Overview

The following tables give an overview of the number of address spaces, processes, and threads used by z/OS® Explorer. More details on the numbers presented here can be found in the next sections:

Table 1 gives a general overview of the key resources used by the z/OS Explorer started tasks. These resources are allocated only once. They are shared among all z/OS Explorer clients.

Table 1. Common resource usage
Started task	Address spaces	Processes	Threads
JMON	1	1	4
RSED	1	3	17
RSEDx	(a) 2 + 2	2 + 3	3 + 15

Note: (a) There are two APF authorized address spaces and at least 1 RSE thread pool, which consists of two address spaces. Refer to Address space count to determine the actual number of RSE thread pool address spaces.

Table 2 gives a general overview of the key resources used by requisite software. These resources are allocated for each z/OS Explorer client that invokes the related function.

Table 2. User-specific requisite resource usage
Requisite software	Address spaces	Processes	Threads
Interactive ISPF Gateway	1	1	2
Legacy ISPF Gateway	1	2	4
APPC	1	1	2

Table 3 gives a general overview of the key resources used by each z/OS Explorer client when executing the specified function. Non-numeric values, such as ISPF, are a reference to the corresponding value in Table 2.

Table 3. User-specific resource usage
User action	Address spaces User ID	Processes User ID	Threads User ID RSEDx JMON
Logon	-	-	-	20	1
Timer for idle timeout	-	-	-	1	-
Search	-	-	-	1	-
Expand PDS(E)	ISPF	ISPF	ISPF	-	-
Open data set	ISPF	ISPF	ISPF	1	-
TSO command	ISPF	ISPF	ISPF	-	-
z/OS UNIX shell	1	1	1	6	-

Note: ISPF can be substituted by APPC.