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powerstat package

  1. Bug #1467014
  2. Comment #9

Comment 9 for bug 1467014

Revision history for this message
John Lenton (chipaca) wrote : Re: powertat -R erroneously reports no RAPL domains

perhaps relevantly, here is the strace of powertop trying to read the msr.

24773 write(1, "RAPL device for cpu 0\n", 22) = 22
24773 access("/dev/cpu/0/msr", R_OK) = 0
24773 open("/dev/cpu/0/msr", O_RDONLY) = 4
24773 pread(4, 0x7ffd966dbb08, 8, 1553) = -1 EIO (Input/output error)
24773 close(4) = 0
24773 access("/dev/cpu/0/msr", R_OK) = 0
24773 open("/dev/cpu/0/msr", O_RDONLY) = 4
24773 pread(4, 0x7ffd966dbb08, 8, 1561) = -1 EIO (Input/output error)
24773 close(4) = 0
24773 access("/dev/cpu/0/msr", R_OK) = 0
24773 open("/dev/cpu/0/msr", O_RDONLY) = 4
24773 pread(4, 0x7ffd966dbb08, 8, 1593) = -1 EIO (Input/output error)
24773 close(4) = 0
24773 access("/dev/cpu/0/msr", R_OK) = 0
24773 open("/dev/cpu/0/msr", O_RDONLY) = 4
24773 pread(4, 0x7ffd966dbb08, 8, 1601) = -1 EIO (Input/output error)
24773 close(4) = 0
24773 access("/dev/cpu/0/msr", R_OK) = 0
24773 open("/dev/cpu/0/msr", O_RDONLY) = 4
24773 pread(4, 0x7ffd966dbae8, 8, 1542) = -1 EIO (Input/output error)
24773 close(4) = 0
24773 access("/dev/cpu/0/msr", R_OK) = 0
24773 open("/dev/cpu/0/msr", O_RDONLY) = 4
24773 pread(4, 0x7ffd966dbae8, 8, 1542) = -1 EIO (Input/output error)
24773 close(4) = 0
24773 access("/dev/cpu/0/msr", R_OK) = 0
24773 open("/dev/cpu/0/msr", O_RDONLY) = 4
24773 pread(4, 0x7ffd966dbae8, 8, 1542) = -1 EIO (Input/output error)
24773 close(4) = 0