I'm having difficulty resolving the memory overhead of my iOS application. Specifically, the "Activity Monitor" Instrument reports that my app is using 158 MB "Real Mem". Note that I am manually launching the app on device and viewing "All Processes".
When I run the app in the "Allocations" Instrument and take a VM snapshot it also reports the app is using 158 MB in the "Dirty Size" column of the VM Summary, so both tools seem to report consistent values.
3. When I run a simple 'HelloWorld' app, I do indeed see that the "Activity Monitor" reports 32 MB less then the "Allocations" instrument in this case. Any thoughts on why I don't see this same discrepancy reported in my actual app as well?
The amount of dirty memory that region consumes can depend on a number of factors (did you launch in Xcode or Instruments, Debug or Release, did you attach to a running process instead, etc...) So it's possible your initial comparison wasn't exactly "apples to apples", and you might be chasing down a ghost. I would focus on what Allocations and VM Tracker are telling you, and you can safely discount the "Performance tool data" region as it is not under your control.
To clarify, I am running a debug build, outside of XCode. So if I launch my app on the device (via tapping on app icon), and connect the Activity Monitor to monitor 'All Processes', can I expect that the reported 'Real Mem' will be in the same ballpark as the VM Summary 'Dirty Size' total (minus the the 32 MB "Performance Tools data")?
Begin by entering a 5-digit zip code of interest in the box. The tool displays the actual level of Affordable Connectivity Program (ACP) enrollment in the zip code area, the predicted level of ACP enrollment, and how well the area is performing in comparison to the norm. The difference between predicted and actual enrollment is an ACP performance measure. The ACP Risk Score tells users, on a scale from 0 to 100, the level of risk in a zip code area for service disconnection when ACP sunsets. The higher the score, the greater the risk.
Its a great tool and I believe it is as close to real Boeing OPT (onboard performance tool). If performance figures is important to you then I would really recommend it. It covers 737-800 variant with other 737 NG variants to be supported in future.
In reality flight crews will use their onboard performance tool on their iPads or EFBs to calculate take-off/landing performance figures. Having similar tools for flight sim vastly increases that immersion level.
I have found VPT works very well with PMDG 737 - I have compared it to what PMDG EFB calculates and the difference is minor. As you said it all depends on what sources these apps use the data from so some alterations can be expected.
Choosing a long term care facility is an important decision. The Department of Public Health has developed the Nursing Home Survey Performance Tool, which provides information about individual nursing homes in Massachusetts to serve as a transparent resource for consumers who are making decisions about their health care.
The Division inspects nursing homes at least every 9-15 months to assess compliance with federal standards of care. This includes adequacy of staffing, quality of care, and cleanliness of facilities. Also, as necessary, we investigate complaints and serious incidents occurring within nursing homes.
Our reports are technical in nature, so they can sometimes difficult for consumers to interpret. In an effort to make survey results more available and understandable, we created a tool called Search for a Nursing Home.
We hope that this tool assists the public in making informed choices when considering a nursing home for placement. We caution that no one document can adequately assess the appropriateness of a nursing home for a potential placement
The information provided in the Survey Performance Tool for Nursing Homes can not substitute for a personal visit and thorough review of a nursing home when choosing a facility for yourself or a loved one. Consumers should always visit each facility they are considering and spend time touring the facility and talking with residents, families and staff members.
The feedback will only be used for improving the website. If you need assistance, please contact the Division of Health Care Facility Licensure and Certification. Please limit your input to 500 characters.
The Performance Test tool is a single asset performance test that can be performed from 10 different locations around the world. It allows the performance of any URL to be tested and measured. The results returned will give a breakdown of the loading times and HTTP response headers.
The Performance Test tool can be used to evaluate the performance of a single asset to see where improvements can be made. Consider adding KeyCDN to your stack to significantly reduce the latency of your website.
The icing on the cake of this already extremely powerful tool is that you can upload collected profile data with a single click and share the resulting link with your teammates (or anyone really). This makes it easier to collaborate on performance issues, especially in a distributed work environment.
The inspection capabilities of the UI are powerful and let the user inspect every bit of the performance data. You might want to follow this detailed UI Tour presentation created by the Performance team at Mozilla to learn more about all available features.
To make customization easier some presets are available and the Web Developer preset is selected by default. The profiler can be also used for profiling Firefox itself and Mozilla is extensively using it to make Firefox fast for millions of its users. The WebDeveloper preset is intended for profiling standard web pages and the rest is for profiling Firefox.
There are many more powerful features available and you can learn more about them in the extensive documentation. And of course, just like Firefox itself, the profiler tool is an open source project and you might want to contribute to it.
The Valeo compressors performance calculation software enables you to select the best Valeo compressor that fits your needs.Fill in the form with the caracteristics of your air-conditioning system, and the software will calculate the performances of the most adequate Valeo compressor for you.
Runtime performance is how your page performs when it's running, as opposed to loading. The following tutorial teaches you how to use the DevTools Performance tool to analyze runtime performance.
The skills you learn in this tutorial are useful for analyzing loading, interactivity, and visual stability of your web content, which are also key indicators for Core Web Vitals. Each of the Core Web Vitals represents a distinct facet of the user experience, is measurable in the field, and reflects the real-world experience of a critical user-centric outcome. You can see these Core Web Vitals in the Performance tool.
Open the Sluggish Animation demo page in your InPrivate tab or window. To do that, right-click the link and then select Open link in InPrivate window. You'll profile this page, which shows a variable number of icons moving up and down. For more information about InPrivate, see Browse InPrivate in Microsoft Edge
To better display a difference between the optimized and unoptimized versions, click the Remove elements button a few times and try again. If you add too many blue icons, you could max out the CPU, and then you might not observe a major difference in the results for the two versions.
When you ran the optimized version of the page, the blue icons move faster. Why is that? Both versions are supposed to move the icons the same amount of space in the same amount of time. Take a recording in the Performance tool to learn how to detect the performance bottleneck in the unoptimized version.
The CPU chart is displayed along the top. The colors in the CPU chart correspond to the colors in the Summary panel, at the bottom of the Performance tool. The CPU chart shows that these regions make up a large area, meaning that the CPU was maxed out during the recording. Whenever the CPU is maxed out for long periods, that's an indicator that the page is not performing well.
Hover over the CPU or NET charts. DevTools shows a screenshot of the page at that point in time. Move your mouse left and right to replay the recording. The action is called scrubbing, and it's useful for manually analyzing the progression of the performance recording.
Another handy tool is the Frame Rendering Stats overlay, which provides real-time estimates for FPS as the page runs. The Frame Rendering Stats overlay is not required for this tutorial but may provide helpful insight.
When no events are selected, the Summary panel shows you a breakdown of activity. The page spent most of the time rendering. Since performance is the art of doing less work, your goal is to reduce the amount of time spent doing rendering work.
Expand the Main section. DevTools shows you a flame chart of activity on the main thread, over time. The x-axis represents the recording, over time. Each bar represents an event. A wider bar means that event took longer. The y-axis represents the call stack. When events are stacked on top of each other, it means the upper events caused the lower events.
When a red triangle is displayed at the top right of an event, it's a warning that there might be an issue related to the event. The Animation Frame Fired event occurs whenever a requestAnimationFrame() callback is run.
The problem with the unoptimized code is that, in each animation frame, it changes the style for each icon, and then queries the position of each icon on the page. Because the styles changed, the browser doesn't know if each icon position changed, so it has to re-layout the icon in order to compute the new position.
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