number of wal file is not reduced.

Hi,

I have postgres 9.6 running server on centos 7, the number of wal file
in pg_xlog directory is above 4000 so to save some disk space, I
thought of reducing to 100.

but there is no reduction in numbers.

Please not that there is no replication is configured, the server is
independent.

What I am missing here.

• max_wal_size = '3GB'
• checkpoint_timeout = '15min'
• checkpoint_completion_target=0.8
• log_checkpoints=on
• wal_keep_segments=100 (initially it was set to 4000)

Please suggest when the number of wal files will be reduced to approx 100.

regards,
Atul