By allowing teams to change trace configuration remotely, we have enabled key workflows such as increasing sampling rates for suspicious A/B tests on demand, enabling higher-overhead data providers when debugging regressions, and overall fine-tuning of trace volume and contents, as our needs evolve.Profilo vastly improves the turnaround time on performance regressions by giving us the precision to understand the root cause for regressions as small as tens of milliseconds of CPU time.
With the rich telemetry from traces, we are able to build tooling to aggregate and compare CPU stack traces from release to release, making root-cause analysis of that particular type of regression something that takes less than an hour as opposed to days. Android UI Engineer The Facebook apps for Android and iOS are used by billions of people across the world. LONDON, UNITED KINGDOM RIVERHEAD, N.Y. (AP) — The New York Marine Rescue Center is releasing seals into the wild and broadcasting it online at 10:30 a.m. Through reselling, mentoring aspiring resellers, and growing a YouTube following, the couple says they’re bringing in six figures.
We would then dive deep into our monitoring telemetry. LONDON, UNITED KINGDOM In practice, this means that with a few lines of code we can collect telemetry information from a new feature, along with centralized reporting, data pipeline management, and tools to work with aggregate data.The ability to monitor for regressions and explore changes over time has been an important part of our mobile performance efforts. This allows to us investigate garbage collection and other VM-specific events and their impact on our apps. These cases couldn’t be easily replicated in our mobile device lab, which was designed to replicate more mainstream experiences. Must win.....I would say so. This inability to reproduce the state of the device and the system locally led to long turnaround times and an exhausting search through a stream of code and configuration changes.We soon realized that in order to increase our ability to diagnose issues and find opportunities for performance improvements, we needed to build a dedicated tool that could better gather and analyze much more detailed telemetry from the app as these slower interactions took place.The tool we ultimately built is called Profilo. Facebook believes in building community through open source technology. By clicking or navigating the site, you agree to allow our collection of information on and off Facebook through cookies. Unfortunately, it was often insufficient to diagnose these harder issues as we only collected durations alongside a few “proxy metrics” (e.g. Android Software Engineer This usually left us with only one possible path — to reproduce the regression locally, with profilers (Systrace and other local tools) and isolate the root cause.This last step is where a lot of investigations stalled, particularly when we found outlier regressions where only a small number of devices were experiencing a severe slowdown. We’ve created in-depth telemetry to explain a large chunk of our resource usage (CPU time), gained a much deeper understanding of our relationship with the VM, and enabled new, more intricate analyses of hard performance metrics like “app responsiveness.”As part of the open source release, we’re also releasing basic tooling to work with traces and some example analyses to give you a feel for the workflow. Facebook Marketplace: The Wild West of E-Commerce The online flea market is used by one in three people in the U.S. Facebook Inc. created an online flea market where users not only see all the bicycles, bird houses and BMWs for sale nearby, but also the names, profile photos and general locations of buyers and sellers. We have ambitious goals around delivering a delightful experience for people using Facebook and a strong belief that responsiveness and smoothness are keystones of a high-quality product experience.
However, not all regressions were easily addressed with server-driven configuration. Wake With Elias: Canucks Delete Insensitive Tweet & Story Time with Eddie Lack The former Canucks goalie joined host Nick Bondi on the latest episode of Power of the Towel. John Boyne’s latest book includes a small Zelda easter egg, despite being set in the real world. The focus on high throughput has allowed us to collect telemetry at rates of 3000 events per second or more, with minimal disruption or distortion of the underlying interaction.It also provides us with a powerful configuration system we use to enable telemetry collection from specific devices, without overburdening the apps of all users. Android Software Engineer It is so popular that more than one in three people in the U.S. use it monthly, according to Facebook. LOS ANGELES, US The Facebook apps for Android and iOS are used by billions of people across the world. Android UI Engineer BELLEVUE, US When we discovered a regression in our beta or production releases, we would immediately look for configuration or experimentation changes that isolated it. Software Engineer, Android BELLEVUE, US TEL AVIV, ISRAEL LOS ANGELES, US LONDON, UNITED KINGDOM Software Engineer, Android Explore our latest projects in Artificial Intelligence, Data Infrastructure, Development Tools, Front End, Languages, Platforms, Security, Virtual Reality, and more.