Caching Compiler (RECC) CppCon 2024 September 19, 2024 Shivam Bairoliya Software Engineer© 2024 Bloomberg Finance L.P. All rights reserved. What is RECC? ● Remote Execution Caching Compiler (RECC) ○ Open source build tool that wraps compiler commands and optionally forwards them to a remote build execution service ○ Encompasses the capabilities of both ccache and distcc ○ Supports remote linking linking and caching ● Designed to share caches across diverse toolchains ○ Works with many compiler toolchains (GCC, Clang, Solaris CC) ○ Supports multiple operating systems (Linux, macOS, Solaris)

Go runtime related problems in TiDB production environment About me ● Arthur Mao(毛康力), Senior Engineer@PingCAP ● TiDB core developer (top3 contributor) ● GitBook about golang internals (@tiancaiamao) IO is ready => goroutine wake up == 4.3ms ○ Sometime even 10ms+ latency here! ○ The time spend on runtime schedule is not negligible ● When CPU is overload, which goroutine should be given priority? Analysis longer to be scheduled ● The runtime scheduling does not consider priority ● CPU dense workload could affect IO latency Conclusion Part II - Memory control ● Go Runtime ○ Allocated from OS (mmaped)

company. Ⓡ © 2021 Apex.AI, Inc. Igor Bogoslavskyi Testing the compilability of the code at runtime© 2021 Apex.AI, Inc. Errors have a high cost, so rigorous testing is a must We use increasingly test_halving.cpp image: Flaticon.com Compiler image: Flaticon.com Test binary GoogleTest ✅ flags© 2021 Apex.AI, Inc. Proposed testing pipeline image: Flaticon.com Compiler image: Flaticon.com Test binary does image: Flaticon.com Test binary GoogleTest StaticTest Fixture ✅ image: Flaticon.com Compiler image: Flaticon.com test_halving.cpp flags image: Flaticon.com test_compile_1.cpp image: Flaticon

create and reuse any number of different binaries (for different config- urations like architectures, compiler versions, etc.) for any number of different versions of a package, using exactly the same process issue tracking (for ques- tions and support, reporting bugs and suggesting feature requests and improvements) at https://github.com/conan-io/ conan 1.2 Decentralized package manager Conan is a decentralized of binaries, one for each different platform and configuration: operating system, architecture, compiler, build type, etc. These binaries can be created and uploaded to a server with the same commands

create and reuse any number of different binaries (for different config- urations like architectures, compiler versions, etc.) for any number of different versions of a package, using exactly the same process issue tracking (for ques- tions and support, reporting bugs and suggesting feature requests and improvements) at https://github.com/conan-io/ conan 1.2 Decentralized package manager Conan is a decentralized of binaries, one for each different platform and configuration: operating system, architecture, compiler, build type, etc. These binaries can be created and uploaded to a server with the same commands

create and reuse any number of different binaries (for different config- urations like architectures, compiler versions, etc.) for any number of different versions of a package, using exactly the same process issue tracking (for ques- tions and support, reporting bugs and suggesting feature requests and improvements) at https://github.com/conan-io/ conan 1.2 Decentralized package manager Conan is a decentralized of binaries, one for each different platform and configuration: operating system, architecture, compiler, build type, etc. These binaries can be created and uploaded to a server with the same commands

create and reuse any number of different binaries (for different config- urations like architectures, compiler versions, etc.) for any number of different versions of a package, using exactly the same process issue tracking (for ques- tions and support, reporting bugs and suggesting feature requests and improvements) at https://github.com/conan-io/ conan 1.2 Decentralized package manager Conan is a decentralized of binaries, one for each different platform and configuration: operating system, architecture, compiler, build type, etc. These binaries can be created and uploaded to a server with the same commands

create and reuse any number of different binaries (for different config- urations like architectures, compiler versions, etc.) for any number of different versions of a package, using exactly the same process issue tracking (for ques- tions and support, reporting bugs and suggesting feature requests and improvements) at https://github.com/conan-io/ conan 1.2 Decentralized package manager Conan is a decentralized of binaries, one for each different platform and configuration: operating system, architecture, compiler, build type, etc. These binaries can be created and uploaded to a server with the same commands

virtualizer such as 6OVF support was originally introduced with VirtualBox 2.2 and has seen major improvements with every version since. 31 1 First steps VirtualBox. VirtualBox makes OVF import and export distributions can be set up simply by installing the right packages - normally, these will be the GNU compiler (GCC), GNU Make (make) and packages containing header files for your kernel - and making sure that for Linux guests and only for copying files from the host to the guest.3 Removable media: remember runtime changes If this is checked, VirtualBox will save the state of what media has been mounted between

Virtualization Format (OVF).6 6OVF support was originally introduced with VirtualBox 2.2 and has seen major improvements with every version since. 30 1 First steps OVF is a cross-platform standard supported by many distributions can be set up simply by installing the right packages - normally, these will be the GNU compiler (GCC), GNU Make (make) and packages containing header files for your kernel - and making sure that “Shared Clipboard” menu item in the “Devices” menu of the virtual machine. Removable media: remember runtime changes If this is checked, VirtualBox will save the state of what media has been mounted between