https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=287752
Bug ID: 287752
Summary: DTrace error: no symbolic type information is
available for kernel`ticks: No type information
available for symbol
Product: Base System
Version: 15.0-CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
One of the examples on https://wiki.freebsd.org/DTrace/One-Liners does not work
anymore on a recent FreeBSD 15.0-CURRENT.
Let's consider this one-liner:
dtrace -n 'fbt::tcp_close:entry { @["TCP life span (seconds):"] =
quantize((uint32_t)(`ticks - args[0]->t_starttime) / `hz); }'
It errors out with:
dtrace: invalid probe specifier fbt::tcp_close:entry { @["TCP life span
(seconds):"] = quantize((uint32_t)(`ticks - args[0]->t_starttime) / `hz); }: in
action list: no symbolic type information is available for kernel`ticks: No
type information available for symbol
It seems like there is something wrong with `ticks. `hz works just fine.
I spoke with markj@ about it and he suggested that it might be related to
clock: Add a long ticks variable, ticksl
(https://cgit.freebsd.org/src/commit/?id=6b82130e6c9add4a8892ca897df5a0ec04663ea2).
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