Minor Optimization Coming For AMD Athlon XP Era Systems Running Linux
Minor Optimization Coming For AMD Athlon XP Era Systems Running Linux Written by Michael Larabel in Hardware on 10 August 2026 at 06:28 AM EDT. Add A Comment A minor performance optimization is on the way to the Linux kernel for roughly two decade old CPUs that have SSE but lack SSE2. Among those CPUs to benefit are the AMD Athlon XP series, some early Sempron models, and some Intel Celeron and Pentium III models.
- ▪Minor Optimization Coming For AMD Athlon XP Era Systems Running Linux Written by Michael Larabel in Hardware on 10 August 2026 at 06:28 AM EDT.
- ▪Add A Comment A minor performance optimization is on the way to the Linux kernel for roughly two decade old CPUs that have SSE but lack SSE2.
- ▪Among those CPUs to benefit are the AMD Athlon XP series, some early Sempron models, and some Intel Celeron and Pentium III models.
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| Original publisher | Phoronix |
| Canonical URL | https://www.phoronix.com/news/Linux-WMB-SSE-Optimization |
| Publication time | Mon, 10 Aug 2026 06:28:14 -0400 |
| Retrieval time | 2026-08-10T10:40:42.314Z |
| Last seen | 2026-08-10T10:40:42.314Z |
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| Publisher visit | Yes — open original |
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Minor Optimization Coming For AMD Athlon XP Era Systems Running Linux Written by Michael Larabel in Hardware on 10 August 2026 at 06:28 AM EDT. Add A Comment A minor performance optimization is on the way to the Linux kernel for roughly two decade old CPUs that have SSE but lack SSE2. Among those CPUs to benefit are the AMD Athlon XP series, some early Sempron models, and some Intel Celeron and Pentium III models. Open-source developer Yao Zi discovered in the write memory barrier (WMB) code to the Linux kernel for using the SFENCE Instruction it placed a constraint on the processor having SSE2. But the Store Fence (SFENCE) instruction was added in the original SSE, not SSE2.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Phoronix.