Timidity가 코어의 모든 처리 능력을 차지하는 이유

2024-5-26 • tag-icon

그래서 아까 물어봤지왜 timidity내 시스템에서 실행했는데 systemd.

이제 이것이 내 코어 중 하나를 차지하는 이유가 궁금합니다(내 프로세서는 AMD Athlon(tm) II X4 640 프로세서이므로 코어가 4개입니다).

프로세스에서 strace를 실행하면 다음과 같은 결과를 얻습니다(몇 초 동안 실행되고 반복되는 것 같아서 그 후에 중지했습니다).

ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0

다음 정보에 따르면 프로세스에서 열린 파일은 다음과 같습니다 /proc/$PID/fd.

/dev/null
/dev/snd/timer
/dev/snd/pcmC0D0p
/dev/snd/controlC0
/dev/snd/seq

Linux 배포판은 Debian 안정 버전(Jessie)입니다. 버전 timidity은 입니다 2.13.2-40.2.

관련 정보