Date: Thu, 28 Oct 2010 23:21:11 +0300 From: =?windows-1251?B?yu7t/Oru4iDF4uPl7ejp?= <kes-kes@yandex.ru> To: freebsd-net@freebsd.org Subject: Polling slows down bandwidth Message-ID: <1519248747.20101028232111@yandex.ru>
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Hello,
w/0 polling:
serv1# ifconfig nfe0
nfe0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=10b<RXCSUM,TXCSUM,VLAN_MTU,TSO4>
ether 00:13:d4:ce:82:16
inet 10.11.8.17 netmask 0xfffffc00 broadcast 10.11.11.255
inet 10.11.15.15 netmask 0xffffff00 broadcast 10.11.15.255
inet 10.11.8.15 netmask 0xfffffc00 broadcast 10.11.11.255
media: Ethernet autoselect (1000baseTX <full-duplex>)
status: active
serv2# ifconfig re0
re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
options=389b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,WOL_UCAST,WOL_MCAST,WOL_MAGIC>
ether 00:1c:c0:c8:5a:4e
inet 192.168.255.254 netmask 0xffffffff broadcast 192.168.255.254
media: Ethernet autoselect (1000baseTX <full-duplex>)
status: active
serv1# systat -v
2 users Load 0.38 0.49 0.38 Oct 28 23:10
Mem:KB REAL VIRTUAL VN PAGER SWAP PAGER
Tot Share Tot Share Free in out in out
Act 324452 20196 490400 25112 938576 count
All 346596 21060 1074286k 28104 pages
Proc: Interrupts
r p d s w Csw Trp Sys Int Sof Flt cow 29953 total
1 47 71k 18 5022 27k 2029 1 zfod atkbd0 1
ozfod 7 ata0 irq14
62.4%Sys 18.7%Intr 0.4%User 0.0%Nice 18.4%Idle %ozfod 27944 nfe0 irq23
| | | | | | | | | | | daefr 2001 cpu0: time
===============================++++++++++ prcfr igb0 256
1 dtbuf 6 totfr 1 igb0 257
Namei Name-cache Dir-cache 100000 desvn react igb0 258
Calls hits % hits % 84106 numvn pdwak
5 5 100 24824 frevn pdpgs
intrn
Disks ad0 373808 wire
KB/t 16.00 292088 act
tps 7 417568 inact
MB/s 0.10 200 cache
%busy 0 938376 free
iperf result:
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-10.3 sec 450 MBytes 368 Mbits/sec
after enable POLLING:
serv1# ifconfig nfe0 polling
2 users Load 0.32 0.39 0.35 Oct 28 23:13
Mem:KB REAL VIRTUAL VN PAGER SWAP PAGER
Tot Share Tot Share Free in out in out
Act 324464 20196 490656 25112 938428 count
All 346624 21060 1074286k 28104 pages
Proc: Interrupts
r p d s w Csw Trp Sys Int Sof Flt cow 2006 total
1 47 28k 19 2691 6 2036 2 zfod atkbd0 1
ozfod 4 ata0 irq14
24.7%Sys 18.6%Intr 0.7%User 0.0%Nice 55.9%Idle %ozfod nfe0 irq23
| | | | | | | | | | | daefr 2001 cpu0: time
============++++++++++ prcfr igb0 256
10 dtbuf 2 totfr 1 igb0 257
Namei Name-cache Dir-cache 100000 desvn react igb0 258
Calls hits % hits % 84106 numvn pdwak
20 20 100 24824 frevn pdpgs
intrn
Disks ad0 373944 wire
KB/t 16.00 292104 act
tps 4 417564 inact
MB/s 0.07 200 cache
%busy 0 938228 free
I get bad results (((
[ ID] Interval Transfer Bandwidth
[ 4] 0.0-10.3 sec 180 MBytes 147 Mbits/sec
--
mailto:kes-kes@yandex.ru
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