[fedora-arm] fedora 25 sddm-greeter high CPU
Hi I've installed Fedora 25 on my Beaglebone Black for the reasons of
testing packages perhaps doing some quality assurance and helping with
test days. I used the KDE spin and I found that sddm-greeter
constantly consumes high amount of CPU, I can log in and it seem to
kick off KDE and it starts akonadi for a new user. I tried to strace
the process and I found that it calls gettimeofday
frequently, which is expected since it displays the time. I don't have
any explanation about why the CPU is so high. I tried to install
systemtap but I didn't find kernel-debug-core. Is there something else
I should do to debug this, is this a bug and should I report this? I
don't want to waste people's time with a bug that might not be valid
which is why I'm trying to investigate this as much as possible.
I know the beaglebone black doesn't have the greatest resources
available one CPU (1 GHZ) and 512MB RAM and on an sdcard (couldn't
find how to move it to the NAND).
```
ATOP - localhost 2016/12/04 18:54:36 ----------- 1h54m56s elapsed
PRC | sys 2m46s | user 1h50m | #proc 98 | #zombie 0 | no procacct |
CPU | sys 0% | user 0% | irq 100% | idle 0% | wait 0% |
CPL | avg1 1.03 | avg5 1.04 | avg15 1.01 | csw 615469 | intr 1476950 |
MEM | tot 492.2M | free 18.6M | cache 197.1M | buff 29.2M | slab 47.4M |
SWP | tot 488.0M | free 488.0M | | vmcom 627.0M | vmlim 734.1M |
DSK | mmcblk0 | busy 0% | read 6552 | write 2682 | avio 4.85 ms |
DSK | mmcblk1 | busy 0% | read 196 | write 0 | avio 3.24 ms |
NET | transport | tcpi 569 | tcpo 538 | udpi 1456 | udpo 924 |
NET | network | ipi 3497 | ipo 1668 | ipfrw 0 | deliv 2623 |
NET | eth0 0% | pcki 4920 | pcko 1807 | si 0 Kbps | so 0 Kbps |
NET | lo ---- | pcki 42 | pcko 42 | si 0 Kbps | so 0 Kbps |
*** system and process activity since boot ***
PID SYSCPU USRCPU VGROW RGROW RDDSK WRDSK ST EXC S CPU CMD
929 68.88s 1h48m 332.8M 190.9M 62604K 448K N- - R 0% sddm-greeter
857 68.10s 66.86s 83728K 27668K 28120K 12K N- - S 0% Xorg
1 9.24s 2.78s 29980K 8996K 63658K 3028K N- - S 0% systemd
```