在2024年7月14日七月 上午10:54，Huacai Chen写道： > On Sun, Jul 14, 2024 at 10:41 AM Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx> wrote: >> >> Nowadays SYNC_R4K is performing better than Loongson64's >> custom sync mechanism. > Loongson64's preciseness is significantly better than SYNC_R4K. My updated implementation[1] uses a multi-pass regression methodology which can compensite communication overhead. I had measured delta with EJTAG DINT on Loongson-2K and it can be reduced to as low as 4 cycles while ASK_C0_COUNT has ~50 cycles delta. [1]: https://lore.kernel.org/linux-mips/20240511-mips-clks-v1-0-ddb4a10ee9f9@xxxxxxxxxxx/ Thanks - Jiaxun > > Huacai -- - Jiaxun
