3137: Refactor stats to record keep & fuse operations as well as bytes.

[arvados.git] / services / fuse / bin / arv-mount

diff --git a/services/fuse/bin/arv-mount b/services/fuse/bin/arv-mount
index d15553456a2238fcee7d32d926517ada43d05785..96116a8ee0053e0ff613f2aa330830ec06cfb1d5 100755 (executable)
--- a/services/fuse/bin/arv-mount
+++ b/services/fuse/bin/arv-mount
@@ -16,6 +16,61 @@ import arvados.keep
 
 logger = logging.getLogger('arvados.arv-mount')
 
+class Stat(object):
+    def __init__(self, prefix, interval,
+                 egr_name, ing_name,
+                 egr_func, ing_func):
+        self.prefix = prefix
+        self.interval = interval
+        self.egr_name = egr_name
+        self.ing_name = ing_name
+        self.egress = egr_func
+        self.ingress = ing_func
+        self.egr = self.egress()
+        self.ing = self.ingress()
+
+    def update(self):
+        self.egr_prev = self.egr
+        self.ing_prev = self.ing
+        self.egr = self.egress()
+        self.ing = self.ingress()
+
+        delta = " -- interval %.4f seconds %d %s %d %s" % (self.interval,
+                                                           self.egr-self.egr_prev,
+                                                           self.egr_name,
+                                                           self.ing-self.ing_prev,
+                                                           self.ing_name)
+
+        sys.stderr.write("crunchstat: %s %d %s %d %s%s\n" % (self.prefix,
+                                                             self.egr,
+                                                             self.egr_name,
+                                                             self.ing,
+                                                             self.ing_name,
+                                                             delta))
+
+def statlogger(keep, ops):
+    interval = 10
+    calls = Stat("keepcalls", interval, "put", "get",
+                 keep.put_counter.get,
+                 keep.get_counter.get)
+    net = Stat("net:keep0", interval, "tx", "rx",
+               keep.upload_counter.get,
+               keep.download_counter.get)
+    fuseops = Stat("fuseops", interval,"write", "read",
+                   ops.write_ops_counter.get,
+                   ops.read_ops_counter.get)
+    blk = Stat("blkio:0:0", interval, "write", "read",
+               ops.write_counter.get,
+               ops.read_counter.get)
+
+    while True:
+        time.sleep(interval)
+        calls.update()
+        net.update()
+        fuseops.update()
+        blk.update()
+
+
 if __name__ == '__main__':
     # Handle command line parameters
     parser = argparse.ArgumentParser(
@@ -55,6 +110,8 @@ with "--".
     parser.add_argument('--read-only', action='store_false', help="Mount will be read only (default)", dest="enable_write", default=False)
     parser.add_argument('--read-write', action='store_true', help="Mount will be read-write", dest="enable_write", default=False)
 
+    parser.add_argument('--stats', action='store_true', help="Write stats to stderr", default=False)
+
     parser.add_argument('--exec', type=str, nargs=argparse.REMAINDER,
                         dest="exec_args", metavar=('command', 'args', '...', '--'),
                         help="""Mount, run a command, then unmount and exit""")
@@ -101,6 +158,11 @@ with "--".
         api = ThreadSafeApiCache(apiconfig=arvados.config.settings(),
                                  keep_params={"block_cache": arvados.keep.KeepBlockCache(args.file_cache)})
 
+        if args.stats:
+            statsthread = threading.Thread(target=statlogger, args=(api.keep, operations))
+            statsthread.daemon = True
+            statsthread.start()
+
         usr = api.users().current().execute(num_retries=args.retries)
         now = time.time()
         dir_class = None