From: Michael Iatrou <m.iatrou@freemail.gr>
To: netdev@oss.sgi.com
Subject: e1000 (?) jumbo frames performance issue
Date: Thu, 5 May 2005 19:28:32 +0300 [thread overview]
Message-ID: <200505051928.32496.m.iatrou@freemail.gr> (raw)
[-- Attachment #1: Type: text/plain, Size: 500 bytes --]
Hi,
I did several benchmarks using Intel e1000 NIC and it seems there is a
network throughput problem for MTU > 12000 (e1000 supports up to 16110
MTU).
Configuration:
Two identical PCs, connected back to back, Intel Xeon 2.8GHz (SMP/SMT
disabled), 512MB RAM, e1000 (82546EB)
Linux 2.6.11.7
netperf 2.3pl1
http://members.hellug.gr/iatrou/plain_ip_mtu.png
http://members.hellug.gr/iatrou/plain_ip_mtu.dat
--
Michael Iatrou
Electrical and Computer Engineering Dept.
University of Patras, Greece
[-- Attachment #2: plain_ip_mtu.dat --]
[-- Type: text/plain, Size: 3639 bytes --]
1500 936.14
1550 938.45
1600 927.26
1650 943.06
1700 942.91
1750 943.94
1800 947.95
1850 945.14
1900 952.91
1950 948.15
2000 948.55
2050 949.63
2100 953.98
2150 958.59
2200 959.39
2250 959.48
2300 960.57
2350 960.78
2400 953.26
2450 956.50
2500 964.36
2550 961.98
2600 964.61
2650 963.79
2700 966.36
2750 967.56
2800 968.12
2850 963.65
2900 969.22
2950 968.97
3000 967.69
3050 968.75
3100 970.95
3150 967.95
3200 972.19
3250 972.61
3300 973.01
3350 973.41
3400 973.78
3450 974.15
3500 974.52
3550 974.88
3600 975.23
3650 975.56
3700 975.89
3750 976.20
3800 976.52
3850 976.82
3900 977.11
3950 977.39
4000 977.68
4050 977.95
4100 978.23
4150 978.48
4200 978.74
4250 978.97
4300 979.21
4350 979.46
4400 979.68
4450 979.91
4500 980.13
4550 980.36
4600 980.58
4650 980.77
4700 980.97
4750 981.17
4800 981.37
4850 981.56
4900 981.75
4950 981.92
5000 982.10
5050 982.28
5100 982.47
5150 982.61
5200 982.78
5250 982.96
5300 983.11
5350 983.27
5400 983.43
5450 983.58
5500 983.71
5550 983.87
5600 984.01
5650 984.15
5700 984.27
5750 984.42
5800 984.55
5850 984.67
5900 984.83
5950 984.94
6000 985.06
6050 985.21
6100 985.29
6150 985.43
6200 985.54
6250 985.66
6300 985.79
6350 985.91
6400 986.03
6450 986.13
6500 986.23
6550 986.34
6600 986.44
6650 986.55
6700 986.65
6750 986.75
6800 986.83
6850 986.95
6900 987.04
6950 987.13
7000 987.22
7050 987.31
7100 987.40
7150 987.48
7200 987.57
7250 987.66
7300 987.74
7350 987.81
7400 987.89
7450 987.98
7500 987.74
7550 987.81
7600 987.20
7650 987.58
7700 986.59
7750 985.17
7800 985.46
7850 983.50
7900 983.88
7950 982.86
8000 953.35
8050 952.76
8100 947.34
8150 947.85
8200 942.18
8250 989.13
8300 989.21
8350 989.27
8400 989.33
8450 989.40
8500 989.47
8550 989.52
8600 989.58
8650 989.64
8700 989.71
8750 989.76
8800 989.82
8850 989.88
8900 989.93
8950 989.99
9000 990.04
9050 990.10
9100 990.16
9150 990.21
9200 990.26
9250 990.31
9300 990.37
9350 990.41
9400 990.47
9450 990.51
9500 990.57
9550 990.61
9600 990.66
9650 990.70
9700 990.76
9750 990.81
9800 990.86
9850 990.89
9900 990.94
9950 990.98
10000 991.04
10050 991.08
10100 991.12
10150 991.17
10200 991.21
10250 991.23
10300 991.30
10350 991.34
10400 991.38
10450 991.43
10500 991.46
10550 991.50
10600 991.55
10650 991.58
10700 991.63
10750 991.67
10800 991.70
10850 991.74
10900 991.78
10950 991.81
11000 991.86
11050 991.89
11100 991.92
11150 991.97
11200 992.00
11250 992.03
11300 992.07
11350 992.11
11400 992.13
11450 992.17
11500 992.21
11550 992.23
11600 992.16
11650 992.12
11700 991.89
11750 991.62
11800 991.79
11850 991.50
11900 991.77
11950 990.46
12000 990.52
12050 989.66
12100 968.77
12150 967.79
12200 970.55
12250 955.71
12300 952.36
12350 947.52
12400 945.08
12450 946.48
12500 944.09
12550 945.16
12600 942.07
12650 940.04
12700 938.17
12750 936.29
12800 933.29
12850 930.13
12900 927.75
12950 925.10
13000 924.25
13050 922.31
13100 917.67
13150 915.92
13200 913.99
13250 912.00
13300 908.68
13350 905.72
13400 904.99
13450 903.24
13500 900.91
13550 898.57
13600 897.07
13650 895.17
13700 892.79
13750 890.03
13800 888.41
13850 887.29
13900 886.30
13950 884.43
14000 882.25
14050 880.46
14100 878.22
14150 876.24
14200 875.41
14250 872.58
14300 873.01
14350 870.16
14400 868.45
14450 866.98
14500 864.76
14550 863.05
14600 862.22
14650 860.05
14700 858.71
14750 857.23
14800 856.31
14850 854.37
14900 851.15
14950 849.92
15000 849.54
15050 848.40
15100 847.32
15150 845.17
15200 844.45
15250 842.98
15300 841.14
15350 839.62
15400 838.34
15450 837.14
15500 836.43
15550 834.64
15600 833.64
15650 832.08
15700 830.72
15750 829.29
15800 828.07
15850 826.93
15900 825.75
15950 825.10
16000 823.32
16050 822.36
16100 819.77
next reply other threads:[~2005-05-05 16:28 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-05 16:28 Michael Iatrou [this message]
2005-05-05 20:17 ` e1000 (?) jumbo frames performance issue Rick Jones
2005-05-05 21:33 ` David S. Miller
2005-05-05 21:54 ` Rick Jones
2005-05-05 22:17 ` David S. Miller
2005-05-05 23:24 ` Rick Jones
2005-05-05 21:55 ` Michael Iatrou
2005-05-05 22:26 ` Michael Iatrou
2005-05-06 16:18 ` Rick Jones
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