how to caculate resident shared memory size?

hi,all could you tell me how to caculate resident shared memory size? thank you.

sqs wrote: > > hi,all > could you tell me how to caculate resident shared memory size? Mark Stock is correct about onmonitor if the engine is online. You can also use onstat -g seg and check the size of the class 'R' segment which is the resident segment. In addition the UNIX command ipcs will report the various segment sizes (SEGSZ column) the engine is using: ipcs -ma | head -3; ipcs -ma | fgrep informix The resident segment is the first segment defined for the server in question, the one whose key ends in 4801. If you have multiple servers the first four digits of the key indicate the SERVERNUM of the server to which the segments belong (0x5256 + hex(SERVERNUM)). Also note that a few versions of some UNIX systems will not report all segments owned by group informix but user root if you run ipcs as informix. So if you start your engine as root you may have to run ipcs as root. If you are trying to determine the resulting resident size of various ONCONFIG parameter settings before bringing an engine online there is a calculation in the Informix Administrator's Guide you can use. The manual section also explains which ONCONFIG parameters affect the size of the resident segment. Art S. Kagel