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Diffstat (limited to 'docs/tracing.txt')
| -rw-r--r-- | docs/tracing.txt | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/docs/tracing.txt b/docs/tracing.txt index 29f2f9a24d..e62444ca68 100644 --- a/docs/tracing.txt +++ b/docs/tracing.txt @@ -192,6 +192,18 @@ After running qemu by root user, you can get the trace: Restriction: "ftrace" backend is restricted to Linux only. +=== Syslog === + +The "syslog" backend sends trace events using the POSIX syslog API. The log +is opened specifying the LOG_DAEMON facility and LOG_PID option (so events +are tagged with the pid of the particular QEMU process that generated +them). All events are logged at LOG_INFO level. + +NOTE: syslog may squash duplicate consecutive trace events and apply rate + limiting. + +Restriction: "syslog" backend is restricted to POSIX compliant OS. + ==== Monitor commands ==== * trace-file on|off|flush|set <path> |