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Initial Performance Measurements With DataTAG PCs Gigabit Ethernet NICs (Work in progress Oct 02)

Initial Performance Measurements With DataTAG PCs Gigabit Ethernet NICs (Work in progress Oct 02). UDP Latency: Intel onboard b2b. Motherboard: SuperMicro P4DP8 Chipset: CPU: P4 2.2 GHz PCI:64 bit 66 MHz RedHat 7.3 Kernel 2.4.19. Latency high Interrupt coalesance Latency NOT well behaved

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Initial Performance Measurements With DataTAG PCs Gigabit Ethernet NICs (Work in progress Oct 02)

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  1. Initial Performance MeasurementsWith DataTAG PCsGigabit Ethernet NICs(Work in progress Oct 02) DataTAG CERN Oct 2002 R. Hughes-Jones Manchester

  2. UDP Latency: Intel onboard b2b • Motherboard: SuperMicro P4DP8 Chipset: • CPU: P4 2.2 GHz PCI:64 bit 66 MHz • RedHat 7.3 Kernel 2.4.19 • Latency high • Interrupt coalesance • Latency NOT well behaved • Slope • Expect: PCI 0.00188 GigE 0.008 PCI 0.00188 0.0118 us/byte DataTAG CERN Oct 2002 R. Hughes-Jones Manchester

  3. UDP Latency: Intel onboard b2b • Motherboard: SuperMicro P4DP8 Chipset: • CPU: P4 2.2 GHz PCI:64 bit 66 MHz • RedHat 7.3 Kernel 2.4.19 • Max throughput 980Mbit/s • No packet loss • 30% CPU utilisation DataTAG CERN Oct 2002 R. Hughes-Jones Manchester

  4. UDP Latency: SysKonnect b2b • Motherboard: SuperMicro P4DP8 Chipset: • CPU: P4 2.2 GHz PCI:64 bit 66 MHz • RedHat 7.3 Kernel 2.4.19 • Latency low • Interrupt every packet • Latency well behaved • Slope 0.022 us/byte • Expect: PCI 0.00188 GigE 0.008 PCI 0.00188 0.0118 us/byte DataTAG CERN Oct 2002 R. Hughes-Jones Manchester

  5. UDP Throughput: SysKonnect b2b • Motherboard: SuperMicro P4DP8 Chipset: • CPU: P4 2.2 GHz PCI:64 bit 66 MHz • RedHat 7.3 Kernel 2.4.19 • Max throughput 980Mbit/s • No packet loss • 30% utilisation Sender after wire speed DataTAG CERN Oct 2002 R. Hughes-Jones Manchester

  6. UDP Latency: SysKonnect b2b with switch • Motherboard: SuperMicro P4DP8 Chipset: • CPU: P4 2.2 GHz PCI:64 bit 66 MHz • RedHat 7.3 Kernel 2.4.19 • Latency low • Interrupt every packet • Latency well behaved • Slope 0.028 us/byte • Expect: PCI 0.00188 GigE 0.008 PCI 0.00188 0.0118 us/byte DataTAG CERN Oct 2002 R. Hughes-Jones Manchester

  7. UDP Throughput: SysKonnect b2b with switch • Motherboard: SuperMicro P4DP8 Chipset: • CPU: P4 2.2 GHz PCI:64 bit 66 MHz • RedHat 7.3 Kernel 2.4.19 • Max throughput 980Mbit/s • No packet loss • 30% utilisation Sender • ~30 % utilisation Receiver DataTAG CERN Oct 2002 R. Hughes-Jones Manchester

  8. UDP Throughput: SysKonnect Chicago - CERN • Motherboard: SuperMicro P4DP8 Chipset: • CPU: P4 2.2 GHz PCI:64 bit 66 MHz • RedHat 7.3 Kernel 2.4.19 • Max throughput 980Mbit/s • No packet loss • Packet loss when sending > wire rate DataTAG CERN Oct 2002 R. Hughes-Jones Manchester

  9. UDP Throughput: SysKonnect Chicago - CERN • Motherboard: SuperMicro P4DP8 Chipset: • CPU: P4 2.2 GHz PCI:64 bit 66 MHz • RedHat 7.3 Kernel 2.4.19 • Max throughput 980Mbit/s • No packet loss • 30% utilisation Sender • ~30 % utilisation Receiver DataTAG CERN Oct 2002 R. Hughes-Jones Manchester

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