Phoronix is a leading source for Linux hardware reviews, benchmarking, and open-source news. With  performance analysis, hardware testing, and coverage of the latest developments in the Linux ecosystem, Phoronix provides  insights for Linux enthusiasts, developers, and system administrators, helping them make informed decisions about hardware compatibility, performance optimization, and software selection.

Phoronix

Linux 7.0 achieves a 12% performance improvement in UDP receive stress tests on 100Gbit NICs by manually inlining the timecounter_cyc2time() function. The optimization addresses a bottleneck where the function can be called over 100 million times per second on busy servers, particularly for hardware timestamping needed by new protocols like Swift congestion control. Compiler optimizations like FDO, LTO, and PGO couldn't automatically handle this case because NIC drivers are typically shipped as modules.

Linux 7.0 Scores +12% In UDP Network Performance Test From Manually Inlining Function