Cuando tengo algunos programas ejecutándose en KDE y no hago nada, todavía tengo Xorg y plasmashell, cada uno de los cuales ocupa alrededor del 11% del núcleo de la CPU. kwin_x11se lleva otro 6 %. Junto con otros trabajos en segundo plano, llego a la región del 12 % de la carga total del sistema en inactivo. Esto significa que el ventilador de mi computadora portátil nunca baja al nivel más bajo.
¿Cómo puedo saber qué causa esta carga cuando aparentemente no pasa nada?
rastro
pista en Xorg
straceLo conecté Xorgcomo root y lo dejé funcionar durante unos tres segundos. En este tiempo recuperé 8273 líneas de salida. Parece ser una repetición del siguiente bloque:
strace: Process 1255 attached
strace: [ Process PID=1255 runs in x32 mode. ]
strace: [ Process PID=1255 runs in 64 bit mode. ]
writev(58, [{iov_base="Z\3Mg\37+\7\2\"+\7\2\2\235z\0\0\0\0\0008\4\200\7\200\7\0\0008\4\200\7", iov_len=32}], 1) = 32
ioctl(24, DRM_IOCTL_I915_GEM_EXECBUFFER2, 0x7ffd622230e0) = 0
ioctl(24, DRM_IOCTL_I915_GEM_THROTTLE or DRM_IOCTL_RADEON_CP_RESUME, 0) = 0
ioctl(24, DRM_IOCTL_I915_GEM_MADVISE, 0x7ffd62223034) = 0
ioctl(24, DRM_IOCTL_I915_GEM_BUSY, 0x7ffd62222fd0) = 0
ioctl(24, DRM_IOCTL_I915_GEM_MADVISE, 0x7ffd62223040) = 0
getpid() = 1255
epoll_wait(3, [{EPOLLIN, {u32=48152672, u64=48152672}}], 256, 630) = 1
setitimer(ITIMER_REAL, {it_interval={tv_sec=0, tv_usec=5000}, it_value={tv_sec=0, tv_usec=5000}}, NULL) = 0
recvmsg(56, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\224\2\6\0\347_\305\1\16\0\300\1\0\0\0\0\200\0078\4\0\36 \224\4\4\0\347_\305\1"..., iov_len=16384}], msg_iovlen=1, msg_control=[{cmsg_len=24, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, cmsg_data=[106, 107]}], msg_controllen=24, msg_flags=0}, 0) = 40
ioctl(24, DRM_IOCTL_PRIME_FD_TO_HANDLE, 0x7ffd62223f3c) = 0
lseek(106, 0, SEEK_END) = 8388608
ioctl(24, DRM_IOCTL_I915_GEM_GET_TILING, 0x7ffd62223f70) = 0
getpid() = 1255
close(106) = 0
fcntl(107, F_DUPFD_CLOEXEC, 2048) = -1 EINVAL (Invalid argument)
mmap(NULL, 4, PROT_READ|PROT_WRITE, MAP_SHARED, 107, 0) = 0x7fca1cb29000
recvmsg(56, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
setitimer(ITIMER_REAL, {it_interval={tv_sec=0, tv_usec=0}, it_value={tv_sec=0, tv_usec=0}}, NULL) = 0
epoll_wait(3, [{EPOLLIN, {u32=48152672, u64=48152672}}], 256, 627) = 1
setitimer(ITIMER_REAL, {it_interval={tv_sec=0, tv_usec=5000}, it_value={tv_sec=0, tv_usec=5000}}, NULL) = 0
recvmsg(56, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\223\1\22\0\16\0\300\1\347_\305\1\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., iov_len=16384}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 80
