dummynet dropping too many packets

[rihad]

Robert Watson wrote:
> 
> On Wed, 7 Oct 2009, rihad wrote:
> 
>>> snapshot of the top -SH output in the steady state?  Let top run for 
>>> a few minutes and then copy/paste the first 10-20 lines into an e-mail.
>>>
>> Sure. Mind you: now there's only 1800 entries in each of the two ipfw 
>> tables, so any drops have stopped. But it only takes another 200-300 
>> entries to start dropping.
> 
> Could you do the same in the net.isr.direct=1 configuration so we can 
> compare?
> 

net.isr.direct=1:

last pid: 92152;  load averages:  0.99,  1.18,  1.15 
                             up 1+01:42:28  14:53:09
162 processes: 9 running, 136 sleeping, 17 waiting
CPU:  2.1% user,  0.0% nice,  5.4% system,  7.0% interrupt, 85.5% idle
Mem: 1693M Active, 1429M Inact, 447M Wired, 197M Cache, 214M Buf, 170M Free
Swap: 2048M Total, 12K Used, 2048M Free

   PID USERNAME   PRI NICE   SIZE    RES STATE  C   TIME   WCPU COMMAND
    12 root       171 ki31     0K    16K CPU6   6  24.3H 100.00% idle: cpu6
    13 root       171 ki31     0K    16K CPU5   5  23.8H 95.95% idle: cpu5
    14 root       171 ki31     0K    16K CPU4   4  23.4H 93.12% idle: cpu4
    16 root       171 ki31     0K    16K CPU2   2  23.0H 90.19% idle: cpu2
    11 root       171 ki31     0K    16K CPU7   7  24.2H 87.26% idle: cpu7
    15 root       171 ki31     0K    16K CPU3   3  22.8H 86.18% idle: cpu3
    18 root       171 ki31     0K    16K RUN    0  20.6H 84.96% idle: cpu0
    17 root       171 ki31     0K    16K CPU1   1 933:23 47.85% idle: cpu1
    29 root       -68    -     0K    16K WAIT   1 522:02 46.88% irq256: bce0
   465 root       -68    -     0K    16K -      7  55:15 12.65% dummynet
    31 root       -68    -     0K    16K WAIT   2  57:29  4.74% irq257: bce1
    21 root       -44    -     0K    16K WAIT   0  34:55  4.64% swi1: net
    19 root       -32    -     0K    16K WAIT   4  51:41  3.96% swi4: 
clock sio
    30 root       -64    -     0K    16K WAIT   6   5:43  0.73% irq16: mfi0


Almost 2000 entries in the table, traffic load= 420-430 mbps, drops 
haven't yet started.

Previous net.isr.direct=0:
> 
>>
>> 155 processes: 10 running, 129 sleeping, 16 waiting
>> CPU:  2.4% user,  0.0% nice,  2.0% system,  9.3% interrupt, 86.2% idle
>> Mem: 1691M Active, 1491M Inact, 454M Wired, 130M Cache, 214M Buf, 170M 
>> Free
>> Swap: 2048M Total, 12K Used, 2048M Free
>>
>>  PID USERNAME   PRI NICE   SIZE    RES STATE  C   TIME   WCPU COMMAND
>>   15 root       171 ki31     0K    16K CPU3   3  22.4H 97.85% idle: cpu3
>>   14 root       171 ki31     0K    16K CPU4   4  23.0H 96.29% idle: cpu4
>>   12 root       171 ki31     0K    16K CPU6   6  23.8H 94.58% idle: cpu6
>>   16 root       171 ki31     0K    16K CPU2   2  22.5H 90.72% idle: cpu2
>>   13 root       171 ki31     0K    16K CPU5   5  23.4H 90.58% idle: cpu5
>>   18 root       171 ki31     0K    16K RUN    0  20.3H 85.60% idle: cpu0
>>   17 root       171 ki31     0K    16K CPU1   1 910:03 78.37% idle: cpu1
>>   11 root       171 ki31     0K    16K CPU7   7  23.8H 65.62% idle: cpu7
>>   21 root       -44    -     0K    16K CPU7   7  19:03 48.34% swi1: net
>>   29 root       -68    -     0K    16K WAIT   1 515:49 19.63% irq256: 
>> bce0
>>   31 root       -68    -     0K    16K WAIT   2  56:05  5.52% irq257: 
>> bce1
>>   19 root       -32    -     0K    16K WAIT   5  50:05  3.86% swi4: 
>> clock sio
>>  983 flowtools   44    0 12112K  6440K select 0  13:20  0.15% 
>> flow-capture
>>  465 root       -68    -     0K    16K -      3  51:19  0.00% dummynet
>>    3 root        -8    -     0K    16K -      1   7:41  0.00% g_up
>>    4 root        -8    -     0K    16K -      2   7:14  0.00% g_down
>>   30 root       -64    -     0K    16K WAIT   6   5:30  0.00% irq16: mfi0
>>
>>
> 
>