[PERFORM] Suspicious top output
Hello, i have a postgresql server running and from time to time it gets painfully slow. When this happens i usually connect to the server and run a top command, the output i get is filled with lines like the following 71872 pgsql1 40 48552K 42836K sbwait 1:41 4.79% postgres Are those connections that were not closed or something like that? should i worry? Thanks in advance, as always yours trully Rafael -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
Re: [PERFORM] Suspicious top output
Rafael Barrera Oro wrote: Hello, i have a postgresql server running and from time to time it gets painfully slow. When this happens i usually connect to the server and run a top command, the output i get is filled with lines like the following 71872 pgsql1 40 48552K 42836K sbwait 1:41 4.79% postgres Are those connections that were not closed or something like that? This looks like FreeBSD; sbwait state is socket buffer wait, and guessing from the CPU usage the process seems to be talking to another process. should i worry? Don't know. Are you sure all client processes disconnect properly from the database? -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
Re: [PERFORM] Suspicious top output
On Tue, 22 Apr 2008, Rafael Barrera Oro wrote: Hello, i have a postgresql server running and from time to time it gets painfully slow. The usual information you should always include when posting messages here is PostgreSQL and operating system versions. When this happens i usually connect to the server and run a top command The other thing you should fire up in another window is vmstat 1 to figure out just what's going on in general. The great thing about those is you can save them when you're done and easily analyze the results later easily, which is trickier to do with top. 71872 pgsql1 40 48552K 42836K sbwait 1:41 4.79% postgres Some searching found this interesting suggestion from Darcy about things stuck in sbwait: http://unix.derkeiler.com/Mailing-Lists/FreeBSD/performance/2004-03/0015.html -- * Greg Smith [EMAIL PROTECTED] http://www.gregsmith.com Baltimore, MD -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