ioctl(24, DRM_IOCTL_WAIT_VBLANK, 0x7ffd62224110) = 0
ioctl(24, DRM_IOCTL_WAIT_VBLANK, 0x7ffd62224050) = 0
ioctl(24, DRM_IOCTL_WAIT_VBLANK, 0x7ffd622240f0) = 0
writev(56, [{iov_base="\1 \313\322\0\0\0\0\1\1\0\0\0\0\0\0008\4\200\7\0\0\0\0\0\0\0\0\0\0\0\0", iov_len=32}], 1) = 32
recvmsg(56, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
setitimer(ITIMER_REAL, {it_interval={tv_sec=0, tv_usec=0}, it_value={tv_sec=0, tv_usec=0}}, NULL) = 0
epoll_wait(3, [{EPOLLIN, {u32=48175088, u64=48175088}}, {EPOLLIN, {u32=59512640, u64=59512640}}, {EPOLLIN, {u32=39795904, u64=39795904}}], 256, 623) = 3
read(24, "\1\0\0\0 \0\0\0\21\334\10\0\0\0\0\0c\37\0\0\346\36\t\0\232u\4\0\0\0\0\0", 1024) = 32
ioctl(24, DRM_IOCTL_GEM_CLOSE, 0x7ffd62222928) = 0
A continuación, ordené el resultado y solo tomé las líneas únicas (2341). Luego eliminé líneas que solo difieren por números o argumentos de cadena, de modo que uno pueda tener una descripción general de lo que sucede:
close(106) = 0
close(107) = 0
epoll_wait(3, [], 256, 0) = 0
epoll_wait(3, [{EPOLLIN, {u32=39795904, u64=39795904}}], 256, 0) = 1
epoll_wait(3, [{EPOLLIN, {u32=39795904, u64=39795904}}, {EPOLLIN, {u32=44232592, u64=44232592}}], 256, 299613) = 2
epoll_wait(3, [{EPOLLIN, {u32=39795904, u64=39795904}}, {EPOLLIN, {u32=44232592, u64=44232592}}, {EPOLLIN, {u32=48152672, u64=48152672}}], 256, 0) = 3
epoll_wait(3, [{EPOLLIN, {u32=44232592, u64=44232592}}, {EPOLLIN, {u32=39795904, u64=39795904}}, {EPOLLIN, {u32=59512640, u64=59512640}}, {EPOLLIN, {u32=48167840, u64=48167840}}, {EPOLLIN, {u32=48298384, u64=48298384}}, {EPOLLIN, {u32=48175088, u64=48175088}}], 256, 0) = 6
fcntl(107, F_DUPFD_CLOEXEC, 2048) = -1 EINVAL (Invalid argument)
getpid() = 1255
ioctl(24, DRM_IOCTL_GEM_CLOSE, 0x7ffd62222928) = 0
ioctl(24, DRM_IOCTL_I915_GEM_BUSY, 0x7ffd62222fd0) = 0
ioctl(24, DRM_IOCTL_I915_GEM_CREATE, 0x7ffd62223800) = 0
ioctl(24, DRM_IOCTL_I915_GEM_EXECBUFFER2, 0x7ffd622230e0) = 0
ioctl(24, DRM_IOCTL_I915_GEM_GET_TILING, 0x7ffd62223f70) = 0
ioctl(24, DRM_IOCTL_I915_GEM_MADVISE, 0x7ffd62222b84) = 0
ioctl(24, DRM_IOCTL_I915_GEM_PWRITE, 0x7ffd62223820) = 0
ioctl(24, DRM_IOCTL_I915_GEM_SET_DOMAIN, 0x7ffd622237f4) = 0
ioctl(24, DRM_IOCTL_I915_GEM_THROTTLE or DRM_IOCTL_RADEON_CP_RESUME, 0) = 0
ioctl(24, DRM_IOCTL_I915_GEM_THROTTLE or DRM_IOCTL_RADEON_CP_RESUME, 0) = ? ERESTARTSYS (To be restarted if SA_RESTART is set)
ioctl(24, DRM_IOCTL_MODE_DIRTYFB, 0x7ffd622240b0) = 0
ioctl(24, DRM_IOCTL_MODE_SETGAMMA, 0x7ffd62224250) = 0
ioctl(24, DRM_IOCTL_PRIME_FD_TO_HANDLE, 0x7ffd62223f3c) = 0
ioctl(24, DRM_IOCTL_WAIT_VBLANK, 0x7ffd62224050) = 0
ioctl(24, DRM_IOCTL_WAIT_VBLANKstrace: Process 1255 detached
