Office Server Search Gatherer Projects Test

As already mentioned, the indexing service will start a program called the Gatherer, which is a program that will try to open the content that should be indexed. Using an iFilter, the Gatherer reads the content as Unicode characters, converts the characters into words, identifies words that are worth indexing, and stores them in the content indexes.

For each content index, this test reports critical performance statistics revealing the content processing ability of the gatherer.

Target of the test : A Microsoft SharePoint Server

Agent deploying the test : An internal agent

Outputs of the test : One set of results for each content index on the Microsoft SharePoint server that is being monitored

Configurable parameters for the test
Parameters Description

Test period

This indicates how often should the test be executed.


The host for which the test is to be configured.


The port at which the host server listens.

Measurements made by the test
Measurement Description Measurement Unit Interpretation

Documents added

Indicates the number of document additions per second.




Indicates the number of filtered documents which returned an error per second.


A low value is typically desired for this measure.


Indicates the total number of times that access to a document has been retried.


A high value of this measure indicates that the gatherer is attempting to access a document numerous times, without success. You should check the gatherer logs and identify the problem document. Then ensure that it has the correct extension and that you have the correct iFilter for it.

Incremental crawls

Indicates the number of incremental crawls currently in progress.



Waiting documents

Indicates the current queue size of unprocessed documents in the gatherer.


A high value of this measure could indicate a processing bottleneck on the gatherer.

If this measure returns the value 0 on the other hand, it could indicate that the gatherer is idle.