Can "journalCommitInterval" parameter help to improve IO performance?

[golangnewbie]

The default value  is 100 and the value range for it is 2 - 300.

Is value 300 better performance than 100 while the reminding conditions are the same ??

What is the size of journal buffer policy? thanks.

[Nat]

journalCommitInterval is more to do with the consistency of the data in case of power loss or crash. Setting it to lower value helps improve the throughput if you use getLastError with j : true. You should also consult www.mongodb.org/display/DOCS/Journaling+Administration+Notes.