lseek(106, 0, SEEK_END) = 10485760
mmap(NULL, 4, PROT_READ|PROT_WRITE, MAP_SHARED, 107, 0) = 0x7fca1cb29000
mremap(0x7fca1604b000, 126976, 20480, MREMAP_MAYMOVE) = 0x7fca1604b000
munmap(0x7fca16219000, 524288) = 0
read(24, "\1\0\0\0 \0\0\0000\334\10\0\0\0\0\0d\37\0\0\207L\4\0@X\7\0\0\0\0\0", 1024) = 32
read(27, "\0", 40) = 1
recvmsg(101, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
recvmsg(101, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="+\0\1\0", iov_len=16384}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 4
recvmsg(101, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\22\0\n\0\6\0\0\6'\0\0\0\37\0\0\0\10\21\4\0\20\0\0\0~/home/m"..., iov_len=16384}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 68
recvmsg(56, {msg_namelen=0}, 0) = -1 EAGAIN (Resource temporarily unavailable)
recvmsg(56, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\16\0\2\0!\0\300\1", iov_len=16384}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 8
recvmsg(56, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\16\0\2\0\6\0\0\6(\0\4\0\6\0\0\6\1\1\0\0\0\0\0\0", iov_len=16384}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 24
recvmsg(56, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\223\1\22\0\243-\304\1Y`\305\1\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., iov_len=16384}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 72
recvmsg(56, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\224\2\6\0z`\305\1\16\0\300\1\0\0\0\0\200\0078\4\0\36 \224\4\4\0z`\305\1"..., iov_len=16384}], msg_iovlen=1, msg_control=[{cmsg_len=24, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, cmsg_data=[106, 107]}], msg_controllen=24, msg_flags=0}, 0) = 40
rt_sigreturn({mask=[]}) = 0
setitimer(ITIMER_REAL, {it_interval={tv_sec=0, tv_usec=0}, it_value={tv_sec=0, tv_usec=0}}, NULL) = 0
--- SIGALRM {si_signo=SIGALRM, si_code=SI_KERNEL} ---
strace: Process 1255 attached
strace: [ Process PID=1255 runs in 64 bit mode. ]
strace: [ Process PID=1255 runs in x32 mode. ]
writev(101, [{iov_base="\0026\353\7\241\250z\0\1\1\0\0\6\0\0\6\0\0\0\0\24\n4\1\224\2\27\1\4\0\1\0", iov_len=32}], 1) = 32
writev(56, [{iov_base="4d4058d4-7455-406b-b370-76d3c09f"..., iov_len=36}], 1) = 36
writev(56, [{iov_base="~/home/mu : bash \342\200\224 Konsole", iov_len=28}], 1) = 28
writev(56, [{iov_base="konsole\0konsole\0", iov_len=16}], 1) = 16
writev(56, [{iov_base="org.kde.konsole", iov_len=15}, {iov_base="\0", iov_len=1}], 2) = 16
writev(58, [{iov_base="~/home/mu : bash \342\200\224 Konsole", iov_len=28}], 1) = 28
writev(58, [{iov_base="k\246z\0", iov_len=4}], 1) = 4
rastro en plasmashell
También hubo una carga alta plasmashell, el comienzo stracees el siguiente:
