The 'funcslower' bcc-tool fails to show the kernel stack frame with the '-K' option
Issue
- The
funcslower
bcc-tool fails to show the kernel stack frame with the-K
option.
# /usr/share/bcc/tools/funcslower -K "vfs_read"
Tracing function calls slower than 1 ms... Ctrl+C to quit.
COMM PID LAT(ms) RVAL FUNC
ls 333917 10.27 340 vfs_read
b'kretprobe_trampoline'
ls 333917 5.71 340 vfs_read
b'kretprobe_trampoline'
Environment
- Red Hat Enterprise Linux 9
- bcc-tools
- funcslower
Subscriber exclusive content
A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.