z/OS Monitoring Velocity Software, Inc. Velocity Software, Inc. is recognized as a leader in the performance measurement of z/VM and Linux on z. The Velocity Performance Suite consist of a set of tools that enable installations running z/VM to manage Linux and z/VM performance. In addition, many components of server farms can be measured and analyzed. Performance data can be viewed real-time through the use of either 3270 or a browser. The CLOUD Implementation (zPRO) component is designed for full cloud PaaS implementation as well as to extend the capabilities of the z/VM sysprog (system programmer) to the browser world. This feature moves system management to the point-and-click crowd. Archived data and reports can be kept available of long term review and reporting usine zMAP. The zVPS, formally ESALPS, components consist of: zMON (formally ESAMON - real-time display of performance data), zTCP (formally ESATCP - SNMP data collection), zMAP (formally ESAMAP - historical reporting and archiving), zVWS (formally ESAWEB - z/VM based web server), zTUNE (a subscription service), zVIEW (formally SHOWCASE - web based viewing of performance data), zPRO (new to the quality line of Velocity Software Products). Velocity continues to work with other software vendors to ensure smooth interface with or from other products such as VM:Webgateway, CA-Webgateway, EnterpriseWeb, MXG, MICS. Velocity software remains the leader and inovator in the z/VM performance, Linux performance, Managing cloud computing arenas.
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zOSMON ™ supports CICS

After providing a very simple and very fast performance monitoring solution that provided full system and job analysis, zOSMON new supports CICS using the SMF 110 record.

The primary objective of zOSMON is to provide full performance management at extremely low overhead. Including CICS in this suite met the same objective. Installations processing 100 transactions per second may not even notice any increase in the zVPS processing requirements.

Sample zview tabs on our system will show by region
and by transaction

CICS interval overhead

Velocity Software on all platforms has supported a one minute reporting interval for operational alerts and ease of performance analysis. In z/OS, there are the RMF interval setting, and a CICS interval setting for providing statistics and for providing details on inflight transactions. Analysis of CICS response time, second by second shows very degraded CICS response time during the second of statistics gathering. Thus every 60 seconds, response time will take a hit for one second (or less). This was measured in an LPAR with two virtual CPUs. The performance degradation will likely be less with a faster CPU, which can be monitored by installations with ZOSMON. Historically installations have used 15 minutes to reduce the amount of data and this processing degradation. The following was repeatable at the top of every minute with one minute CICS interval:

                 Trans  Resp    Disp   SUSP   CPU
Time     sysid   Count  Time    Time   Time   Time
-------- -----   -----  -----   -----  -----  -----
18:18:55 VSI1       32  0.019   0.013  0.006  0.010
18:18:56 VSI1       40  0.033   0.024  0.008  0.014
18:18:57 VSI1       24  0.017   0.014  0.003  0.011
18:18:58 VSI1       32  0.032   0.028  0.004  0.019
18:18:59 VSI1       30  0.034   0.021  0.013  0.015
18:19:00 VSI1       40  0.269   0.054  0.215  0.012  <----
18:19:01 VSI1       40  0.014   0.007  0.008  0.004
18:19:02 VSI1       64  0.006   0.004  0.002  0.004
18:19:03 VSI1       40  0.005   0.004  0.002  0.003
18:19:04 VSI1       16  0.002   0.002  0.001  0.002
As a repeatable measurement, it would be worth repeating this analysis on larger and faster systems.

Note that the same analysis was done with RMF intervals at 1 minute and 15 minute, and very little impact on CICS transactions could be detected.

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