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Diffstat (limited to 'testsuite/systemtap.examples/keyword-index.txt')
| -rw-r--r-- | testsuite/systemtap.examples/keyword-index.txt | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/testsuite/systemtap.examples/keyword-index.txt b/testsuite/systemtap.examples/keyword-index.txt index 4778afc7..d3d66fe2 100644 --- a/testsuite/systemtap.examples/keyword-index.txt +++ b/testsuite/systemtap.examples/keyword-index.txt @@ -250,6 +250,33 @@ keywords: io scheduler backtrace = LOCKING = +locks/bkl.stp - Tracing Contention on Big Kernel Lock (BKL) +keywords: locking + + The bkl.stp script can help determine whether the Big Kernel Lock + (BKL) is causing serialization on a multiprocessor system due to + excessive contention of the BKL. The bkl.stp script takes one + argument which is the number of processes waiting for the Big Kernel + Lock (BKL). When the number of processes waiting for the BKL is + reached or exceeded, the script will print a time stamp, the number + of processes waiting for the BKL, the holder of the BKL, and the + amount of time the BKL was held. + + +locks/bkl_stats.stp - Per Process Statistics on Big Kernel Lock (BKL) Use +keywords: locking + + The bkl_stats.stp script can indicate which processes have excessive + waits for the Big Kernel Lock (BKL) and which processes are taking + the BKL for long periods of time. The bkl_stats.stp script prints + lists of all the processes that require the BKL. Every five seconds + two tables are printed out. The first table lists the processes that + waited for the BKL followed by the number of times that the process + waited, the minimum time of the wait, the average and the maximum + time waited. The second table lists has similar information for the + time spent holding the lock for each of the processes. + + process/futexes.stp - System-Wide Futex Contention keywords: syscall locking futex |