CPDT Benchmark〉Storage﹣Memory﹣RAМ﹣SD-Card﹣Disk﹣SSD
#belaruslivesmatterCPDT(跨平台磁盘测试)是一种性能基准测试应用程序,可测量永久存储(内部存储器/ NAND / NVMe / UFS / SD卡)和系统..
基本信息
- 更新日期:
- 包名:
- com.Saplin.CPDT
- 版本:
- 2.3.7
- 大小:
- 11M
- 类型:
- 工具
- 平台:
- 安卓
- 评分:
- 发布日期:
- 2020-07-03
- 价格:
- 免费
- 开发者:
- Maxim Saplin
应用更新
◉ Galaxy S20, S20+, S20 Ultra added to comparison
◉ Bug fixes & Libs update
CPDT Benchmark〉Storage﹣Memory﹣RAМ﹣SD应用截图
CPDT Benchmark〉Storage﹣Memory﹣RAМ﹣SD应用简介
#belaruslivesmatter
CPDT (Cross Platform Disk Test) is a performance benchmarking app that measures I/O speed of permanent storage (internal memory/NAND/NVMe/UFS/SD card) and system memory (RAM).
This app has Windows, macOS and Linux v̲e̲r̲s̲i̲o̲n̲s̲ which allow to consistently run tests across devices and operating systems. They can be download at the web site: https://maxim-saplin.github.io/cpdt_results/?download
In-app results database makes it possible to compare your phone’s performance to other Android smartphones (e.g. Samsung Galaxy Note 10, Xiaomi Redmi 7 etc.) and a wide variety of hardware (iPhones, Macs, Windows PCs, Android TV Players etc.)
The benchmarking suite includes the following 5 tests:
◉ Permanent storage tests
┊
╰┄◎ Sequential write
┊
╰┄◎ Sequential read
┊
╰┄◎ Random write(4KB block)
┊
╰┄◎ Random read (4KB block)
◉ RAM test
┊
╰┄◎ Memory copy
– test results are given as throughput values measured in MB/s (megabytes per second).
Various settings are available in Options menu and let users control:
◉ Test file size
┊
╰┄◎ 0.5GB ┄◎ 1GB ┄◎ 2GB ┄◎ 4GB ┄◎ 8GB ┄◎ 16GB
◉ Write buffering
┊
╰┄◎ On ┄◎ Off
◉ In-memory file caching
┊
╰┄◎ On ┄◎ Off
For sequential tests the app builds time-series graphs, for random tests – histograms. Test results can be exported to CSV for further analysis (each row containing block position in the test file and throughput measured).
How is CPDT different from other apps? Most popular benchmarks focus on CPU/GPU (such as Geekbench, AnTuTu) and completely ignore storage performance.
Storage and memory benchmarks rarely let users change any settings and limited to specifying test file size. Controlling buffering or caching is not possible (e.g Androbnech) or require device reloading (e.g. A1 SD).
Caching is a mechanism which significantly influences test results. If it is ON test results are affected by RAM speeds and it’s not possible to isolate permanent storage performance in such tests. Cold read scenarios (e.g. device boot or first-time application start) can not be described by cached reads. Same situation is with buffering which affects write tests. Buffering uses RAM for temporary storing data before persisting it to storage.
CPDT deals with both caching and buffering and by default those are OFF which makes it possible to consistently measure and compare permanent storage performance across devices and operating systems.
Why is storage and memory performance important? It directly affects the level of “perceived” performance. UI freezes can be described in many cases by stutters at storage level. E.g. displaying a loaded web page in browser when it requests data from disk, scrolling pictures in gallery app (imaging scrolling thousands of them), or going down an Instagram feed (previously loaded images will be requested from cache stored on disk).
Chromebook users can use this app after enabling Google Play. In order to access SD/Memory Card the app must be granted “Storage permission” in Google Play setting of Chrome OS.
!OTG Support is NOT guaranteed! If you plug an external card reader or USB flash drive into your device, it might work or it might not. E.g. Samsung Galaxy S8 with Android 8 and Note 10 with Android 10 work fine. Xiaomi Mi8SE (Android 9), Meizu 16th (Android 8.1) and LG Nexus 5x (Android 6) don’t work (though you’ll still be able to see the drive in the system). Why is that? Android OS doesn’t have a consistent model working with externally connected storage devices. Some device manufacturers do a good job (such as Samsung) by properly mounting the device and making it available via default API (Context.getExternalFilesDir()). Others require tricks or implementing manufacture specific APIs. Android 10 promises to put an end to this mess.
