Maximum number of databases per test is increased to 100 for Exchange 2010 ESE binaries.(Log checksums from different ESE instances are calculated in parallel) Calculations for log checksums are now multithreaded.Jetstress now works correctly when there's a Logical Disk performance counter problem. Databases and logs can be placed on the same volume. Instead of using Logical Disk performance counters, MSExchange Database I/O counters are used for I/O measurement.Database duplication is now multicast, which reduces the time to prepare databases for Jetstress testing.
Exchange 2010 mailbox I/O profile is updated, including 32-kilobyte (KB) page size, average database read size, average database write size, and average log write size.CHM file still installs with the tool, its content is basically a link to the online documentation.īut of course there are some other improvements and minor bug fixes: Well, for this new version (.003), although the. The previous version of JetStress introduced a help file (Microsoft Exchange Server Jetstress.chm) that replaced the old Word document with instructions. To further complement the results provided by JetStress, it is recommended that you also use System Monitor and Event Viewer to validate that the performance criteria is met or exceeded and that no errors are logged. In the Exchange mailbox profile test scenario, you can specify the number of mailbox users and I/O per seconds per mailbox to simulate the profiled Exchange mailbox load.Performance of database transactions (the performance test becomes a stress test when its duration is longer than six hours) In the disk subsystem throughput test scenario, you can do the following types of tests:the Exchange.There are two categories of test scenarios: disk subsystem throughput and mailbox profile. The newest version of JetStress supports Exchange 2003, 20, but for legacy Exchange (20) it is recommended that you use Jetstress 2007. JetStress 2010 simulates disk I/O loads produced by a specific number of users, thus helping verifying the performance and stability of the storage subsystem prior to putting a Microsoft Exchange Server into production. But then again, the storage subsystem is still a crucial piece of the overall Exchange performance, that's why tools like JetStress are so important. Once again, Microsoft has significantly dropped down the I/O throughput requirements for Exchange Server 2010 when comparing with previous versions.
0 kommentar(er)
