icm/HTTP/server_cache_<xx>/size_MB

Use

This parameter sets the size of the ICM Server Cache in megabytes.

Structure

Work area

Internet Communication Manager, SAP Web Dispatcher

Unit

Integer value

Default value

400 (MB)

Dynamically changeable

No

Integration

Value Range and Syntax

You can set values between 10 MB and 4000 (4GB).

Integration

Rule of Thumb for Calculating (Virtual) Memory Requirement:

memory_needed = 2 * (2N + U) * M + S * 1000000 Bytes

where:

N =icm/HTTP/server_cache_<x>/max_entries

M =icm/HTTP/server_cache_<xx>/max_name_len

U =icm/HTTP/server_cache_<xx>/max_ufo_entries

S =icm/HTTP/server_cache_<xx>/memory_size_MB

The memory required consists of:

  • The space required for the (2 * (2N + U) * M) index; the multiplications by 2 come from the implementation. In Unicode systems, the requirement is approximately twice as high.

  • The space required for the actual data in the cache (images, style sheet, and so on) (S * 1000000 bytes, because S is specified in megabytes).