From: Wenji Wu <wenji@fnal.gov>
To: John Heffner <johnwheffner@gmail.com>
Cc: "Ilpo Järvinen" <ilpo.jarvinen@helsinki.fi>,
Netdev <netdev@vger.kernel.org>
Subject: Re: RE: A Linux TCP SACK Question
Date: Tue, 15 Apr 2008 11:39:14 -0500 [thread overview]
Message-ID: <fcb2d79550b4.480493e2@fnal.gov> (raw)
In-Reply-To: <1e41a3230804141748v2bf1f32bsc80307c9390c222@mail.gmail.com>
My fault, resent.
> Sill the mystery remains as to why *both* are going so slowly. You
> mentioned you're using a web100 kernel. What are the final values of
> all the variables for the connections (grab with readall)?
kernel 2.6.24
"echo 1 > /proc/sys/net/ipv4/tcp_no_metric_save"
..............................................................................................
WIth SACK On, throughput: 179Mbps
Connection 4 (198.2.1.2 56648 131.225.2.16 5001)
State 1
SACKEnabled 3
TimestampsEnabled 1
NagleEnabled 1
ECNEnabled 0
SndWinScale 11
RcvWinScale 7
ActiveOpen 1
MSSRcvd 0
WinScaleRcvd 11
WinScaleSent 7
PktsOut 154770
DataPktsOut 154770
DataBytesOut 226294264
PktsIn 149398
DataPktsIn 0
DataBytesIn 0
SndUna 930060039
SndNxt 930060039
SndMax 930060039
ThruBytesAcked 224092186
SndISS 705967853
RcvNxt 4282199280
ThruBytesReceived 0
RecvISS 4282199280
StartTimeSec 1208277286
StartTimeUsec 813964
Duration 13984145
SndLimTransSender 3
SndLimBytesSender 7208
SndLimTimeSender 3107
SndLimTransCwnd 2
SndLimBytesCwnd 226287056
SndLimTimeCwnd 10003734
SndLimTransRwin 0
SndLimBytesRwin 0
SndLimTimeRwin 0
SlowStart 0
CongAvoid 0
CongestionSignals 2
OtherReductions 19402
X_OtherReductionsCV 0
X_OtherReductionsCM 19402
CongestionOverCount 13
CurCwnd 4344
MaxCwnd 102808
CurSsthresh 94894680
LimCwnd 4294965848
MaxSsthresh 94894680
MinSsthresh 7240
FastRetran 2
Timeouts 0
SubsequentTimeouts 0
CurTimeoutCount 0
AbruptTimeouts 0
PktsRetrans 7
BytesRetrans 10136
DupAcksIn 41940
SACKsRcvd 118692
SACKBlocksRcvd 189919
PreCongSumCwnd 91224
PreCongSumRTT 6
PostCongSumRTT 7
PostCongCountRTT 2
ECERcvd 0
SendStall 0
QuenchRcvd 0
RetranThresh 30
NonRecovDA 0
AckAfterFR 0
DSACKDups 0
SampleRTT 3
SmoothedRTT 3
RTTVar 50
MaxRTT 4
MinRTT 2
SumRTT 142655
CountRTT 43932
CurRTO 203
MaxRTO 204
MinRTO 203
CurMSS 1448
MaxMSS 1448
MinMSS 524
X_Sndbuf 206976
X_Rcvbuf 87380
CurRetxQueue 0
MaxRetxQueue 0
CurAppWQueue 130320
MaxAppWQueue 237472
CurRwinSent 5888
MaxRwinSent 5888
MinRwinSent 5840
LimRwin 0
DupAcksOut 0
CurReasmQueue 0
MaxReasmQueue 0
CurAppRQueue 0
MaxAppRQueue 0
X_rcv_ssthresh 5840
X_wnd_clamp 64087
X_dbg1 5888
X_dbg2 536
X_dbg3 5840
X_dbg4 0
CurRwinRcvd 3137536
MaxRwinRcvd 3137536
MinRwinRcvd 17896
LocalAddressType 1
LocalAddress 198.2.1.2
LocalPort 56648
RemAddress 131.225.2.16
RemPort 5001
X_RcvRTT 0
[root@gw004 ipv4]#
..................................................................
