Re: Swap on postgres master server

2018-10-16 Thread Nicola Contu
Ok thanks I will try that. But do you know if there is any way to avoid this? vm.swapiness? or anything on the postgres conf? Il giorno mar 16 ott 2018 alle ore 15:17 Bob Jolliffe ha scritto: > I guess you can run swapoff (followed by swapon). That will free up > whatever is currently swapped.

Re: Swap on postgres master server

2018-10-16 Thread Bob Jolliffe
I guess you can run swapoff (followed by swapon). That will free up whatever is currently swapped. Beware if the system is actively swapping then swapoff can take some time. But it seems not in your case. On Tue, 16 Oct 2018 at 10:48, Nicola Contu wrote: > > No it is not probably used, because

Re: Swap on postgres master server

2018-10-16 Thread Nicola Contu
No it is not probably used, because I can't find it in any way as I said. I run your commands : [root@usnyh-cmd1 ~]# vmstat 1 procs ---memory-- ---swap-- -io -system-- --cpu- r b swpd free buff cache si sobibo in cs us sy id wa st 3 2 750

Re: Swap on postgres master server

2018-10-16 Thread Laurenz Albe
Nicola Contu wrote: > we are running Postgres 10.5 with master slave replication. > > This server is on Centos 7 and the strange thing is that we see a lot of swap > usage : > > [root@usnyh-cmd1 ~]# free -m > totalusedfree shared buff/cache > available > Me

Re: Swap on postgres master server

2018-10-16 Thread Hans Schou
Are you sure that swap is used actively? Maybe it had just been used during backup or something. Look after SwapIn/SwapOut (si/so) it should be '0' $ vmstat 1 procs ---memory-- ---swap-- -io -system-- --cpu- r b swpd free buff cache si sobibo

Swap on postgres master server

2018-10-16 Thread Nicola Contu
Hello, we are running Postgres 10.5 with master slave replication. These are our custom params archive_command = 'pgbackrest --stanza=cmdprod archive-push %p' # command to use to archive a logfile segment archive_mode = on # enables archiving; off, on, or always checkpoint_completion_target = 0.7