On Wed, Jun 21, 2006 at 08:00:06PM -0400, Ana Paula Centeno wrote: > Hi, > I am experiencing a 10% cpu overhead when running a program that uses > the openipmi library. > > I have the same overhead using ipmitool. Is that expected?
Possibly. For IPMI controllers that don't generate interrupts on command completion, the driver has to poll to find the command completion. Recent drivers include a low-priority kernel thread that does this polling to provide adequate response time to commands. The thread only runs while commands have been issued and are outstanding on the controller. In most circumstances it takes < 1% CPU to do this, but if you're issuing a lot of commands, and if other processes don't need the CPU, yes, it'll use it. Thanks, Matt -- Matt Domsch Software Architect Dell Linux Solutions linux.dell.com & www.dell.com/linux Linux on Dell mailing lists @ http://lists.us.dell.com Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Openipmi-developer mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/openipmi-developer
