performance problems with iseries applications
DESCRIPTION
In this Webcast, iSeries performance expert Mike Boadway of MB Software, used your enrollment survey responses to drive the focus of the content. Many performance problems start with applications and jobs that create a lot of unnecessary work for your AS/400 for iSeries...you'll learn why it's important to solve the underlying software issues of any performance problem before you go out and spend a lot of money on new hardware.TRANSCRIPT
Interactive Response Time
69% - Interactive response time is usually OK, but random slowdowns occur. Can’t find cause – solution appears to be a $100,000 interactive feature card.
Daily GANTT Chart -
Interactive
CPU (seconds) by Subsystem
Number of I/Os by
Subsystem
Skipped Records by Job/User
Skipped Records by File/Fields
Long Running Batch Jobs
57% - CPU used less than 50%, but batch jobs take a long time & don’t use CPU efficiently. Have been told that a bigger system with more CPU is needed.
Daily GANTT Chart – Long
Batch
Temporary Disk Space Jumps
48% - Disk space jumps from 70 to 90%, could be from temp space used by jobs but have not been able to prove which job is doing it.
Disk Navigator – Size of QTEMP by Job
Long Nightly Processing
44% - Night processing runs long, one CL program calls 100s of other programs and it takes 6 hrs to run.
Job Overview – One
Process
Job Overview – Several Processes
Application Analyzer – By Program
Function
Application Analyzer – By
OS/400
Function
Application Analyzer – Open/Close
Java & JDBC Killing System
43% - New web app uses Java & JDBC, when web lookup pages are hit, user waits 2 minutes. System was fine until new app went live.
QUSRWRK CPU Seconds
QUSRWRK Skipped Records
Waiting for Pick Slips
43% - Overall CPU is only 30% used, yet users wait 6 minutes for pick slips to print. When batched, it takes 45 minutes to start printing, which delays product shipping.
CPU 30% Used, Jobs in
Queue
# of Jobs by Job and User
Jobs Waiting in Job Queues
Waiting 250 Minutes, Runs 1 Second
Job Logs Wasting Resources
40% - 500,000 pages of job logs generated every day, logs rarely used, wasting disk space, CPU & I/O.
# of Pages by Queue, Job &
User
Job Description & End Code
Message Logging
Job Runs 30,000 Times
38% - Our batch job runs 30,000 times per day, consumes 1 CPU second each time it runs. Ends up being 30% of CPU consumed, constantly spikes system all day.
CPU by Job Name
# Jobs by Job Name
HA Can’t Keep Up
30% - Journal receivers are 10 GB per day, HA can’t keep up.
Journal Analyze
r
Q&A
To receive MB Software’s FREE performance evaluation:
1. Register at http://www.mb-software.com 2. Download and install software on AS/400 3. Call (800) 713-5034 to schedule your free performance review session
What To Expect:
After allowing performance data to accumulate for one full business day, you will log into a secure area of MB Software’s Web site and have a conference call to discuss our findings and how you can gain performance improvements. It’s that easy!
Questions & Answers