Re: Dynamically adding shared memory segs

Martin Berns wrote: > > Bill Weaver schrieb: > > > > Today for some reason we've added 5 shared memory segments dynamically. It almost never happens > > that we even have 1 added since I've worked to size our initial segment to avoid this. How can > > I tell what is causing us to add so many all of a sudden? > [snip] > > Run 'onstat -g ses' and have a look at the 'total memory' column. This may indicate who is using > the additional memory. Remember, sessions don't free memory by themselves: So if there is a big > difference between 'total memory' and 'used memory' you should think about running 'onmode -F' > every x minutes/hours by cron. Don't do that! If you have a one-off allocation of virtual segments, then free them with a one-off onmode -F. If you have regular allocation of virtual segments, then tune the SHMVIRTSIZE & SHMADD parameters. Cheers, -- Mark. +----------------------------------------------------------+-----------+ |Mark D. Stock - Informix SA http://www.informix.com |//////// /| |mailto:mdstock@informix.com http://www.informix.com/idn |///// / //| |http://www.iiug.org +-----------------------------------+//// / ///| | Tel: +27 11 807 0313 |If it's slow, the users complain. |/// / ////| | Fax: +27 11 807 2594 |If it's fast, the users keep quiet.|// / /////| |Cell: +27 83 250 2325 |Therefore, "No news: travels fast"!|/ ////////| +----------------------+-----------------------------------+-----------+