Logging all managed exceptions --- CDB.exe -pn LoadGenWin.exe -cf clr.txt --- You'd log all managed exceptions when something goes wrong. · CDB.exe -pn LoadGenWin.exe · .logopen /t C:\clr.log · .loadby sos mscorwks; !eeversion; sxe -c "!clrstack;...

JetstressCmd has an undocumented /report command --- which means this function is unsupported. I couldn't publish a neat command interface due to a tight schedule for this function. The program should be able to find all the arguments such as machine...

NOTE: You may see unstable/uneven latency slope failure if Jetstess cannot see stable latency slope within 10 minutes. The tuning process takes many tuning cycles until it succeeds or fails in tuning goals. It starts with the initial parameter values...

Jetstress quits a test run prematurely while attaching databases at the same time. Internally, there is unhandled JET_errDatabaseSignInUse due to a race condition. This is a known issue --- I will make available the fix in July web release. Here...

Performance counter thresholds are updated. But, there are some differences from Exchange 2003 Performance Troubleshooting Guide for some reasons. Database Disks: · Average Disk sec/Read (or I/O Database Reads Average Latency): The average should...

There is a known issue: Symptom: If you have Standards and formats to be German (Germany) or Dutch (Belgium), you will have all zeros for European numbers in all test reports as follows: LogicalDisk Avg. Disk sec/Read ...

This is a known issue in Jetstress. This is so benign that it never affects your testing in terms of correctness, performance, and security. Please, train yourself to ignore this benign error until I can make the fix available in a later web release...

Question: I have uneven distribution of users across storage groups. Storage group 1 has 700 GB with 739 users and storage group 2 has 350 GB with 261 users. Can I run multiple instances of JetstressWin.exe or JetstressCmd.exe (one instance per...

--- Excerpted from Jetstress CHM help documentation --- There are options to size the test databases using the percentage of the maximum storage capacity, and target I/O throughput (IOPS) by the percentage of the maximum throughput capacity of the...

AdPlus hang-mode creates a directory in the current directory (or the output directory if specified) called Hang_Mode__Date_mm-dd-yyyy__Time_HH-MM-SS. This means you can continue to run the same ADPlus command line repeatedly without losing your data...

1. Jetstress or Load Generator would send ‘offline’ Watson reports to the admin queue --- which is located at “ %SystemRoot%\PCHEALTH\ERRORREP\QSignoff ”--- you can send them through a file transfer service on your own. 2. The customer uses eventvwr...

Exchange Server Jetstress (08.01.0075) March 7, 2007. Verify the performance and stability of the disk subsystem before putting the Exchange server into a production environment. • 64-bit download • 32-bit download Here...

Months ago, I got a storage vender's feedback that his job will become a lot easier if he can define additional performance counters for his storage hardware to the performance log. I decided to provide him with a convenient way to add new performance...

Here is a list of issues that are all fixed in the March release (08.01.0075 build): Exchange 2003 database engine (ese.dll ) should have 500 MB and 900 MB database cache size min and max. DataGridView: System.InvalidOperationException...

Exchange Load Generator (08.01.0061) February 9, 2007. Perform benchmarking, pre-deployment validation, and stress testing tasks that introduce various types of workloads into a test (non-production) Exchange messaging system. Simulate the delivery...

Exchange Server Jetstress (08.01.0038) January 3, 2007. Verify the performance and stability of the disk subsystem before putting the Exchange server into a production environment. • 64-bit download • 32-bit download

A: There are two sets of latency thresholds defined in the Jetstress xml configuration file: One is strict for a test short than or equal to 6 hours. The other is lenient for a test longer than 6 hours (it is also called a stress test). Excerped...

Jetstress enables " Use storage volumes on NAS " when you Exchange 2003 SP1 ESE binaries (of which must be later than or equal to 6.5.7104.0) Drive letters used for the storage of Exchange 2003 database and log files are not presented as physical or...

HP Blade System and Exchange 2003 Storage Performance (updated 2006-02-13) White Paper covers the best practices for deploying Exchange 2003 server on HP BladeSystem as well as the results of performance validation tests. HP EVA 5000 and Exchange...

JetStress 7795 has the first two issues fixed. http://www.microsoft.com/downloads/details.aspx?familyid=94b9810b-670e-433a-b5ef-b47054595e9c 1. The test report may incorrectly state the test has failed in the header of the test report --- JetStress...

The tuning process will also try to adjust the following ratios with insert, delete, and replace option mixes. If it cannot reach optimal mix, the test would still continue with the best parameters it can find. Following are the additional guidelines...

Jetstress will not load performance counters after applying a service pack or hotfix There is another issue that Database Performance counters can be broken for Exchange after using JetstressUI . In certain cases when Exchange Server was installed...

To correctly set the JET_paramLogBuffers value, JetStress uses the following information For Exchange 2000, Exchange 2000 SP1, Exchange 2000 SP2, or Exchange 2000 SP3, set the value to 512. For Exchange 2003, Exchange 2003 SP1, or Exchange 2003...

I have come across System.InvalidOperationException: Cannot read Instance : F:\MDB\SG1 . From memory dump analysis with the .NET perf. team, the main cause was either one of these: Some logical disks are not fully ready to use in the Windows...

Some tests showed that using 70% or 80% of the disk capacity can show the realistic performance characteristic. The achieved IO is up to 100% more than what you can really get when 80% of the disk is utilized in terms of its capacity. Refer to a TechNet...