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graphic: 0.808
device: 0.784
network: 0.782
semantic: 0.697
files: 0.593
socket: 0.544
vnc: 0.532
performance: 0.529
other: 0.376
PID: 0.311
boot: 0.308
debug: 0.303
permissions: 0.195
KVM: 0.189
where the trace file "trace-*"
I compile qemu-system-aarch64 with --enable-trace-backends=simple option, then start qemu with -trace nvme* , qemu start successful but I cann't find the trace file "trace-*" at qemu started directory.
I tested qemu.git/master on Linux x86_64 to confirm that the simple trace backend works. trace-$pid files are written to the current working directory.
If QEMU prints a warning that the trace event name does not exist, try escaping the asterisk on your command-line: -trace nvme\*
You can find the trace-event files in the source tree, if you were talking about those. Anyway, this does not really sound like a bug, so I'm closing this ticket now. If you need general help, please use the qemu-discuss mailing list or the #qemu channel on OFTC IRC instead.
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