diff options
Diffstat (limited to 'synapse/metrics/process_collector.py')
| -rw-r--r-- | synapse/metrics/process_collector.py | 30 |
1 files changed, 22 insertions, 8 deletions
diff --git a/synapse/metrics/process_collector.py b/synapse/metrics/process_collector.py index 4145694c5c..f31aa79c5c 100644 --- a/synapse/metrics/process_collector.py +++ b/synapse/metrics/process_collector.py @@ -41,9 +41,18 @@ TYPES = { stat.S_IFIFO: "FIFO", } +# Field indexes from /proc/self/stat, taken from the proc(5) manpage +STAT_FIELDS = { + "utime": 14, + "stime": 15, + "starttime": 22, + "vsize": 23, + "rss": 24, +} + rusage = None -stats = None +stats = {} fd_counts = None # In order to report process_start_time_seconds we need to know the @@ -66,7 +75,12 @@ def update_resource_metrics(): with open("/proc/self/stat") as s: line = s.read() # line is PID (command) more stats go here ... - stats = line.split(") ", 1)[1].split(" ") + raw_stats = line.split(") ", 1)[1].split(" ") + + for (name, index) in STAT_FIELDS.iteritems(): + # subtract 3 from the index, because proc(5) is 1-based, and + # we've lost the first two fields in PID and COMMAND above + stats[name] = int(raw_stats[index - 3]) global fd_counts fd_counts = _process_fds() @@ -119,24 +133,24 @@ def register_process_collector(): if HAVE_PROC_SELF_STAT: process_metrics.register_callback( - "cpu_user_seconds_total", lambda: float(stats[11]) / TICKS_PER_SEC + "cpu_user_seconds_total", lambda: float(stats["utime"]) / TICKS_PER_SEC ) process_metrics.register_callback( - "cpu_system_seconds_total", lambda: float(stats[12]) / TICKS_PER_SEC + "cpu_system_seconds_total", lambda: float(stats["stime"]) / TICKS_PER_SEC ) process_metrics.register_callback( - "cpu_seconds_total", lambda: (float(stats[11]) + float(stats[12])) / TICKS_PER_SEC + "cpu_seconds_total", lambda: (float(stats["utime"]) + float(stats["stime"])) / TICKS_PER_SEC ) process_metrics.register_callback( - "virtual_memory_bytes", lambda: int(stats[20]) + "virtual_memory_bytes", lambda: int(stats["vsize"]) ) process_metrics.register_callback( - "resident_memory_bytes", lambda: int(stats[21]) * BYTES_PER_PAGE + "resident_memory_bytes", lambda: int(stats["rss"]) * BYTES_PER_PAGE ) process_metrics.register_callback( - "start_time_seconds", lambda: boot_time + int(stats[19]) / TICKS_PER_SEC + "start_time_seconds", lambda: boot_time + int(stats["starttime"]) / TICKS_PER_SEC ) if HAVE_PROC_SELF_FD: |