To obtain the best performance from the CICS® PA plug-in, you can manage
your data files in various ways.
The CICS monitoring
facility can produce a significant volume of output, which can produce
very large data files. Every time you download data or open a file
in the CICS PA plug-in,
you use workstation memory. The larger the data selection, or file
size, the more memory is used. Opening a large file for analysis might
considerably slow your workstation depending on the amount of memory
available. Following the suggestions below helps to manage your data
files in a more efficient way:
- Restrict the number of database records to retrieve
- The maximum number of records that are downloaded from a database
for each view or query is 10,000. You can limit the number of records
to download by clicking Window > Preferences > CICS Performance
Analyzer for z/OS and changing the number in the Preferences
dialog.
- Create csv files with 17000 records or fewer
- Be selective when creating csv files. A 17000 record csv file
is around 15 MB in size. Opening larger files increases the memory
usage and might offset the performance of your workstation. If you
have a lot of data, create multiple csv files instead of one big file.
- Divide the data between different projects
- Keeping related sets of data in different projects makes data
easier to manage. Projects that are not in use can be closed. Closing
a project frees up workstation memory.
- Save each file in a separate folder
- Every time a folder is opened, the CICS PA plug-in analyzes all
the files in the folder and saves the information in workstation memory.
If you have multiple files in a folder, more memory is used. The memory
is not released until the project is closed or until the CICS Explorer™ is closed. If each folder
contains only one file, the memory usage is kept at a minimum.