Hi experts!
I am facing a symbols problem when run perf (a software can analyze
performance of a program) today.
I executed command line "perf record -p 6625 -g" to collect the report
of tgtd (pid is 6625). Then I use "perf report -g" to read it.
When I zoom into tgtd DSO, I found the symbol name on the top is
missing, only address shown. But other symbols are fine.
tgt version : tgt-1.0.44-2.70.x86_64
perf version: perf-3.12.28-33.33.x86_64
OS: SUSE Linux Enterprise Server 12
The scene:
Samples: 5K of event 'cpu-clock', Event count (approx.): 1435000000,
DSO: tgtd
+ 43.99% tgtd [.] 0x0000000000012ac0
+ 11.32% tgtd [.] iscsi_rx_handler
+ 9.90% tgtd [.] iscsi_tx_handler
+ 4.48% tgtd [.] scsi_cmd_perform
+ 3.87% tgtd [.] iscsi_scsi_cmd_execute
+ 2.39% tgtd [.] it_nexus_lookup
+ 2.21% tgtd [.] target_cmd_queue
+ 2.09% tgtd [.] tgt_event_modify
+ 1.88% tgtd [.] target_cmd_perform
+ 1.88% tgtd [.] bs_thread_cmd_submit
+ 1.85% tgtd [.] is_bs_support_opcode
I have tried to use readelf and nm, did not find it. Hope can get some
help and suggestion from experts!
Thanks for your help.
BR
Zhu Lingshan
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