Copyright © TIBCO Software Inc. All Rights Reserved
Copyright © TIBCO Software Inc. All Rights Reserved


Chapter 6 Monitoring TIBCO Object Service Broker : Option A – General

Option A – General
Option A (General) displays statistics accumulated since the system last started.

 
HRNADMA1 OSTARSRV GENERAL STATISTICS 2012JUL09 15:55:38
MSG TRAFFIC DESTINATION LOGICAL PHYSICAL
SEND 10901 SUPV 80 GET 30805 READ 608
RECV 10902 COMM 0 PUT 193 WRITE 15
CHPT 1 GET4K 11171 REDO 124
LOGON 10 FILE 0 FRE4K 12 JRNL 0
LOGOFF 9 APPL 0 DEFC 0 INDBT 0
STEAL 0
MAXUSR 20 CTAB 10858 CTAB 86
MAXCON 1 PH0 0 RULE 1696 RULE 152
USERS 0 PH1 10794 SYNC 192
PH2 96 GETF 13
POOL 1 SERVER 0 PUTF 12 RES PAGE MANAGER
GETBUF 36397 OPER 12 FREBFQ 11800
LOCK 0 AGINGQ 0
UNLOCK 0 LRU2Q 189
SNAP 0 CHKPTQ 1
ENTER-REFRESH PF2-DELTA DISPLAY

 
General Statistics Screen Fields
The fields on this screen are divided into the following groups:
 
Shows the number of physical I/Os or re-acquisitions employed to complete the work being done
RES PAGE MANAGER
In general, the basis for maintaining a cache is to minimize the amount of physical I/O activity when accessing data pages. When RPM receives a page request, there are two possibilities: the page exists in the cache, or it does not. If the page exists, RPM returns it to the requestor. If it does not, a buffer in the cache is reserved and a physical I/O is initiated to read the page into the buffer.
RPM handles the caching of data pages using the LRU-K page replacement algorithm, which is based on the page replacement policy that, in most database systems, is known as “least recently used” (LRU). LRU‑K overcomes the limitations of the traditional LRU algorithm by maintaining the history of the last K references to a page. The K in LRU-K is a parameter where K>=2 (K=1 is valid but ignored because it is the same as the traditional LRU algorithm). RPM uses a value of 2 for K. LRU-2 gives improved performance over LRU-1 and is more adaptive to changes in access patterns than LRU-K for K greater than 2.
MSG TRAFFIC
 
The maximum number of online and batch user sessions allowed at one time, as specified by the MAXUSERS Data Object Broker parameter.
The high water mark for all connected sessions, including online and batch user sessions, operator, and external and peer server sessions.
DESTINATION
 
LOGICAL
 
PHYSICAL
 
RES PAGE MANAGER
 

Copyright © TIBCO Software Inc. All Rights Reserved
Copyright © TIBCO Software Inc. All Rights Reserved