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Hi, When accessing my Linux Mint system remotely with SSH or Samba everything halts for about 20 seconds, then works again. This happens very often. When I run the command: ...
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- 01-03-2014 #1
- Join Date
- Jun 2012
Remote connection with sudden delays
When accessing my Linux Mint system remotely with SSH or Samba everything halts for about 20 seconds, then works again. This happens very often.
When I run the command:
# ping -i 5 -s 1 192.168.0.1 > /dev/null &
Everything runs smoothly... But if I add this line to /etc/rc.local it has no effect... This bodge job worked perfectly with CentOS.
- 01-03-2014 #2
- 01-03-2014 #3
- Join Date
- Jun 2012
Thanks for your reply,
It seems the Ethernet connection is hibernating when inactive for a very short period of time and I feel this is a problem with my router. I want my system to constantly ping the router purely to keep the connection awake, not for statistical reasons.
The ping command is ignored on boot up scripts... Once I manually run the infinite ping command after boot up the system works like a dream.
[root@server]: netstat -s Ip: 1128 total packets received 0 forwarded 0 incoming packets discarded 1125 incoming packets delivered 1215 requests sent out 4 outgoing packets dropped 2 dropped because of missing route Icmp: 208 ICMP messages received 0 input ICMP message failed. ICMP input histogram: destination unreachable: 8 echo replies: 200 213 ICMP messages sent 0 ICMP messages failed ICMP output histogram: destination unreachable: 13 echo request: 200 IcmpMsg: InType0: 200 InType3: 8 OutType3: 13 OutType8: 200 Tcp: 2 active connections openings 33 passive connection openings 2 failed connection attempts 15 connection resets received 3 connections established 758 segments received 856 segments send out 23 segments retransmited 0 bad segments received. 25 resets sent Udp: 177 packets received 13 packets to unknown port received. 0 packet receive errors 131 packets sent UdpLite: TcpExt: 11 invalid SYN cookies received 2 TCP sockets finished time wait in fast timer 39 delayed acks sent 58 packets directly queued to recvmsg prequeue. 430 bytes directly received in process context from prequeue 112 packet headers predicted 257 acknowledgments not containing data payload received 43 predicted acknowledgements 8 other TCP timeouts TCPLossProbes: 4 TCPRcvCoalesce: 9 TCPOFOQueue: 3 IpExt: InNoRoutes: 3 InMcastPkts: 52 OutMcastPkts: 40 InBcastPkts: 63 OutBcastPkts: 47 InOctets: 108182 OutOctets: 276178 InMcastOctets: 5521 OutMcastOctets: 5173 InBcastOctets: 8637 OutBcastOctets: 6445
- 01-03-2014 #4
You could put ping into cron that would ping every minute at the shortest.