Iis Active Sessions Performance Counters

Microsoft Windows IT Pro Center. Get the inside scoop on the latest Windows 1. Register for live webcasts or join our Ask Microsoft Anything AMA sessions for exclusive access to Microsoft engineers, product specialists, and community experts. Iis Active Sessions Performance Counters For IisPerformance Tuning for SMB File Servers. Do not enable any services or features that your file server and clients do not require. These might include SMB signing, client side caching, file system mini filters, search service, scheduled tasks, NTFS encryption, NTFS compression, IPSEC, firewall filters, Teredo, and SMB encryption. Ensure that the BIOS and operating system power management modes are set as needed, which might include High Performance mode or altered C State. Ensure that the latest, most resilient, and fastest storage and networking device drivers are installed. Copying files is a common operation performed on a file server. Windows Server has several built in file copy utilities that you can run by using a command prompt. You must be a member of the Administrators group on the IIS server or a member of the Performance Logging group to retrieve valid data from the following counters. Describes information about Visual Studio 2010 Service Pack 1 SP1. Additionally, this article lists the fixed issues and added technology enhancements in. SQL Server, and most other products, generate the counters all the time, no matter if there are listeners or not ignoring the x startup option. Robocopy is recommended. Introduced in Windows Server 2. R2, the mt option of Robocopy can significantly improve speed on remote file transfers by using multiple threads when copying multiple small files. We also recommend using the log option to reduce console output by redirecting logs to a NUL device or to a file. When you use Xcopy, we recommend adding the q and k options to your existing parameters. The former option reduces CPU overhead by reducing console output and the latter reduces network traffic. SMB performance tuning. File server performance and available tunings depend on the SMB protocol that is negotiated between each client and the server, and on the deployed file server features. The highest protocol version currently available is SMB 3. Windows Server 2. Windows 1. 0. You can check which version of SMB is in use on your network by using Windows Power. Shell Get SMBConnection on clients and Get SMBSession FL on servers. SMB 3. 0 protocol family. SMB 3. 0 was introduced in Windows Server 2. Windows Server 2. R2 SMB 3. 0. 2 and Windows Server 2. SMB 3. 1. 1. This version introduced technologies that may significantly improve performance and availability of the file server. For more info, see SMB in Windows Server 2. Important Note. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly. CONSULTING TRAINING. PERFORMANCE TUNING. Mastering Index Tuning Live Class, 3 Days Mastering Query Tuning Live Class, 3 Days Mastering Server Tuning with Wait. MSDN Magazine Issues and Downloads. Read the magazine online, download a formatted digital version of each issue, or grab sample code and apps. R2 2. 01. 2 and Whats new in SMB 3. SMB Direct. SMB Direct introduced the ability to use RDMA network interfaces for high throughput with low latency and low CPU utilization. Whenever SMB detects an RDMA capable network, it automatically tries to use the RDMA capability. However, if for any reason the SMB client fails to connect using the RDMA path, it will simply continue to use TCPIP connections instead. All RDMA interfaces that are compatible with SMB Direct are required to also implement a TCPIP stack, and SMB Multichannel is aware of that. SMB Direct is not required in any SMB configuration, but it s always recommended for those who want lower latency and lower CPU utilization. For more info about SMB Direct, see Improve Performance of a File Server with SMB Direct. SMB Multichannel. SMB Multichannel allows file servers to use multiple network connections simultaneously and provides increased throughput. For more info about SMB Multichannel, see Deploy SMB Multichannel. SMB Scale Out. SMB Scale out allows SMB 3. This activeactive configuration makes it possible to scale file server clusters further, without a complex configuration with multiple volumes, shares and cluster resources. The maximum share bandwidth is the total bandwidth of all file server cluster nodes. The total bandwidth is no longer limited by the bandwidth of a single cluster node, but rather depends on the capability of the backing storage system. You can increase the total bandwidth by adding nodes. For more info about SMB Scale Out, see Scale Out File Server for Application Data Overview and the blog post To scale out or not to scale out, that is the question. Performance counters for SMB 3. The following SMB performance counters were introduced in Windows Server 2. SMB 2 and higher versions. Log the performance counters to a local, raw. Buffetti Biglietti Da Visita Software. It is less expensive to collect all instances by using the wildcard character, and then extract particular instances during post processing by using Relog. SMB Client Shares. These counters display information about file shares on the server that are being accessed by a client that is using SMB 2. If you re familiar with the regular disk counters in Windows, you might notice a certain resemblance. That s not by accident. The SMB client shares performance counters were designed to exactly match the disk counters. This way you can easily reuse any guidance on application disk performance tuning you currently have. For more info about counter mapping, see Per share client performance counters blog. SMB Server Shares. These counters display information about the SMB 2. SMB Server Sessions. These counters display information about SMB server sessions that are using SMB 2. Turning on counters on server side server shares or server sessions may have significant performance impact for high IO workloads. Resume Key Filter. These counters display information about the Resume Key Filter. SMB Direct Connection. These counters measure different aspects of connection activity. A computer can have multiple SMB Direct connections. The SMB Direct Connection counters represent each connection as a pair of IP addresses and ports, where the first IP address and port represent the connections local endpoint, and the second IP address and port represent the connections remote endpoint. Physical Disk, SMB, CSV FS performance counters relationships. For more info on how Physical Disk, SMB, and CSV FS file system counters are related, see the following blog post Cluster Shared Volume Performance Counters. Tuning parameters for SMB file servers. The following REGDWORD registry settings can affect the performance of SMB file servers Smb. Credits. Min and Smb. Credits. Max. HKLMSystemCurrent. Control. SetServicesLanman. ServerParametersSmb. Credits. Min. HKLMSystemCurrent. Control. SetServicesLanman. ServerParametersSmb. Credits. Max. The defaults are 5. These parameters allow the server to throttle client operation concurrency dynamically within the specified boundaries. Some clients might achieve increased throughput with higher concurrency limits, for example, copying files over high bandwidth, high latency links. Tip. You can monitor SMB Client SharesCredit Stalls Sec to see if there are any issues with credits. Additional. Critical. Worker. Threads. HKLMSystemCurrent. Control. SetControlSession ManagerExecutiveAdditional. Critical. Worker. Threads. The default is 0, which means that no additional critical kernel worker threads are added. This value affects the number of threads that the file system cache uses for read ahead and write behind requests. Raising this value can allow for more queued IO in the storage subsystem, and it can improve IO performance, particularly on systems with many logical processors and powerful storage hardware. Tip. The value may need to be increased if the amount of cache manager dirty data performance counter CacheDirty Pages is growing to consume a large portion over 2. IOs. Max. Threads. Per. Queue. HKLMSystemCurrent. Control. SetServicesLanman. ServerParametersMax. Threads. Per. Queue. The default is 2. Increasing this value raises the number of threads that the file server can use to service concurrent requests. When a large number of active connections need to be serviced, and hardware resources, such as storage bandwidth, are sufficient, increasing the value can improve server scalability, performance, and response times.