WIth SACK Off:
Throughput: 258Mbps
Connection 5 (198.2.1.2 43578 131.225.2.16 5001)
State 1
SACKEnabled 0
TimestampsEnabled 1
NagleEnabled 1
ECNEnabled 0
SndWinScale 11
RcvWinScale 7
ActiveOpen 1
MSSRcvd 0
WinScaleRcvd 11
WinScaleSent 7
PktsOut 223011
DataPktsOut 223011
DataBytesOut 326318584
PktsIn 216404
DataPktsIn 0
DataBytesIn 0
SndUna 4002973902
SndNxt 4002973902
SndMax 4002973902
ThruBytesAcked 322904090
SndISS 3680069812
RcvNxt 2942495629
ThruBytesReceived 0
RecvISS 2942495629
StartTimeSec 1208277475
StartTimeUsec 779859
Duration 18149747
SndLimTransSender 4
SndLimBytesSender 10456
SndLimTimeSender 3787
SndLimTransCwnd 3
SndLimBytesCwnd 326308128
SndLimTimeCwnd 10006059
SndLimTransRwin 0
SndLimBytesRwin 0
SndLimTimeRwin 0
SlowStart 0
CongAvoid 0
CongestionSignals 3
OtherReductions 13166
X_OtherReductionsCV 0
X_OtherReductionsCM 13166
CongestionOverCount 37
CurCwnd 10136
MaxCwnd 173760
CurSsthresh 94894680
LimCwnd 4294965848
MaxSsthresh 94894680
MinSsthresh 46336
FastRetran 3
Timeouts 0
SubsequentTimeouts 0
CurTimeoutCount 0
AbruptTimeouts 0
PktsRetrans 7
BytesRetrans 10136
DupAcksIn 59484
SACKsRcvd 0
SACKBlocksRcvd 0
PreCongSumCwnd 286704
PreCongSumRTT 12
PostCongSumRTT 11
PostCongCountRTT 3
ECERcvd 0
SendStall 0
QuenchRcvd 0
RetranThresh 23
NonRecovDA 0
AckAfterFR 0
DSACKDups 0
SampleRTT 4
SmoothedRTT 4
RTTVar 50
MaxRTT 6
MinRTT 2
SumRTT 159332
CountRTT 48291
CurRTO 204
MaxRTO 204
MinRTO 203
CurMSS 1448
MaxMSS 1448
MinMSS 524
X_Sndbuf 451584
X_Rcvbuf 87380
CurRetxQueue 0
MaxRetxQueue 0
CurAppWQueue 373584
MaxAppWQueue 454672
CurRwinSent 5888
MaxRwinSent 5888
MinRwinSent 5840
LimRwin 0
DupAcksOut 0
CurReasmQueue 0
MaxReasmQueue 0
CurAppRQueue 0
MaxAppRQueue 0
X_rcv_ssthresh 5840
X_wnd_clamp 64087
X_dbg1 5888
X_dbg2 536
X_dbg3 5840
X_dbg4 0
CurRwinRcvd 3137536
MaxRwinRcvd 3137536
MinRwinRcvd 17896
LocalAddressType 1
LocalAddress 198.2.1.2
LocalPort 43578
RemAddress 131.225.2.16
RemPort 5001
X_RcvRTT 0
[root@gw004 ipv4]#
next prev parent reply other threads:[~2008-04-15 16:44 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-04 4:54 A Linux TCP SACK Question Wenji Wu
2008-04-04 16:27 ` John Heffner
2008-04-04 17:49 ` Wenji Wu
2008-04-04 18:07 ` John Heffner
2008-04-04 20:00 ` Ilpo Järvinen
2008-04-04 20:07 ` Wenji Wu
2008-04-04 21:15 ` Wenji Wu
2008-04-04 21:33 ` Ilpo Järvinen
2008-04-04 21:39 ` Ilpo Järvinen
2008-04-04 22:14 ` Wenji Wu
2008-04-05 17:42 ` Ilpo Järvinen
2008-04-05 21:17 ` Sangtae Ha
2008-04-06 20:27 ` Wenji Wu
2008-04-06 22:43 ` Sangtae Ha
2008-04-07 14:56 ` Wenji Wu
2008-04-08 6:36 ` Ilpo Järvinen
2008-04-08 12:33 ` Wenji Wu
2008-04-08 13:45 ` Ilpo Järvinen
2008-04-08 14:30 ` Wenji Wu
2008-04-08 14:59 ` Ilpo Järvinen
2008-04-08 15:27 ` Wenji Wu
2008-04-08 17:26 ` Ilpo Järvinen
2008-04-14 22:47 ` Wenji Wu
2008-04-15 0:48 ` John Heffner
2008-04-15 8:25 ` Ilpo Järvinen
2008-04-15 18:01 ` Wenji Wu
2008-04-15 22:40 ` John Heffner
2008-04-16 8:27 ` David Miller
2008-04-16 9:21 ` Ilpo Järvinen
2008-04-16 9:35 ` David Miller
2008-04-16 14:50 ` Wenji Wu
2008-04-18 6:52 ` David Miller
2008-08-27 14:38 ` about Linux adaptivly adjusting ssthresh Wenji Wu
2008-08-27 22:48 ` John Heffner
2008-08-28 0:53 ` Wenji Wu
2008-08-28 6:34 ` Ilpo Järvinen
2008-08-28 14:20 ` about Linux adaptivly adjusting dupthresh Wenji Wu
2008-08-28 18:53 ` Ilpo Järvinen
2008-08-28 19:30 ` Wenji Wu
2008-04-16 14:40 ` A Linux TCP SACK Question John Heffner
2008-04-16 15:03 ` Ilpo Järvinen
2008-04-16 14:46 ` Wenji Wu
2008-04-15 15:45 ` Wenji Wu
2008-04-15 16:39 ` Wenji Wu [this message]
2008-04-15 17:01 ` John Heffner
2008-04-15 17:08 ` Ilpo Järvinen
2008-04-15 17:23 ` John Heffner
2008-04-15 18:00 ` Matt Mathis
2008-04-15 17:55 ` Wenji Wu
2008-04-08 15:57 ` John Heffner
2008-04-08 14:07 ` John Heffner
2008-04-14 16:10 ` Wenji Wu
2008-04-14 16:48 ` Ilpo Järvinen
2008-04-14 22:07 ` Wenji Wu
2008-04-15 8:23 ` Ilpo Järvinen
2008-04-04 21:40 ` Wenji Wu
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