MMAP vs POSIX : PostgreSQL Dynamic Shared Memory
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[postgres@stagdb pg_dynshmem]$ ls -lrt total 8 -rw------- 1 postgres postgres 6928 Feb 17 16:36 mmap.2106693104 [postgres@stagdb pg_dynshmem]$ pwd /u01/pgsql/10/pg_dynshmem |
There is a file in pg_dynshmem sub-directory under PostgreSQL data directory. But what is that file? The answer is here, But before we understand that, we will have to understand some basics. If...
