![]() ![]() I want to get some more data points, so I had a look at sbc-bench results available both for 32-bit Raspbian and 64-bit Debian Buster with the processor overclocked to 1850 Mhz and running Linux 4.19 in both cases. However, in some cases, there are no benefits of switching to a 64-bit OS with VPN performance with either OpenVPN or Wireguard being virtually the same with the default 32-bit Raspbian OS.īut the firewall works much better with Aarch64 (557k packets/s) than when the software is compiled with armv7 (268k packets/s).īenchmarks results can differ greatly depending on compile select flags, but sadly Matteo did not provide the full command lines used to build the OS and samples. Benchmarks closer to real use cases such as SHA1 or audio encoding do confirm the improved performance although to a lesser extent, but still significant. We already wrote that 64-bit Arm (Aarch64) boosted performance by 15 to 30% against 32-bit Arm (Aarch32) several years ago, but Matteo Croce decided to try it out himself on Raspberry Pi 4 board first running benchmarks on Raspbian 32-bit before switching to a lightweight version of Debian compiled as aarch64.ĭhrystones is much faster with the 64-bit OS, namely 50% faster, but as a synthetic benchmark, its use is limited. ![]() There’s however one issue with using the 64-bit version of Chromium installed by default: the WidevineCDM library is not available making it impossible to play streaming video from premium services such as Netflix or Disney+.The first Raspberry Pi board with a 64-bit Arm processor was Raspberry Pi 3 Model B, and all new models including the latest Raspberry Pi 4 come with four Arm Cortex-A 64-bit cores.īut in order to keep backward software compatibility with the original Raspberry Pi and Raspberry Pi 2, the Raspberry Pi foundation decided to keep provided 32-bit OS image, so nearly everybody is now running a 32-bit OS on 64-bit hardware, and Eben Upton famously claimed it did not matter. ![]() But with the first stable release, video acceleration works through Chromium and VLC, GPU acceleration works through Mesa, and hopefully, some of the performance regressions are resolved, so it can perform more or less as well, or in some cases better, than the 32-bit version. When I tested Raspberry Pi OS 64-bit on Raspberry Pi 4 in June 2020 I actually noted some performance regressions against Raspberry Pi 32-bit OS, and at the time there were some known issues such as the lack of hardware video decoding in VLC and Chromium. ![]() Some of the main reasons to finally release a 64-bit version include improved software compatibility with many closed-source applications only available for arm64, and some open-source ones not fully optimized for the armhf port, some performance benefits, and the ability for a process to make use of the full 8GB RAM, removing the 3GB limit when using LPAE (Large Physical Address Extension) on 32-bit operating systems. The Raspberry Pi Foundation has now officially released Raspberry Pi OS 64-bit about two years after the first beta version was released.ĭespite some potential performance benefits from using 64-bit code instead of 32-bit, the Raspberry Pi Foundation has resisted moving too quickly to a 64-bit OS because if it would create two separate worlds for their earlier 32-bit boards like Raspberry Pi 2 or Raspberry Pi Zero, and the newer 64-bit boards starting with Raspberry Pi 3 onwards and may confuse users besides the extra workloads. ![]()
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