lkml.org 
[lkml]   [2013]   [May]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [Patch v2] skbuff: Hide GFP_ATOMIC page allocation failures for dropped packets
On 05/27/2013 03:41 PM, Francois Romieu wrote:
> atomlin@redhat.com <atomlin@redhat.com> :
> [...]
>> Failed GFP_ATOMIC allocations by the network stack result in dropped
>> packets, which will be received on a subsequent retransmit, and an
>> unnecessary, noisy warning with a kernel backtrace.
>>
>> These warnings are harmless, but they still cause users to panic and
>> file bug reports over dropped packets. It would be better to hide the
>> failed allocation warnings and backtraces, and let retransmits handle
>> dropped packets quietly.
>
> Linux VM may be perfect but device drivers do stupid things.
>
> Please don't paper over it just because some shit ends in your backyard.

We should rate-limit these messages at least. When a system is low on memory
the logs can quickly fill up with useless OOM messages, further slowing
the system...

Ben

>


--
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc http://www.candelatech.com



\
 
 \ /
  Last update: 2013-05-28 18:42    [W:0.496 / U:0.092 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site