strace: Process 7633 attached
futex(0x7ffd1144c0f8, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x556189417398, FUTEX_WAKE_PRIVATE, 1) = 0
munmap(0x7f9c94603000, 4) = 0
ioctl(16, DRM_IOCTL_GEM_CLOSE, 0x7ffd1144bfc8) = 0
ioctl(16, DRM_IOCTL_I915_GEM_MADVISE, 0x7ffd1144c094) = 0
ioctl(16, DRM_IOCTL_I915_GEM_MADVISE, 0x7ffd1144c084) = 0
ioctl(16, DRM_IOCTL_I915_GEM_MADVISE, 0x7ffd1144c094) = 0
poll([{fd=3, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=3, revents=POLLOUT}])
writev(3, [{iov_base="6\0\2\0\315\5\350\1\206\21\2\0\316\5\350\1\223\3\4\0\314\5\350\1kf\344\1\0\0\0\0"..., iov_len=64}], 1) = 64
futex(0x5561894173e8, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x556189417398, FUTEX_WAKE_PRIVATE, 1) = 1
poll([{fd=3, events=POLLIN}], 1, -1) = 1 ([{fd=3, revents=POLLIN}])
recvmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\1\0\336_\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., iov_len=4096}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = 64
futex(0x5561894173ec, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x556189417398, FUTEX_WAKE_PRIVATE, 1) = 1
memfd_create("xshmfence", MFD_CLOEXEC|MFD_ALLOW_SEALING) = 31
ftruncate(31, 4) = 0
mmap(NULL, 4, PROT_READ|PROT_WRITE, MAP_SHARED, 31, 0) = 0x7f9c94603000
ioctl(16, DRM_IOCTL_I915_GEM_BUSY, 0x7ffd1144bd70) = 0
ioctl(16, DRM_IOCTL_I915_GEM_CREATE, 0x7ffd1144bde0) = 0
ioctl(16, DRM_IOCTL_I915_GEM_SET_TILING, 0x7ffd1144bd30) = 0
ioctl(16, DRM_IOCTL_I915_GEM_SET_DOMAIN, 0x7ffd1144bdd4) = 0
ioctl(16, DRM_IOCTL_PRIME_HANDLE_TO_FD, 0x7ffd1144bf1c) = 0
poll([{fd=3, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=3, revents=POLLOUT}])
sendmsg(3, {msg_name=NULL, msg_namelen=0, msg_iov=[{iov_base="\224\2\6\0\320\5\350\1\16\0\340\1\0\0\0\0\200\0078\4\0\36 \224\4\4\0\320\5\350\1"..., iov_len=40}], msg_iovlen=1, msg_control=[{cmsg_len=24, cmsg_level=SOL_SOCKET, cmsg_type=SCM_RIGHTS, cmsg_data=[34, 31]}], msg_controllen=24, msg_flags=0}, 0) = 40
close(34) = 0
close(31) = 0
ioctl(16, DRM_IOCTL_I915_GEM_MADVISE, 0x7ffd1144bda0) = 0
ioctl(16, DRM_IOCTL_I915_GEM_SET_TILING, 0x7ffd1144bcf0) = 0
ioctl(16, DRM_IOCTL_I915_GEM_MADVISE, 0x7ffd1144bd10) = 0
ioctl(16, DRM_IOCTL_I915_GEM_MADVISE, 0x7ffd1144bda0) = 0
ioctl(16, DRM_IOCTL_I915_GEM_SET_TILING, 0x7ffd1144bcf0) = 0
getpid() = 7633
getpid() = 7633
ioctl(16, DRM_IOCTL_I915_GEM_EXECBUFFER2, 0x7ffd1144c380) = 0
ioctl(16, DRM_IOCTL_I915_GEM_WAIT or DRM_IOCTL_RADEON_GEM_OP, 0x7ffd1144c330) = 0
ioctl(16, DRM_IOCTL_I915_GEM_MADVISE, 0x7ffd1144c2f4) = 0
ioctl(16, DRM_IOCTL_I915_GEM_MADVISE, 0x7ffd1144c2d4) = 0
ioctl(16, DRM_IOCTL_I915_GEM_BUSY, 0x7ffd1144c270) = 0
