Re: Clearing of temp files is very slow in pg16
| От | DINESH NAIR |
|---|---|
| Тема | Re: Clearing of temp files is very slow in pg16 |
| Дата | |
| Msg-id | PN4P287MB43813F5DB1150E4685153FA79C22A@PN4P287MB4381.INDP287.PROD.OUTLOOK.COM обсуждение исходный текст |
| Ответ на | Clearing of temp files is very slow in pg16 (Ramakrishna Reddy Nandyala <rkreddy.n@gmail.com>) |
| Список | pgsql-admin |
Hi ,
- Try increasing work_mem from 4MB.
- optimize Temp_file_limit
- Check the queries which are causing memory intensive and try to optimize them using pg_stat_statements
- Add swap space
Thanks
Dinesh Nair
From: Ramakrishna Reddy Nandyala <rkreddy.n@gmail.com>
Sent: Monday, August 4, 2025 9:39 PM
To: pgsql-admin@lists.postgresql.org <pgsql-admin@lists.postgresql.org>
Subject: Clearing of temp files is very slow in pg16
Sent: Monday, August 4, 2025 9:39 PM
To: pgsql-admin@lists.postgresql.org <pgsql-admin@lists.postgresql.org>
Subject: Clearing of temp files is very slow in pg16
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Hi Team
System details
We are using pg-16.8 on rhel 9.x
RAM-96GB
CPU-16
We have configured 25% RAM as shared buffers,50% as effective cache.we have configured 50% RAM for Huge page settings
Max connection set to 2000
Work-mem -4 mb
Maintenance work mem set to 1 GB
Issue details
1) we have an application that selects the data and will process in application and try to insert the data into an other table
During this process we are seeing so many temporary files been generated by the system,after some time we are seeing the application Connection is accumulating the memory at OS Level after reaching ~50%,we are getting Out Of Memory error and Kernel is killing the top memory consumer process ,here it is killing Postgres process that is doing the entire process.while automatic Postgres Service restart ,system status showing as activating and it is coming to Active state only after clearing of all the temporary files crated during the query running.The clearing of temp files are very slow such that it is causing unplanned outages to the system
how to fasten the Temp files removal?
How to get rid of this situation?
Any suggestions on the configuration to avoid the temp file generation
Thanks in advance
Ramakrishna
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