Information Technology Reference
In-Depth Information
The unfiltered object list includes objects created behind the scenes by the OS. You don't usually need to monit-
or these, so instruments includes a powerful selection of filtering options that can help you focus on some ob-
jects while hiding others.
Use these options to show objects with specific names. Functionally, the various filters overlap, and there's usu-
ally more than one way to pick out individual objects from the list. It's up to you to choose the approach that
works for you.
Selecting objects with the category list
Select the Category column header to sort the object list alphabetically. Scroll down to find the
NSObject
entry, as shown in Figure 16.12. If you monitor this entry while the app is running, you see that its # Living and
# Overall count both increase steadily.
FIGURE 16.12
Using the Category column to list objects alphabetically
Selecting objects with the search field
Figure 16.13 shows an alternative solution. Type one or more class names into the search field at the top right
of the Instruments window, select the magnifying glass icon, and choose Matches Any. The main list is filtered
to show the object names you entered. Use this approach when you want to monitor a small number of related
objects.
FIGURE 16.13
Selecting objects with the search field
