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I'm using xen which comes with ubuntu 16.04.
root@or-xen-d0:/var/log/xen# xl list
Name ID Mem VCPUs State Time(s)
Domain-0 0 23962 2 r----- 3004.6
Mini-OS 51 32 1 r----- 2024.6
root@or-xen-d0:/var/log/xen# uniprof -F 1 -T 1 - 51
Could not access information for domid 51. (Does domid 51 exist?)
strace:
root@or-xen-d0:/var/log/xen# strace uniprof -F 1 -T 1 - 51
...
open("/proc/xen/privcmd", O_RDWR) = 3
fcntl(3, F_GETFD) = 0
fcntl(3, F_SETFD, FD_CLOEXEC) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_LOCKED, -1, 0) = 0x7f9b995c9000
madvise(0x7f9b995c9000, 4096, MADV_DONTFORK) = 0
ioctl(3, _IOC(0, 0x50, 0x00, 0x30), 0x7ffca3114730) = -1 EACCES (Permission denied)
write(2, "Could not access information for"..., 66Could not access information for domid 51. (Does domid 51 exist?)
) = 66
exit_group(-5) = ?
What should I do now?
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