There are two places to look into to speed up it a little. Please try them and adjust according to your environment as they work different in environments:
- Microsoft.ResourceManagement.Service.exe.config -> section <resourceManagementService externalHostName="fimservice.adatum.net" />. You can add some additional properties here - for example try adding maxSimultaneousSynchronizationRequests
with any number (default is 6). So you would have for example: <resourceManagementService externalHostName="fimservice.adatum.net" maxSimultaneousSynchronizationRequests="50" />
More info here: FIM 2010 Service Configuration - miiserver.exe.config -> section <resourceSynchronizationClient/>. You can add here delayUpdateAcknowledgements with "true" value (default: false) and change exportRequestsInProcessMaximum
(default: 50) and aggregationThreshold (default: 1000) attributes. For example: <resourceSynchronizationClient
delayUpdateAcknowledgements ="true" exportRequestsInProcessMaximum="100" aggregationThreshold="2000"/>
Some info here: Export to Portal Extremely Slow
Those switches and attributes vary (they depend on what version of FIM you have), so the best option is to check those two files above and there is a help section about attributes and how they work - for example in miiserver.exe.config: