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CloudVPS System (Net) Issue


Y3K-Daniel
08-05-2014, 04:26
I am wondering if anyone has come across this sort of issue before (not necessarily on OVH CloudVPS).

We are running TeamSpeak on Ubuntu, this usually work well. However we started noticing some packet drop, then it got a bit worse and speech in TS was getting distorted, followed by everyone getting disconnected every couple of minutes.
Using SSH was just as patchy, making it unusable, so I turned to Manager for KVM access and saw some errors: "eth0: tx hang"
At this point I did a reboot of the VPS, and after if came back up everything is back to normal.
The VPS would have had roughly 1 months uptime.

With our previous VPS providers we would have many months uptime, in fact I don't recall needing to reboot even once (except for updates), let alone have issues with what I am assuming is between the OS (Ubuntu) and Virtualisation (VMware) layers.

I do not want this to become a recurring issue...

This is a snippet from syslog and kern.log:
Code:
May 7 20:09:17 ts kernel: ------------[ cut here ]------------
May 7 20:09:17 ts kernel: WARNING: at net/sched/sch_generic.c:254 dev_watchdog+0x242/0x250()
May 7 20:09:17 ts kernel: Hardware name: VMware Virtual Platform
May 7 20:09:17 ts kernel: NETDEV WATCHDOG: eth0 (vmxnet3): transmit queue 1 timed out
May 7 20:09:17 ts kernel: Pid: 0, comm: swapper/0 Tainted: G W 3.8.13-xxxx-grs-ipv6-64-vps #2
May 7 20:09:17 ts kernel: Call Trace:
May 7 20:09:17 ts kernel: [] ? dev_watchdog+0x242/0x250
May 7 20:09:17 ts kernel: [] warn_slowpath_common+0x75/0xb0
May 7 20:09:17 ts kernel: [] warn_slowpath_fmt+0x41/0x50
May 7 20:09:17 ts kernel: [] ? native_sched_clock+0x15/0x80
May 7 20:09:17 ts kernel: [] dev_watchdog+0x242/0x250
May 7 20:09:17 ts kernel: [] ? pfifo_fast_enqueue+0xa0/0xa0
May 7 20:09:17 ts kernel: [] call_timer_fn.isra.30+0x2a/0x90
May 7 20:09:17 ts kernel: [] ? pfifo_fast_enqueue+0xa0/0xa0
May 7 20:09:17 ts kernel: [] run_timer_softirq+0x191/0x220
May 7 20:09:17 ts kernel: [] ? ktime_get+0x4d/0xd0
May 7 20:09:17 ts kernel: [] __do_softirq+0xa1/0x140
May 7 20:09:17 ts kernel: [] ? tick_program_event+0x1f/0x30
May 7 20:09:17 ts kernel: [] call_softirq+0x1c/0x30
May 7 20:09:17 ts kernel: [] do_softirq+0x6d/0xa0
May 7 20:09:17 ts kernel: [] irq_exit+0x95/0xa0
May 7 20:09:17 ts kernel: [] smp_apic_timer_interrupt+0x69/0xa0
May 7 20:09:17 ts kernel: [] apic_timer_interrupt+0x6a/0x70
May 7 20:09:17 ts kernel: [] ? sched_clock_idle_sleep_event+0x11/0x20
May 7 20:09:17 ts kernel: [] ? native_safe_halt+0x6/0x10
May 7 20:09:17 ts kernel: [] default_idle+0x21/0x40
May 7 20:09:17 ts kernel: [] cpu_idle+0xae/0xd0
May 7 20:09:17 ts kernel: [] rest_init+0x6d/0x70
May 7 20:09:17 ts kernel: [] 0xffffffff82230b92
May 7 20:09:17 ts kernel: [] ? 0xffffffff8223061d
May 7 20:09:17 ts kernel: [] 0xffffffff82230305
May 7 20:09:17 ts kernel: [] 0xffffffff82230409
May 7 20:09:17 ts kernel: ---[ end trace 2d93f97f2b44cab9 ]---
May 7 20:09:17 ts kernel: eth0: tx hang
May 7 20:09:17 ts kernel: eth0: resetting
May 7 20:09:17 ts kernel: eth0: intr type 3, mode 0, 3 vectors allocated
May 7 20:09:17 ts kernel: eth0: NIC Link is Up 10000 Mbps
May 7 20:09:27 ts kernel: eth0: tx hang
May 7 20:09:27 ts kernel: eth0: resetting
May 7 20:09:27 ts kernel: eth0: intr type 3, mode 0, 3 vectors allocated
May 7 20:09:27 ts kernel: eth0: NIC Link is Up 10000 Mbps
May 7 20:17:01 ts CRON[516]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
May 7 20:23:51 ts kernel: eth0: tx hang
May 7 20:23:51 ts kernel: eth0: resetting
May 7 20:23:51 ts kernel: eth0: intr type 3, mode 0, 3 vectors allocated
May 7 20:23:51 ts kernel: eth0: NIC Link is Up 10000 Mbps
May 7 20:24:01 ts kernel: eth0: tx hang
May 7 20:24:01 ts kernel: eth0: resetting
May 7 20:24:01 ts kernel: eth0: intr type 3, mode 0, 3 vectors allocated
May 7 20:24:01 ts kernel: eth0: NIC Link is Up 10000 Mbps
May 7 20:40:53 ts kernel: eth0: tx hang
May 7 20:40:53 ts kernel: eth0: resetting
May 7 20:40:53 ts kernel: eth0: intr type 3, mode 0, 3 vectors allocated
May 7 20:40:53 ts kernel: eth0: NIC Link is Up 10000 Mbps
Any help with this would be greatly appreciated!