FS#40244 - [linux] 3.14.x xen_netfront: xennet: skb rides the rocket: 19 slots
Attached to Project:
Arch Linux
Opened by Steven Haigh (CRCinAU) - Tuesday, 06 May 2014, 17:00 GMT
Last edited by Tobias Powalowski (tpowa) - Wednesday, 13 August 2014, 15:38 GMT
Opened by Steven Haigh (CRCinAU) - Tuesday, 06 May 2014, 17:00 GMT
Last edited by Tobias Powalowski (tpowa) - Wednesday, 13 August 2014, 15:38 GMT
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Details
Description:
When using bittorrent in a Xen Arch VM (DomU) I frequently see the following in dmesg: xen_netfront: xennet: skb rides the rocket: 19 slots I believe this was sorted quite a while ago in other builds, but it seems to happen quite often on kernel 3.14.2 Additional info: * package version(s) Linux version 3.14.2-1-ARCH (nobody@var-lib-archbuild-testing-x86_64-tobias) (gcc version 4.9.0 (GCC) ) #1 SMP PREEMPT Sun Apr 27 11:28:44 CEST 2014 dmesg: [ 7432.398096] xen_netfront: xennet: skb rides the rocket: 19 slots [ 7434.270870] xen_netfront: xennet: skb rides the rocket: 19 slots [ 7434.782199] xen_netfront: xennet: skb rides the rocket: 19 slots [ 7435.184794] xen_netfront: xennet: skb rides the rocket: 19 slots [ 7437.530677] xen_netfront: xennet: skb rides the rocket: 19 slots [ 7437.973905] xen_netfront: xennet: skb rides the rocket: 19 slots [ 7438.383947] xen_netfront: xennet: skb rides the rocket: 19 slots [ 7438.897083] xen_netfront: xennet: skb rides the rocket: 19 slots [ 7444.679331] xen_netfront: xennet: skb rides the rocket: 19 slots [ 7456.052666] xen_netfront: xennet: skb rides the rocket: 19 slots [ 7478.772660] xen_netfront: xennet: skb rides the rocket: 19 slots [ 7524.319326] xen_netfront: xennet: skb rides the rocket: 19 slots [13137.495461] xen_netfront: xennet: skb rides the rocket: 19 slots [13138.289602] xen_netfront: xennet: skb rides the rocket: 19 slots [13138.962369] xen_netfront: xennet: skb rides the rocket: 19 slots [13139.417978] xen_netfront: xennet: skb rides the rocket: 19 slots [13139.921259] xen_netfront: xennet: skb rides the rocket: 19 slots [13140.265203] xen_netfront: xennet: skb rides the rocket: 19 slots [13140.807701] xen_netfront: xennet: skb rides the rocket: 19 slots [13141.230516] xen_netfront: xennet: skb rides the rocket: 19 slots [13141.663210] xen_netfront: xennet: skb rides the rocket: 19 slots [13142.128654] xen_netfront: xennet: skb rides the rocket: 19 slots [13143.768806] net_ratelimit: 2 callbacks suppressed [13143.768811] xen_netfront: xennet: skb rides the rocket: 19 slots [13145.465446] xen_netfront: xennet: skb rides the rocket: 19 slots [13148.858763] xen_netfront: xennet: skb rides the rocket: 19 slots [13155.652093] xen_netfront: xennet: skb rides the rocket: 19 slots [13169.225428] xen_netfront: xennet: skb rides the rocket: 19 slots [13196.372109] xen_netfront: xennet: skb rides the rocket: 19 slots |
This task depends upon
http://www.gossamer-threads.com/lists/xen/devel/266980
This is fixed by 29c7787075 (mm: use paravirt friendly ops for NUMA
hinting ptes) which is tagged for stable but hasn't yet been picked up
for 3.14.y.
You can also work around it by disabling CONFIG_NUMA_BALANCING which
doesn't work with Xen PV guests anyway.
David
Link to more precise information:
https://github.com/jcalvinowens/linux-gsoc/commit/29c7787075c92ca8af353acd5301481e6f37082f