The project is open-source and you’re welcome to visit it’s page at GitHub:
https://github.com/maxim-saplin/CrossPlatformDiskTest
中文翻译
#belaruslivesmatter
CPDT(跨平台磁盘测试)是一种性能基准测试应用程序,可测量永久存储(内部存储器/ NAND / NVMe / UFS / SD卡)和系统内存(RAM)的I / O速度。
该应用程序具有Windows,macOS和Linux版本,可在设备和操作系统之间一致地运行测试。可以从以下网站下载它们:https://maxim-saplin.github.io/cpdt_results/?download
应用内结果数据库使您可以将手机的性能与其他Android智能手机(例如,三星Galaxy Note 10,小米Redmi 7等)以及各种硬件(iPhone,Mac,Windows PC,Android TV Player等)进行比较。
基准测试套件包括以下5种测试:
◉永久存储测试
┊
╰┄◎顺序写
┊
╰┄◎顺序阅读
┊
╰┄◎随机写入(4KB块)
┊
╰┄◎随机读取(4KB块)
◉RAM测试
┊
╰┄◎记忆复制
-测试结果以MB / s(兆字节/秒)为单位的吞吐量值给出。
“选项”菜单中提供了各种设置,使用户可以控制:
◉测试文件大小
┊
╰┄◎0.5GB┄◎1GB┄◎2GB┄◎4GB┄◎8GB┄◎16GB
◉写缓冲
┊
╰┄◎开┄◎关
◉内存中文件缓存
┊
╰┄◎开┄◎关
对于顺序测试,该应用可构建时间序列图,对于随机测试,可构建直方图。测试结果可以导出到CSV进行进一步分析(每行包含测试文件中的块位置和所测量的吞吐量)。
CPDT与其他应用程序有何不同?最流行的基准测试集中在CPU / GPU(例如Geekbench,AnTuTu)上,而完全忽略了存储性能。
存储和内存基准测试很少允许用户更改任何设置,并且仅限于指定测试文件的大小。无法控制缓冲或缓存(例如Androbnech)或需要重新加载设备(例如A1 SD)。
缓存是一种会显着影响测试结果的机制。如果开启,则测试结果会受RAM速度的影响,并且无法在此类测试中隔离永久存储性能。缓存读取无法描述冷读取方案(例如,设备启动或首次启动应用程序)。缓冲会影响写测试,情况也是一样。缓冲使用RAM临时存储数据,然后再将其持久存储到存储中。
CPDT处理高速缓存和缓冲,默认情况下为OFF,这使在设备和操作系统之间一致地测量和比较永久存储性能成为可能。
为什么存储和内存性能很重要?它直接影响“感知”性能的水平。 UI冻结在很多情况下可以通过存储级别的停顿来描述。例如。当浏览器从磁盘请求数据时,在浏览器中显示已加载的网页,在图库应用中滚动图片(以图像方式滚动数千张图片),或在Instagram feed中关闭(以前加载的图像将从存储在磁盘上的缓存中请求)。
启用Google Play后,Chromebook用户可以使用此应用。为了访问SD /存储卡,必须在Chrome操作系统的Google Play设置中为该应用授予“存储权限”。
!不保证会支持OTG!如果将外部读卡器或USB闪存驱动器插入设备,则可能会起作用,也可能无法起作用。例如。具有Android 8的Samsung Galaxy S8和具有Android 10的Note 10可以正常工作。小米Mi8SE(Android 9),魅族16th(Android 8.1)和LG Nexus 5x(Android 6)不起作用(尽管您仍然可以在系统中看到驱动器)。这是为什么? Android OS没有与外部连接的存储设备一起使用的一致模型。一些设备制造商通过正确安装设备并通过默认API(Context.getExternalFilesDir())使设备可用,可以很好地完成工作(例如Samsung)。其他人则需要技巧或实施制造特定的API。 Android 10承诺将结束这一混乱局面。
该项目是开源的,欢迎您访问GitHub上的页面:
https://github.com/maxim-saplin/CrossPlatformDiskTest