ClearCase Version Importer performance report: Rational Team Concert 4.0.6 release

Authors: Masa Koinuma Cunxia Sun
Build basis: Rational Team Concert 4.0.6

Page contents

The ClearCase Version Importer is a new feature of Rational Team Concert 4.0.5. It can migrate all the versions in any branches in Rational ClearCase in a single operation, and the version branching is also replicated in Rational Team Concert source control. This document provides performance data that you can refer to.

The performance result gives you can idea about how long it takes to import files and folders using the importer, although this example is not a benchmark. Your performance also varies with the speed of the server host, database type, and the client host that you use.

The performance report of 4.0.5 release is available at ClearCase Version Importer Performance Report in Rational Team Concert 4.0.5. This document also provides some considerations to migrate the data efficiently.

For more information about the ClearCase Version Importer, see Migrating data with the ClearCase Version Importer.

Topology

In this test environment, all the softwares are installed and configured on a single host except for ClearCase Servers. The Version Importer commands are run on the same host as well. Here is the single server topology variables.

Metadata Variable	Value
Operating System	Windows 7 64bit
CPU	Intel Core i7-2600 CPU @ 3.4GHz (8-core)
Memory	8GB
Network	100Mbps Ethernet
Database Management System	DB2 10.1
Application Server	Tomcat 7 (3GB max heap)
License Management System	Trial
User Management System	Tomcat
ClearCase Client Version	8.0.1.2
Other technologies	None

Methodology

The export command of the Version Importer is run against the sub-folders of VOBs listed in the result table, and duration of the command is measured.

Then, the intermediate data is imported to a new component of a new stream on the local CCM server, and the duration of the command is measured. The user mapping is not configured.

Results

Note: The table shows an average time to import or export per version. The number varies by test case because there are several other factors that contribute to the duration (such as cleartext pool cache or the number of files and directories in single Rational Team Concert component).

Single view migration

Folder Name	# of Elements (Folders/Symbolic Links/Files)		# of File versions	Export Duration (in seconds)		Average Export time per version in seconds	Import Duration (in seconds)		Average Import time per version in seconds
\atria\lib\tbs	85	(0/3/82)	10,709	1h00m	(3,616s)	0.34	32m	(1,920s)	0.18
\applets\ucc	3,277	(589/40/2,598)	120,161	10h06m	(36,360s)	0.30	7h38m	(27,480s)	0.23
\Java\Windows	16,230	(2,282/1/13,947)	27,920	11h06m	(39,960s)	1.43	54m	(3,240s)	0.12
\Java\HPUX	18,340	(1,925/89/16,326)	32,722	14h24m	(51,840)	1.58	1h26m	(5,160s)	0.16
\design	31,922	(3,880/341/27,701)	110,649	110h51m	(399,060s)	3.6	14h54m	(53,640s)	0.48

Multiple view migration

Folder Name	# of views	# of Elements (Folders/Symbolic Links/Files)		# of File versions	Export Duration	Average Export time per version in seconds	Import Duration	Average Import time per version in seconds
\nucor\client	1	4,769	(651/25/4093)	158,063	22h20m	0.51	11h05m	0.25
\nucor\client	3	6,126	(1,953/75/4,098)	156,525	36h07m	0.83	17h51m	0.41

Deployment

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