diff options
Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 15 |
1 files changed, 13 insertions, 2 deletions
@@ -1,12 +1,23 @@ * What's new +- Symbol tables and unwind (backtracing) data support were formerly + compiled in for all probed modules as identified by the script + (kernel; module("name"); process("file")) plus those listed by the + stap "-d BINARY" option. Now, this data is included only if the systemtap + script uses tapset functions like probefunc() or backtrace() that require + such information. This shrinks the probe modules considerably for the rest. + - Per-pass verbosity control is available with the new "--vp {N}+" option. - "stap --vp 040" adds 4 units of -v verbosity only to pass 2. + "stap --vp 040" adds 4 units of -v verbosity only to pass 2. This is useful + for diagnosing errors from one pass without excessive verbosity from others. - Most probe handlers now run with interrupts enabled, for improved system responsiveness and less probing overhead. This may result in more skipped probes, for example if a reentrant probe handler - is attempted from within an interrupt handler. + is attempted from within an interrupt handler. It may also make the + systemtap overload detection facility more likely to be triggered, as + interrupt handlers' run time would be included in the self-assessed + overhead of running probe handlers. * What's new in version 0.8 |