Re: V2.4 policy router operates faster/better than V2.6

["Jeremy M. Guthrie" <jeremy.guthrie@berbee.com>]

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My throughput dropped from 500 mbps to 8mbps.  8(


On Wednesday 12 January 2005 02:21 pm, Robert Olsson wrote:
> Jeremy M. Guthrie writes:
>  > Latest numbers after your patch Robert.
>
>  Did the RX interrupts go down?
>
>       --ro
>
>  > Wed Jan 12 14:05:36 CST 2005
>  > eth3      Link encap:Ethernet  HWaddr 00:02:B3:D5:7E:30
>  >           inet addr:10.253.0.1  Bcast:10.255.255.255  Mask:255.255.255.0
>  >           inet6 addr: fe80::202:b3ff:fed5:7e30/64 Scope:Link
>  >           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>  >           RX packets:21951496 errors:2412189 dropped:2412189
>  > overruns:377090 frame:0
>  >           TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
>  >           collisions:0 txqueuelen:1000
>  >           RX bytes:3455362966 (3295.2 Mb)  TX bytes:398 (398.0 b)
>  >           Base address:0x22a0 Memory:eff80000-effa0000
>  >
>  > 95b83157 150dc67c 00c734a1 000d2659 00000000 00000000 00000000 00000000
>  > 0073cee4
>  > 00044494 00000000 00000075 00000000 00000000 00000000 00000000 00000000
>  > 00097c77
>  > entries  in_hit in_slow_tot in_no_route in_brd in_martian_dst
>  > in_martian_src out_hit out_slow_tot out_slow_mc  gc_total gc_ignored
>  > gc_goal_miss gc_dst_overflow in_hlist_search out_hlist_search
>  > 0000f8cd  41403122 34c30e49 00000000 00000000 0000b0dd 00006a38 00000002
>  > 0027279d 0004147b 00000000 2f528a5f 2f42efcf 0000104f 00000000 81d262df
>  > 00c5d75c
>  > 0000f8cd  0000e332 0003238f 00000000 00000000 00004263 00000000 00000000
>  > 0000001e 000000c0 00000002 00004650 00004626 00000000 00000000 0016b879
>  > 0000024c
>  >
>  >
>  >
>  >
>  >
>  > Wed Jan 12 14:06:36 CST 2005
>  > eth3      Link encap:Ethernet  HWaddr 00:02:B3:D5:7E:30
>  >           inet addr:10.253.0.1  Bcast:10.255.255.255  Mask:255.255.255.0
>  >           inet6 addr: fe80::202:b3ff:fed5:7e30/64 Scope:Link
>  >           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>  >           RX packets:28053281 errors:2899869 dropped:2899869
>  > overruns:427243 frame:0
>  >           TX packets:5 errors:0 dropped:0 overruns:0 carrier:0
>  >           collisions:0 txqueuelen:1000
>  >           RX bytes:2607094069 (2486.3 Mb)  TX bytes:398 (398.0 b)
>  >           Base address:0x22a0 Memory:eff80000-effa0000
>  >
>  > 96154d20 150dc67c 00c78bc2 000d2659 00000000 00000000 00000000 00000000
>  > 0073d31d
>  > 00044499 00000000 00000075 00000000 00000000 00000000 00000000 00000000
>  > 00097d2d
>  > entries  in_hit in_slow_tot in_no_route in_brd in_martian_dst
>  > in_martian_src out_hit out_slow_tot out_slow_mc  gc_total gc_ignored
>  > gc_goal_miss gc_dst_overflow in_hlist_search out_hlist_search
>  > 0000fc6a  419ad196 34c586ba 00000000 00000000 0000b0e0 00006a40 00000002
>  > 002729c5 000414cb 00000000 2f5502ff 2f4567f7 0000104f 00000000 83790467
>  > 00c5e33c
>  > 0000fc6a  0000e333 00032393 00000000 00000000 00004263 00000000 00000000
>  > 0000001e 000000c0 00000002 00004650 00004626 00000000 00000000 0016b898
>  > 0000024c
>  >
>  > On Wednesday 12 January 2005 01:27 pm, Robert Olsson wrote:
>  > > Jeremy M. Guthrie writes:
>  > >  > >  > ETH3 Interrupts(calc'd from below):  1479968
>  > >  > >
>  > >  > >  Very strange...
>  > >  > >
>  > >  > >  eth3 is bound to CPU0 which in turn has all packet load... If we
>  > >  > > were to believe your CPU0 was saturated (due to the drops). We
>  > >  > > should see no (RX) interrupts on eth3. But there is a lot... one
>  > >  > > irq per every three packet. Why?
>  > >  >
>  > >  > I have no idea why it would be doing this.
>  > >
>  > >  Huh seems you didn't add the patch I sent. Below is diff from my
>  > > editor to your e1000_main.c
>  > >
>  > >        --ro
>  > >
>  > >
>  > > --- e1000_main.c.jmg 2005-01-12 20:14:08.324168072 +0100
>  > > +++ e1000_main.c 2005-01-12 20:17:24.777302656 +0100
>  > > @@ -2264,14 +2264,13 @@
>  > >   netdev->quota -= work_done;
>  > >
>  > >   /* if no Rx and Tx cleanup work was done, exit the polling mode */
>  > > - if(!tx_cleaned || (work_done < work_to_do) ||
>  > > -    !netif_running(netdev)) {
>  > > +  if( (!tx_cleaned && (work_done == 0)) || !netif_running(netdev)) {
>  > >  quit_polling: netif_rx_complete(netdev);
>  > >    e1000_irq_enable(adapter);
>  > >    return 0;
>  > >   }
>  > >
>  > > - return (work_done >= work_to_do);
>  > > + return 1;
>  > >  }
>  > >
>  > >  #endif
>  >
>  > --
>  >
>  > --------------------------------------------------
>  > Jeremy M. Guthrie        jeremy.guthrie@berbee.com
>  > Senior Network Engineer        Phone: 608-298-1061
>  > Berbee                           Fax: 608-288-3007
>  > 5520 Research Park Drive         NOC: 608-298-1102
>  > Madison, WI 53711

-- 

--------------------------------------------------
Jeremy M. Guthrie        jeremy.guthrie@berbee.com
Senior Network Engineer        Phone: 608-298-1061
Berbee                           Fax: 608-288-3007
5520 Research Park Drive         NOC: 608-298-1102
Madison, WI 53711

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