High CPU Usage NRserver (not related to high # of clients)

phaedrus54 · **Joined:** Sat Mar 12, 2011 1:03 pm **Posts:** 5

Hi Luke,

Noticed my server that hosts NRServer running very slowly today. Though offending process is the NRService binary.

Server Specs:
Dual Atom Processor
Ubuntu 10.04 LTS Server (no gui)
2GB Ram

Network Config:
Linux box runs NRServer & Client
2 Windows boxes running Client
2 other Debian boxes running Client

Ran HTOP to check CPU & memory usage:

Code:

  1  [|||||||||||||||||||||||||  76.3%]     Tasks: 452 total, 4 running
  2  [||||||||||||||||||||||||||100.0%]     Load average: 5.21 5.66 4.93
  3  [|||||||||||||||||||||||    68.8%]     Uptime: 6 days, 21:02:19
  4  [|||                         4.3%]
  Mem[|||||||||||||||||||||1893/2000MB]
  Swp[|||||||||||||||||    3053/5857MB]

  PID USER     PRI  NI  VIRT   RES   SHR S CPU% MEM%   TIME+  Command
 2255 user    20   0  148M  3128  1420 R 91.0  0.2 163h11:53 nrservice
 2589 user    20   0 4106M 1198M  4432 R 70.0 59.9 122h21:25 /home/user/.dropbox
 2265 user    20   0 4106M 1198M  4432 S 34.0 59.9 47h57:59 /home/user/.dropbox-
11586 user    20   0 19896  1728  1100 R  9.0  0.1  0:01.39 htop

Version of NRService:

Code:

NeoRouter Free [Version 1.3.0.2526]
Copyright (C) 2011 NeoRouter Inc.

Usage: nrservice [-dbroot DBROOT] [--help]
-dbroot: specify a writable path to store user data.

I quickly browsed forum but didn't see anything jump out at me on the topic. I realize this is a free product and thank you for taking the time to respond. I'm looking forward to replacing hamachi with NeoRouter as soon as I can verify that it's a suitable replacement.

Any guesses what's up?

luke · **Joined:** Mon Dec 22, 2008 10:19 pm **Posts:** 436

hi phaedrus54,

NRService is part of nrclient package, and it is responsible to join a client computer to the VLAN and send/receive data to peer computers via P2P or relay. It is different from NRServer, which is responsible to receive incoming connections from all clients and mediate connections among clients.

NRService uses more CPU when it is sending/receiving large amount of data, mainly because it encrypts/decrypts the data using openssl. Please try to find out which program is most actively transferring over the VLAN, reduce its network traffic and see if nrservice's CPU usage comes down.

Thanks,
Luke

phaedrus54 · **Joined:** Sat Mar 12, 2011 1:03 pm **Posts:** 5

Hmm, wondering if a combo of Dropbox and NR is the culprit then. Wouldn't expect dropbox sync to be utilizing much VLAN but it could be treating it as a local network and syncing through that to save bandwidth rather than uploading to cloud and redownloading.

I'll keep an eye on it and report back if/when I have more info.

Thank you for the quick response, you guys are awesome.

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High CPU Usage NRserver (not related to high # of clients)

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