Hi! > > I was about to add "facepalm" emoji here, as disabling l2 cache is > > major mistake. OTOH if you also see 20 seconds, then either there is > > another problem, or you need to enable l2 cache, too (and I don't have > > to feel too bad for misconfiguring it). > > OK. I checked and duovero runs only at 600MHz. I can only > get down to 19 seconds with omap2plus_defconfig if I disable > CONFIG_CPU_FREQ so the max speed is maintained from bootloader. > Otherwise it runs at most at 1GHz, I think any higher speeds > need smartreflex and voltage scaling working which we don't > have in the mainline kernel. Not sure what happens with higher > speeds with mainline kernel or if they are unsafe in the long > run. > > Anyways, care to post your .config somewhere so I can see what > the numbers are for me with it? I'm attaching config I'm using for v4.18. In current boot, bzip2 takes 16 seconds. user@devuan:~$ time cat /dev/urandom | head -c 10000000 | sudo nice -n -19 bzip2 -9 - | wc -c 10044705 15.68user 0.53system 15.93 (0m15.931s) elapsed 101.82%CPU I guess I should go back to v4.17 to get 12 seconds..?! Confused, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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