Question & Answer
Question
What are the memory consumption implications of the performance improvements?
Answer
In this release, commands that access all VOBs mounted at the VOB mount point execute substantially faster than they did in previous releases. Examples of such commands are:
- ls -l /vobs
- ls -F /vobs
However, each long-lived vobrpc_server process consumes about 2 MB of private memory (its address space will be larger, about 9 MB, because of its use of shared libraries). Thus on VOB hosts where, for example, 500 VOBs are mounted, 1 GB of additional memory may be consumed by all such vobrpc_server processes.
Before migrating to a version of ClearCase that provides this performance improvement, estimate and acquire sufficient additional memory for your VOB hosts to avoid performance degradations.
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Document Information
Modified date:
24 October 2018
UID
swg21977039