I have a qemu instance running and perf appears to be in order there.Even so, when issuing perf from eclipse (YoctoProjectTools>perf) no info is displayed. The following is the output from eclipse console view:


Last login: Tue Jun 28 16:15:43 2016 from 192.168.7.1
export TERM=vt100;cd; perf
root@qemux86:~# 1;97R

The command ends there. Not sure what this "1;97R" means, but it seems to be input sent by eclipse and not output returned from qemu. Actually the eclipse-poky code has the perf init command as "cd; perf\r", not sure if the carriage return is translated here oddly.

The connection is fine since I could still run commands from the terminal opened by eclipse:

-sh: 1: command not found
-sh: 97R: command not found
root@qemux86:~# perf

 usage: perf [--version] [--help] [OPTIONS] COMMAND [ARGS]

 The most commonly used perf commands are:
   annotate        Read perf.data (created by perf record) and display annotated code
   archive         Create archive with object files with build-ids found in perf.data file
   bench           General framework for benchmark suites
   buildid-cache   Manage build-id cache.
   buildid-list    List the buildids in a perf.data file
   data            Data file related processing
   diff            Read perf.data files and display the differential profile
   evlist          List the event names in a perf.data file
   inject          Filter to augment the events stream with additional information
   kmem            Tool to trace/measure kernel memory properties
   kvm             Tool to trace/measure kvm guest os
   list            List all symbolic event types
   lock            Analyze lock events
   mem             Profile memory accesses
   record          Run a command and record its profile into perf.data
   report          Read perf.data (created by perf record) and display the profile
   sched           Tool to trace/measure scheduler properties (latencies)
   script          Read perf.data (created by perf record) and display trace output
   stat            Run a command and gather performance counter statistics
   test            Runs sanity tests.
   timechart       Tool to visualize total system behavior during a workload
   top             System profiling tool.
   trace           strace inspired tool
   probe           Define new dynamic tracepoints

 See 'perf help COMMAND' for more information on a specific command.

root@qemux86:~#