If you want a date stamp, you can change the ps ax stuff to look like this: date +"%Y-%m-%d %H:%M:%S"|tr "\n" ":";ps ax|grep postgres:|grep -v grep|wc -l On Mon, Aug 9, 2010 at 4:21 PM, Scott Marlowe <scott.marlowe@xxxxxxxxx> wrote: > On Fri, Aug 6, 2010 at 6:19 PM, Tomeh, Husam <HTomeh@xxxxxxxxxxxxx> wrote: >> I was wondering if we can query/obtain the high-water mark of number of sessions or connections reached in a Postgres database. Is there a view or command that can provide this information. The pg_stat_database shows the current number of connections, but not the high-water mark a database had reached. > > It's a pretty easy thing to approximate with a shell script. > > while true;do ps ax|grep postgres:|grep -v grep|wc -l ;sleep 10;done > > connects.log & > > then just tail the connects.log file. It's a dirty hack and it'll be > a few counts over due to counting the postmaster and a few other > processes, but it'll give you a good idea of what your system is > doing. Add a date in there if you need to know the time it was > happening. > -- To understand recursion, one must first understand recursion. -- Sent via pgsql-admin mailing list (pgsql-admin@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-admin
