diff --git a/synapse/metrics/__init__.py b/synapse/metrics/__init__.py
index d7bcad8a8a..943d637459 100644
--- a/synapse/metrics/__init__.py
+++ b/synapse/metrics/__init__.py
@@ -17,7 +17,7 @@
from __future__ import absolute_import
import logging
-from resource import getrusage, getpagesize, RUSAGE_SELF
+from resource import getrusage, RUSAGE_SELF
import functools
import os
import stat
@@ -100,7 +100,6 @@ def render_all():
# process resource usage
rusage = None
-PAGE_SIZE = getpagesize()
def update_resource_metrics():
@@ -113,8 +112,8 @@ resource_metrics = get_metrics_for("process.resource")
resource_metrics.register_callback("utime", lambda: rusage.ru_utime * 1000)
resource_metrics.register_callback("stime", lambda: rusage.ru_stime * 1000)
-# pages
-resource_metrics.register_callback("maxrss", lambda: rusage.ru_maxrss * PAGE_SIZE)
+# kilobytes
+resource_metrics.register_callback("maxrss", lambda: rusage.ru_maxrss * 1024)
TYPES = {
stat.S_IFSOCK: "SOCK",
@@ -131,6 +130,10 @@ def _process_fds():
counts = {(k,): 0 for k in TYPES.values()}
counts[("other",)] = 0
+ # Not every OS will have a /proc/self/fd directory
+ if not os.path.exists("/proc/self/fd"):
+ return counts
+
for fd in os.listdir("/proc/self/fd"):
try:
s = os.stat("/proc/self/fd/%s" % (fd))
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