Hello,
It used to be that one could easily run a Tor relay in 512MB of RAM with lots
of headroom remaining. However, here is what I am now seeing on some nodes:
-----
KiB Mem: 508936 total, 503728 used, 5208 free, 48 buffers
KiB Swap: 1048572 total, 278072 used, 770500 free, 3680 cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
14891 debian-t 20 0 748m 339m 2040 R 50.9 68.2 1159:23 tor
17994 root 20 0 71172 840 736 S 0.0 0.2 0:00.12 sshd
18012 root 20 0 23168 888 608 R 0.0 0.2 0:00.01 top
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# free -m
total used free shared buffers cached
Mem: 497 491 5 0 0 4
-/+ buffers/cache: 487 9
Swap: 1023 265 758
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These readings also seem a bit bizzare to me, in "top" tor uses only 339MB of
resident memoory, and there are no other high-RAM-usage programs active (the
bit from 'top' that I pasted is sorted by RAM usage). But the overall RAM usage
is 487MB.
Can something be done about this without reducing the throughput of the relay?
At the moment I would just kill Tor and start it back, it will take quite a while
to climb back to those levels of RAM usage.
Running Tor 0.2.4.16-rc on Debian Wheezy.
Sep 05 06:25:03.000 [notice] Tor 0.2.4.16-rc (git-dcf6b6d7dda9ffbd) opening new log file.
Sep 05 10:46:51.000 [notice] Heartbeat: Tor's uptime is 18:00 hours, with 23108 circuits open. I've sent 227.68 GB and received 227.17 GB.
Sep 05 10:46:51.000 [notice] Average packaged cell fullness: 99.042%
Sep 05 10:46:51.000 [notice] TLS write overhead: 9%
Sep 05 12:44:40.000 [warn] Your computer is too slow to handle this many circuit creation requests! Please consider using the MaxAdvertisedBandwidth config option or choosing a more restricted exit policy.
Sep 05 13:01:14.000 [warn] Your computer is too slow to handle this many circuit creation requests! Please consider using the MaxAdvertisedBandwidth config option or choosing a more restricted exit policy. [7021 similar message(s) suppressed in last 60 seconds]
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With respect,
Roman
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