pg_subtrans/ or pg_multixact/offsets/ are getting larger too > > but by only a few hun

Re: pg_multixact/members growing

2018-05-23 Thread Tom Lane
Tiffany Thang writes: > Where do I find pg_controldata? I could not locate it on the file system. Hmm, should be one of the installed PG executables. > pg_clog/ or pg_subtrans/ or pg_multixact/offsets/ are getting larger too > but by only a few hundreds MBs. This is consistent with the idea th

Re: pg_multixact/members growing

2018-05-23 Thread Tiffany Thang
Thanks Tom and Thomas. Where do I find pg_controldata? I could not locate it on the file system. pg_clog/ or pg_subtrans/ or pg_multixact/offsets/ are getting larger too but by only a few hundreds MBs. This is not a replicated system. How do I tell if a system is aggressively running "wraparou

Re: pg_multixact/members growing

2018-05-22 Thread Thomas Munro
On Wed, May 23, 2018 at 7:49 AM, Tom Lane wrote: > Tiffany Thang writes: >> Our pg_multixact/members directory has been growing to more than 18GB over >> the last couple of months. According to the documentation, the files in >> there are used to support row locking by multiple transactions and w

Re: pg_multixact/members growing

2018-05-22 Thread Tom Lane
Tiffany Thang writes: > Our pg_multixact/members directory has been growing to more than 18GB over > the last couple of months. According to the documentation, the files in > there are used to support row locking by multiple transactions and when all > tables in all databases are eventually scanne