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IDProjectCategoryView StatusLast Update
0016617CentOS-7kernelpublic2019-10-21 00:42
Reporterghost_mz 
PrioritynormalSeverityminorReproducibilityalways
Status newResolutionopen 
Product Version7.7-1908 
Target VersionFixed in Version 
Summary0016617: Weird results in bcc-tools
DescriptionHello,
I have bcc-tools installed from the official repository. When I try to profile nginx process by funcslower I have strange results, for example:
09:31:36 nginx 34516 18446744073708.55 86d4 /usr/sbin/nginx:ngx_shmtx_unlock

18446744073708.55 cannot be a valid function execution time. funcslower uses bpf_ktime_get_ns() function to get current time.
Steps To Reproduce1. Install and start nginx
2. Run /usr/share/bcc/tools/funcslower-ngx /usr/sbin/nginx:ngx_shmtx_lock /usr/sbin/nginx:ngx_shmtx_unlock /usr/sbin/nginx:ngx_write_file /usr/sbin/nginx:ngx_read_file /usr/sbin/nginx:ngx_copy_file -m2 -TUK
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Issue History

Date Modified Username Field Change
2019-10-17 09:42 ghost_mz New Issue
2019-10-17 09:42 ghost_mz Tag Attached: bug