A6826A - PCI-X Dual port 2Gb/s Fibre Channel Adapter Performance Paper for PCI Platforms

Chart 3b: 128 KB Sequential Write
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200
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600
800
1000
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1400
1600
Number of Ports
Throughput (MB/s)
Superdome
188.35 318.93 494.53 600.46 783.03 906.7 1073.9 1183
rp8400
188.21 327.57 507.1 638.67 794.84 882.5 1048.3 1139.1
r
p
7400
188.6 375.87 557.2 722.77 909.45 1077.6 1255.8 1413.7
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2 Cell Superdome Partition with 8 (850MHz) CPUs
2Cell rp8400 Partition with 8 (750MHz) CPUs
rp7400 with 8 (550 MHz) CPUs
The above chart, chart 3b, shows the write throughput performance of 1, 2, 3 and 4 A6826A in Superdome,
rp8400, rp7400 and rp5450 systems. The X-axis is the number of ports. Each port represents one port of
A6826A. The Y-axis is the throughput performance in MB/s.
The chart shows excellent write throughput performance with linear scaling for 4 A6826As on Superdome and
rp8400 reaching an aggregate of 1180 MB/s. Superdome and rp8400 along with A6826A offer a great
scalable and connectivity solution.
On rp7400 the write throughput scales linearly for 4 A6286As reaching an aggregate of 1413MB/s.
The table below summarizes the maximum number of cards that can be used on these platforms in order achieve
linear scalability. Additional cards can be used to provide better connectivity.
Maximum number of A6826A for linear scalability Ports operating
speed
rp8400 Superdome rp7400 rp5450
Both Ports at 2Gb 4 2 per IO Cage 4 2
One port at 1 Gb and
other at 2Gb
6 3 per IO Cage 6 4
Both ports at 1 Gb 8 4 per IO Cage 8 4
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