Hi! > > > V4.18 is slower than it should be. > > > > > > user@devuan:~$ time cat /dev/urandom | head -c 10000000 | bzip2 -9 - > > > | wc -c > > > 10044291 > > > 52.73user 2.40system 61.53 (1m1.534s) elapsed 89.60%CPU > > > user@devuan:~$ uname -a > > > Linux devuan 4.18.0-rc1-87964-gfa19934-dirty #743 SMP Sun Jun 17 > > > 19:26:37 CEST 2018 armv7l GNU/Linux > > > > > > That bzip should take 12 seconds, not minute. > > > > > > Any ideas? Do you see it, too? > > > > I've noticed firefox is super slow.. Git bisect time? > > Hmm not happening for me at least on duovero and droid4, > I'm getting about 20s for v4.17 and v4.18-rc1.
Something weird is going on here. My notes say it should be 12
seconds.
It is indeed 20 seconds for v4.17, but it is 12 seconds in v4.14.
v4.14 is:
# CONFIG_CPU_FREQ is not set
CONFIG_CPU_IDLE=y
# CONFIG_CPU_IDLE_GOV_LADDER is not set
CONFIG_CPU_IDLE_GOV_MENU=y
# CONFIG_ARM_CPUIDLE is not set
In v4.18, I have:
CONFIG_CPU_FREQ=y
CONFIG_CPU_FREQ_GOV_ATTR_SET=y
CONFIG_CPU_FREQ_GOV_COMMON=y
CONFIG_CPU_FREQ_STAT=y
CONFIG_CPU_FREQ_DEFAULT_GOV_ONDEMAND=y
CONFIG_CPU_IDLE=y
CONFIG_CPU_IDLE_GOV_MENU=y
CONFIG_ARCH_NEEDS_CPU_IDLE_COUPLED=y
Pavel
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(english) http://www.livejournal.com/~pavelmachek
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http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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