LatencyMon 2.01 B201.31120 1.0

Resplendence Software Projects Sp. in Utilities \ Maintenance


LatencyMon checks if a system running Windows is suitable for processing real time audio by measuring DPC and ISR excecution times as well as hard pagefaults.


   
 

LatencyMon checks if a system running Windows is suitable for processing real time audio by measuring DPC and ISR excecution times as well as hard pagefaults. It will provide a comprehensible report and find the kernel modules and processes responsible for causing audio latencies which result in drop outs. It also provides the functionality of an ISR monitor, DPC monitor and a hard pagefault monitor. LatencyMon will display the execution time of each ISR, DPC routine and hard pagefault and will resolve them to the drivers and processes responsible for executing them. It will create a comprehensible report but it will also represent all sampled data in a detailed manner allowing you to perform in-depth analysis. Windows is not a real time operating system. All requests to the operating system are delivered on a best effort basis. There are no guarantees whatsoever that requests are delivered within a certain time frame, which are the characteristics of a real-time operating system. That is not a problem for most devices and tasks but this is bad news for audio applications (which are considered soft real-time) because they need to deliver data to the subsystem and the hardware in buffers several times per second. If one or more buffers miss their deadlines and are not delivered in time it has audible consequences which are recognized as dropouts, clicks and pops. The Windows thread disptacher (also known as scheduler) which is part of the kernel executes threads based on a priority scheme. Threads with higher priority will be given a longer execution time (also known as quantum or time slice) than threads with a lower priority. However the kernel also knows other types of units of execution known as interrupt service routines (ISRs). Devices connected to the system may interrupt on a connected CPU and cause their interrupt service routines to execute. An interrupt can occur on the same processor that an audio program is running on. Any thread that was running on the processor on which an interrupt occured will be temporarily halted regardless of its priority. The interrupt service routine (ISR) is executed and may schedule a DPC (Deferred Procedure Call) to offload an amount of work. The DPC will most likely run immediately on the same processor which means the audio application will halt until both the ISR and the DPC routines have finished execution. That is because ISRs and DPCs run at elevated IRQL which means they cannot become preempted by the thread dispatcher (scheduler). Therefore to guarantee responsiveness of the system, ISR and DPC routines should execute as fast as possible. Guidelines say that they should not spend more than 100 ?s of execution time however this is often not reached due to hardware factors beyond the control of the driver developer. If execution time gets too high, the audio program may be unable to deliver audio buffers to the hardware in a timely manner. Windows uses a concept of virtual memory which relies on the page translation system provided by the CPU. Whenever a memory address is requested which is not available in physical memory (not resident), an INT 14 will occur. The OS provided INT 14 handler will decide how to proceed next. If the page in which the address resides is known to Windows but not resident, Windows will read in the required page from the page file. That is known as a hard pagefault and can take a lot of time to complete. If the page can be read in from the hard disk cache, the price will be limited. However if it needs to physically read in the data from disk sectors this takes a lot of time. If an audio program hits a hard pagefault while it is playing it will almost certainly have audible consequences recognized as dropouts, clicks or pops.

LatencyMon 2.01 B201.31120 1.0 Maintenance software developed by Resplendence Software Projects Sp. The license of this maintenance software is freeware, the price is free, you can free download and get a fully functional freeware version of LatencyMon 2.01 B201.31120. Do not use illegal warez version, crack, serial numbers, registration codes, pirate key for this maintenance freeware LatencyMon 2.01 B201.31120. Always use genuine version that is released by original publisher Resplendence Software Projects Sp..


Similar Software

DLOCK2 2.01 Michael Paul Johnson  Misc. Utils.

DLOCK2 is a simple command line file encryption/decryption utility program that uses the free Diamond 2 Encryption Algorithm. Full source code and documentation of the algorithm and the master's thesis it is based on are included. It compiles with Gnu C++ and other compilers, so it can be adapted...

Registry Diagnostics 2.01 Registry Diagnostics  Registry Tools

Registry Diagnostics 2.01 Will scan your registry for problems and recommend steps you can takes to fix them.

ZENcast Organizer 2.0 Creative Technology Ltd.  Utilities

ZENcast Organizer 2.01.01 is the latest release of this freeware utility. It has been developed by Creative Technology Ltd. We can download this product directly from the developer's website. It contains three utilities: Zencast Organizer, Sync Manager, and Video Converter. It has been...

AR-QTM 2 qtm.sourceforge.net  Database

Apache 2.0.40 + MySQL 3.23.52 + PHP 4.2.2 + PHPBB 2.01 + phpMyAdmin 2.3.0Ready to Run on Windows 9X + NT + 2000 +XPJust setup.exe and enjoy.

AutoCAD Land Development Desktop R2 15.0 Autodesk, Inc.  Multimedia

This 2.01 service pack installs the latest updates to AutoCAD Land Development Desktop R2. In addition, this service pack fixes problems with Autodesk Civil Design R2 and TDS Survey Link in Autodesk Survey R2. Note: This patch is for the network version of AutoCAD Land Development Desktop R2.

