[Bug 200212] [NEW] Amarok eats CPU when idling

[Chris]

Public bug reported:

Binary package hint: amarok

Hello,

I have a brand new installation of Ubuntu Hardy , with latest updates. I
am using KDE3 desktop from official mirrors. I noticed that Amarok is
constantly using from 5 to 12% of my CPU (Core Duo), no only durin my
session startup but all the time, even hours after my session start.

Amarok is configured to start with my KDE session, it starts eating CPU
as soon it starts. If I open amarok window, CPU load goes a bit higher,
then if I close window or minimize, it stops eating CPU at all. If I
open window again, CPU is used again.

Here is normal a normal strace (when it doesn't eat CPU)  they happen 2/3 times per second:
read(5, 0x808fa1c, 4096)                = -1 EAGAIN (Resource temporarily unavailable)
gettimeofday({1205076838, 246831}, NULL) = 0
select(26, [5 6 7 10 12 14 16 18 20 23 25], [], [], {0, 198383}) = 0 (Timeout)
gettimeofday({1205076838, 446532}, NULL) = 0
gettimeofday({1205076838, 446640}, NULL) = 0
read(5, 0x808fa1c, 4096)                = -1 EAGAIN (Resource temporarily unavailable)
gettimeofday({1205076838, 446780}, NULL) = 0
select(26, [5 6 7 10 12 14 16 18 20 23 25], [], [], {0, 198434}) = 0 (Timeout)
gettimeofday({1205076838, 646537}, NULL) = 0
gettimeofday({1205076838, 646738}, NULL) = 0
read(5, 0x808fa1c, 4096)                = -1 EAGAIN (Resource temporarily unavailable)
gettimeofday({1205076838, 646864}, NULL) = 0
select(26, [5 6 7 10 12 14 16 18 20 23 25], [], [], {0, 198350}) = 0 (Timeout)
gettimeofday({1205076838, 846538}, NULL) = 0
gettimeofday({1205076838, 846642}, NULL) = 0

Now when Amarok starts eating CPU, its spamming system calls like hundreds per second:
gettimeofday({1205076930, 687552}, NULL) = 0
select(6, [5], [5], NULL, NULL)         = 1 (out [5])
writev(5, [{">\5\7\0\326\6@\2\325\6@\2\331\5@\2\0\0\0\0\0\0\0\0\332"..., 4088}, {">\5\7\0\327\6@\2\325\6@\2\331\5@\2\0\0$\0h\1%\0\4\0\0\0"..., 28}], 2) = 4116
select(6, [5], [5], NULL, NULL)         = 1 (out [5])
writev(5, [{">\5\7\0001\7@\2\325\6@\2\331\5@\2\0\0\0\0m\1%\0\4\0$\0"..., 4088}, {">\5\7\0001\7@\2\325\6@\2\331\5@\2\0\0\0\0\332\2%\0\4\0"..., 28}], 2) = 4116
select(6, [5], [5], NULL, NULL)         = 1 (out [5])
writev(5, [{">\5\7\0\327\6@\2\325\6@\2\331\5@\2\0\0$\0\332\2%\0\4\0"..., 4088}, {">\5\7\0\327\6@\2\325\6@\2\331\5@\2\0\0$\0G\4%\0\4\0\0\0"..., 28}], 2) = 4116
select(6, [5], [5], NULL, NULL)         = 1 (out [5])
writev(5, [{">\5\7\0001\7@\2\325\6@\2\331\5@\2\0\0\0\0L\4%\0\4\0$\0"..., 4088}, {">\5\7\0`\1@\2\325\6@\2\331\5@\2\0\0\0\0r\1%\0\4\0\2\0", 28}], 2) = 4116
select(6, [5], [5], NULL, NULL)         = 1 (out [5])
writev(5, [{">\5\7\0`\1@\2\325\6@\2\331\5@\2\0\0\0\0w\1%\0\4\0\2\0>"..., 4088}, {">\5\7\0`\1@\2\325\6@\2\331\5@\2\0\0\0\0Q\4%\0\4\0\2\0", 28}], 2) = 4116
gettimeofday({1205076930, 691621}, NULL) = 0
select(6, [5], [5], NULL, NULL)         = 1 (out [5])
writev(5, [{">\5\7\0`\1@\2\325\6@\2\331\5@\2\0\0\0\0V\4%\0\4\0\2\0>"..., 980}], 1) = 980
read(5, 0x808fa1c, 4096)                = -1 EAGAIN (Resource temporarily unavailable)

Tell me if you need more informations.

My ubuntu version:
root at icare:~# cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=8.04
DISTRIB_CODENAME=hardy
DISTRIB_DESCRIPTION="Ubuntu hardy (development branch)"

** Affects: amarok (Ubuntu)
     Importance: Undecided
         Status: New

-- 
Amarok eats CPU when idling
https://bugs.launchpad.net/bugs/200212
You received this bug notification because you are a member of Kubuntu
Team, which is subscribed to amarok in ubuntu.