在2024年7月14日七月 上午11:00，Jiaxun Yang写道： > 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/ This is currently in mips-next. > > Thanks > - Jiaxun > >> >> Huacai > > > -- > - Jiaxun -- - Jiaxun
