On Fri, 2021-09-03 at 15:08 +0200, Daniel Danzberger wrote: > > > > > > +CONFIG_HZ=250 > > > > Why 250 Hz? Does the 100 Hz all other targets use cause any > > measurable > > increase in latency? > > [snipped] > I did not notice this changed. The config I made for 5.10 was before > your commit 3326b5e75c277b4fac21bffd2085df4aa40d2775 which changed > the > default frequency to 100 Hz. > There should be no issue with 100 Hz on octecontx, but I will confirm > this with new builds on my test devices. Confirmed. No issues here with 100 Hz. > > > > > > +CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y > > > > CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y might not be a performance > > win, > > especially with only 1 GiB of RAM. Should be measured, otherwise > > MADVISE should be selected instead. > Same here, it was selected in the 5.4 kernel config and I have only > run > tested with this option so far. > Let me do some benchmarking with MADVISE before we continue here ... Looks like none of the processes running even gets a huge page: -- root@OpenWrt:~# grep AnonHugePages /proc/meminfo AnonHugePages: 0 kB root@OpenWrt:~# -- Even my test tool that just allocs one 8MB block doesn't get one. Looks like CONFIG_TRANSPARENT_HUGEPAGE isn't working on this platform.
> > > > Best regards, > > Rui > > > -- Regards Daniel Danzberger embeDD GmbH, Alter Postplatz 2, CH-6370 Stans _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