ioctl(16, DRM_IOCTL_I915_GEM_MADVISE, 0x7ffd1144c2e0) = 0
poll([{fd=3, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=3, revents=POLLOUT}])
writev(3, [{iov_base="\223\1\22\0\16\0\340\1\320\5\350\1\1\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., iov_len=72}], 1) = 72
getpid() = 7633
poll([{fd=3, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=3, revents=POLLOUT}])
writev(3, [{iov_base="\16\0\2\0kf\344\1", iov_len=8}], 1) = 8
futex(0x556189417398, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x556189417398, FUTEX_WAKE_PRIVATE, 1) = 0
munmap(0x7f9c94603000, 4) = 0
ioctl(16, DRM_IOCTL_GEM_CLOSE, 0x7ffd1144bfc8) = 0
ioctl(16, DRM_IOCTL_I915_GEM_MADVISE, 0x7ffd1144c094) = 0
ioctl(16, DRM_IOCTL_I915_GEM_MADVISE, 0x7ffd1144c084) = 0
ioctl(16, DRM_IOCTL_I915_GEM_MADVISE, 0x7ffd1144c094) = 0
poll([{fd=3, events=POLLIN|POLLOUT}], 1, -1) = 1 ([{fd=3, revents=POLLOUT}])
writev(3, [{iov_base="6\0\2\0\320\5\350\1\206\21\2\0\321\5\350\1\223\3\4\0\317\5\350\1\16\0\340\1\0\0\0\0"..., iov_len=64}], 1) = 64
futex(0x7ffd1144bf48, FUTEX_WAIT_PRIVATE, 0, NULL) = 0
futex(0x556189417398, FUTEX_WAKE_PRIVATE, 1) = 0
memfd_create("xshmfence", MFD_CLOEXEC|MFD_ALLOW_SEALING) = 31
ftruncate(31, 4) = 0
mmap(NULL, 4, PROT_READ|PROT_WRITE, MAP_SHARED, 31, 0) = 0x7f9c94603000
ioctl(16, DRM_IOCTL_I915_GEM_CREATE, 0x7ffd1144bde0) = 0
ioctl(16, DRM_IOCTL_I915_GEM_SET_TILING, 0x7ffd1144bd30) = 0
Plasmashell me dio 16008 líneas en aproximadamente tres segundos, fue muy lento en responder a las entradas.
xrandr --actual
Este es el resultado de xrandr --currentmientras plasmashell acapara todo un núcleo de CPU:
Screen 0: minimum 320 x 200, current 3000 x 1920, maximum 8192 x 8192
LVDS-1 connected (normal left inverted right x axis y axis)
1366x768 60.02 +
1024x768 60.04 60.00
960x720 60.00
928x696 60.05
896x672 60.01
800x600 60.00 60.32 56.25
700x525 59.98
640x512 60.02
640x480 60.00 59.94
512x384 60.00
400x300 60.32 56.34
320x240 60.05
VGA-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-1 connected 1080x1920+1920+0 left (normal left inverted right x axis y axis) 509mm x 286mm
1920x1080 60.00*+
1600x900 60.00
1280x1024 75.02 60.02
1152x864 75.00
1024x768 75.03 60.00
800x600 75.00 60.32
640x480 75.00 59.94
720x400 70.08
HDMI-2 disconnected (normal left inverted right x axis y axis)
HDMI-3 disconnected (normal left inverted right x axis y axis)
DP-2 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 509mm x 286mm
1920x1080 60.00*+
1600x900 60.00
1280x1024 75.02 60.02
1152x864 75.00
1024x768 75.03 60.00
800x600 75.00 60.32
640x480 75.00 59.94
720x400 70.08
DP-3 disconnected (normal left inverted right x axis y axis)