Fusion Sendmail 2.01 Digital Fusion Ltd  Server

Sendmail is a plugin that allows you to send email directly from FileMaker databases, so you don+oOeCOaot need to rely on an external email program to send your email. The email messages can be plain text or HTML-formatted and can include attachments. Sendmail also enables you to send multiple...

Fisheye Player 2.01 I MAY Software  Presentation Tools

Fisheye Player create 360 degree Panorama,Use single shot Fish eye image. With Web/Windows Published generates Java Applet and Executable File. No Stitching needed.System Character :(1) Multiple Panoramic image supported : Fisheye,Cylindrical,spherical,PAL35/PAL53,Panoramic Mirror.(2) One Shot...

mergeOCR 2.01 SoftwareForLitSupport.com  Misc. Utils.

MERGEOCR offers an easy, repeatable, affordable utility that assembles multipage OCR text files from their single-page components. It uses an IPRO load file as a template to guide the file consolidation. MERGEOCR effectively captures best-practices with regard to OCR text file manipulation,...

Logotron 2.01 terchy.com  Miscellaneous

The simpliest program for foreign words learning and memorizing. Friendly DOS interface. The words are stored in plain text files: word (phrase) * translation You can create your own files with necessary words and translations. It is possible to change the direction of translation. New...

Chinese character matrix dot creator 2.01 Getgbchar  Miscellaneous

The project is designed for hardware engineers to generate Chinese character dot matrix of pixmap. These pixmaps can be used for showing Chinese in embeded system/enviroment such as LCD. Chinese character matrix dot creator 2.01 License - GNU General Public License (GPL)


Popular Software of Utilities - Maintenance

CardRecovery 3.50 CardRecovery  Maintenance

CardRecovery is a photo recovery software for digital memory card used by digital camera. It can effectively recover lost, deleted, corrupted or formatted photos from various memory cards. It supports most memory card types including SmartMedia, Compact Flash CF card, Secure Digital SD card,...

Wise Drivers 2.0 Hisesoft Inc.  Maintenance

Wise Drivers updates all of your system drivers with just one click. With Wise Drivers, you can easily get the latest official drivers for your machine. It supports millions of devices and the driver database is updated every day to ensure that your drivers are up to date. Features: 1. Update...

DriverEngine.com Agent 6.0 e-Software Computer Technology Co.,Ltd  Maintenance

DriverEngine.com are designed to solve malfunctions of device drivers under the Microsoft Windows operation systems. They can complete driver backup, hardware detection, device failure analysis, driver searching, driver download, driver install and driver upgrade at one time, achieving network...

Sound Drivers For Windows XP Utility 2 3 DriversForWindowsXP.com  Maintenance

Get official Sound Drivers for your Windows XP system. Sound Drivers For Windows XP Utility scans your computer for missing, corrupt, and outdated sound drivers and automatically updates them to the latest, most compatible version. Sound Drivers For Windows XP Utility saves you time and...

Realtek High Definition Audio driver R2.35 1.0 Realtek  Maintenance

The ALC882 series 7.1+2 Channel High Definition Audio codecs with UAA (Universal Audio Architecture), featuring five 24-bit stereo DACs and three 20-bit stereo ADCs, are designed for high performance multimedia PC systems. The ALC882 series incorporates proprietary converter technology to achieve...

Virtual Sound Card Driver 2.1 virtualsoundcarddriver.com  Maintenance

Virtual/fake audio driver to enhance your physical sound card driver. It also adds an icon on your system tray to let you easily switch among virtual/physical audio cards on Windows7/XP.

Visual BCD Editor 0.9.3 BoYans  Maintenance

Visual BCD is an advanced GUI version of Windows command line utility bcdedit. It is the first GUI utility to implement full access to Windows BCD. The user can view/edit every detail in a well known explorer like structure. The power of bcdedit by simple clicks and keystrokes. New Windows...

USB to Ethernet Connector 3.0 Eltima Software  Maintenance

USB to Ethernet Connector lets you connect to any USB device located on a remote PC on a local network or the Internet. You will be able to work with it as with a local USB device and applications working with it won't even see the difference. USB to Ethernet Connector works with a USB driver at...

PST to VCF 1.0 vCard Export  Maintenance

With high conversion result PST to VCF conversion tool of SysTools Software Group is the simple solution to convert Outlook contacts (.pst) file to vCard (.vcf) file. PST to VCF Converter tool easily move Outlook contacts PST file to vCard VCF file with the help of few steps. Convert PST to...

Softick CardExport for Windows Mobile 3.14 Softick  Maintenance

Softick Card Export for Windows Mobile turns Windows Mobile handheld into SD / MMC card reader. Most handheld users thought about using a memory card as an external storage device and access it without additional card reader. There is a solution Softick Card Export for Windows Mobile, an...