diff options
Diffstat (limited to 'NEWS')
| -rw-r--r-- | NEWS | 33 |
1 files changed, 19 insertions, 14 deletions
@@ -1,5 +1,10 @@ * What's new +- The overlapping process.* tapsets are now separated. Those probe points + documented in stapprobes(3stap) remain the same. Those that were formerly + in stapprobes.process(3stap) have been renamed to kprocess, to reflect + their kernel perspective on processes. + - The --skip-badvars option now also suppresses run-time error messages that would otherwise result from erroneous memory accesses. Such accesses can originate from $context expressions fueled by @@ -7,20 +12,20 @@ * What's new in version 0.9.5 - - New probes process().insn and process().insn.block that allows - inspection of the process after each instruction or block of - instructions executed. So to count the total number of instructions - a process executes during a run do something like: - $ stap -e 'global steps; probe process("/bin/ls").insn {steps++} - probe end {printf("Total instructions: %d\n", steps);}' \ - -c /bin/ls - This feature can slow down execution of a process somewhat. - - - Systemtap probes and function man pages extracted from the tapsets - are now available under 3stap. To show the page for probe vm.pagefault - or the stap function pexecname do: - $ man 3stap vm.pagefault - $ man 3stap pexecname +- New probes process().insn and process().insn.block that allows + inspection of the process after each instruction or block of + instructions executed. So to count the total number of instructions + a process executes during a run do something like: + $ stap -e 'global steps; probe process("/bin/ls").insn {steps++} + probe end {printf("Total instructions: %d\n", steps);}' \ + -c /bin/ls + This feature can slow down execution of a process somewhat. + +- Systemtap probes and function man pages extracted from the tapsets + are now available under 3stap. To show the page for probe vm.pagefault + or the stap function pexecname do: + $ man 3stap vm.pagefault + $ man 3stap pexecname - Kernel tracepoints are now supported for probing predefined kernel events without any debuginfo. Tracepoints incur less overhead than |