Google Using AutoFDO On Linux Meant Up To 12% Less Cycles Spent Within The Kernel
Google is not only leveraging link-time optimizations (LTO) and profile-guided optimizations (PGO) for maximizing compiler-based efficiencies of their kernel images but also auto feedback directed optimizations. AutoFDO relies upon CPU hardware counters with a sampling based profile for driving feedback to the compiler for better optimizing the binaries. AutoFDO uses data collected by Linux's perf subsystem with hardware counters and using that information for making more informed decisions regarding optimizations. More details on AutoFDO can be found via this Wiki page.
AutoFDO has the benefit of not needing specialized builds in the first place, unlike PGO, for collecting the profile information. But AutoFDO obviously still requires a run of the program in order to collect the samples.
- Login or register to post comments
- Printer-friendly version
- 2714 reads
- PDF version
More in Tux Machines
- Highlights
- Front Page
- Latest Headlines
- Archive
- Recent comments
- All-Time Popular Stories
- Hot Topics
- New Members
digiKam 7.7.0 is releasedAfter three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. |
Dilution and Misuse of the "Linux" Brand
|
Samsung, Red Hat to Work on Linux Drivers for Future TechThe metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. |
today's howtos
|
Recent comments
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago
1 year 11 weeks ago