netisr traffic bad distribution between CPUs

[Коньков Евгений]

# sysctl net.isr
net.isr.numthreads: 4
net.isr.maxprot: 16
net.isr.defaultqlimit: 256
net.isr.maxqlimit: 10240
net.isr.bindthreads: 0
net.isr.maxthreads: 4
net.isr.direct: 0
net.isr.direct_force: 0

and as you see in "netstat -Q"
>> Direct dispatch               disabled          n/a
>> Forced direct dispatch        disabled          n/a
>> Threads bound to CPUs         disabled          n/a


rigc> net.isr.dispatch: deferred?

>>
>> 
>> # netstat -Q
>> Configuration:
>> Setting                        Current        Limit
>> Thread count                         4            4
>> Default queue limit                256        10240
>> Direct dispatch               disabled          n/a
>> Forced direct dispatch        disabled          n/a
>> Threads bound to CPUs         disabled          n/a
>> 
>> Protocols:
>> Name   Proto QLimit Policy Flags
>> ip         1   1024   flow   ---
>> igmp       2    256 source   ---
>> rtsock     3    256 source   ---
>> arp        7    256 source   ---
>> ip6       10    256   flow   ---
>> 
>> Workstreams:
>> WSID CPU   Name     Len WMark   Disp'd  HDisp'd   QDrops   Queued
>> Handled
>>    0   0   ip       606  1024        0        0  2930711 2377098505
>> 2377097226
>>    0   0   igmp       0     0        0        0        0        0
>> 0
>>    0   0   rtsock     0   251        0        0        0   108579
>> 108579
>>    0   0   arp        0    17        0        0        0   205271
>> 205271
>>    0   0   ip6        0     1        0        0        0     1111
>> 1111
>>    1   1   ip        16   536        0        0        0 758322101
>> 758322085
>>    1   1   igmp       0     0        0        0        0        0
>> 0
>>    1   1   rtsock     0     0        0        0        0        0
>> 0
>>    1   1   arp        0     3        0        0        0   106860
>> 106860
>>    1   1   ip6        0     2        0        0        0     1254
>> 1254
>>    2   2   ip       155  1024        0        0   414966 2378645792
>> 2378645336
>>    2   2   igmp       0     0        0        0        0        0
>> 0
>>    2   2   rtsock     0     0        0        0        0        0
>> 0
>>    2   2   arp        0    11        0        0        0   320116
>> 320116
>>    2   2   ip6        0     1        0        0        0     3557
>> 3557
>>    3   3   ip         0  1024        0        0     5774 2108548645
>> 2108548645
>>    3   3   igmp       0     0        0        0        0        0
>> 0
>>    3   3   rtsock     0     0        0        0        0        0
>> 0
>>    3   3   arp        0    12        0        0        0   672284
>> 672284
>>    3   3   ip6        0     3        0        0        0    13870
>> 13870
>> 




-- 
С уважением,
 Коньков                          mailto:kes-kes at yandex.ru