Privacy and Security Notice

Limit on recovery of lost messages

In case of server crash, all messages from logging clients that are still logging messages will be lost. In future, CMLOG will provide a way to save these messages which then can be merged into the centralized database by a simple utility.

Name/Description	Value	Where
CMLOG_CLNT_PORT	8909	cmlogConfig.h
CLient Daemons run at this UDP port.
CMLOG_MIN_KEY_PAGE	10	cmlogConfig.h
Minimum number of keys on page.
CMLOG_PAGE_SIZE	4096	cmlogConfig.h
Database page size.
CMLOG_CLNT_PIPE	/pipe/cmlog_1	cmlogConfig.h
The pipe device on vxworks .
CMLOG_CLNT_PIPE	/tmp/cmlog_ip	cmlogConfig.h
The named pipe on Unix machines.
CMLOG_NUM_PROC_THREADS	10	cmlogConfig.h
Number of threads to process incoming I/O messages.
CMLOG_NUM_SVC_PROC	2	cmlogConfig.h
Number of processes to process query messages.
CMLOG_DSHMEM_SIZE	80 k	cmlogConfig.h
Size of a shared memory holding logging messages.
CMLOG_CSHMEM_SIZE	20 k	cmlogConfig.h
Size of a shared memory holding querying messages.
CMLOG_DBASENAME_SIZE	128	cmlogConfig.h
Maximum size of database file names.

Table 1: Most of static parameters for cmlog system.

Note: Linux uses clone system call to implement pthread. If cmlogServer is compiled using pthread on linux, limit CMLOG_NUM_PROC_THREADS to a small number.