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DataTAG CERN Oct 2002 R. Hughes-Jones Manchester Initial Performance Measurements With DataTAG PCs Gigabit Ethernet NICs (Work in progress Oct 02)

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Presentation on theme: "DataTAG CERN Oct 2002 R. Hughes-Jones Manchester Initial Performance Measurements With DataTAG PCs Gigabit Ethernet NICs (Work in progress Oct 02)"— Presentation transcript:

1 DataTAG CERN Oct 2002 R. Hughes-Jones Manchester Initial Performance Measurements With DataTAG PCs Gigabit Ethernet NICs (Work in progress Oct 02)

2 DataTAG CERN Oct 2002 R. Hughes-Jones Manchester UDP Latency: Intel onboard b2b Motherboard: SuperMicro P4DP8 Chipset: CPU: P4 2.2 GHz PCI:64 bit 66 MHz RedHat 7.3 Kernel Latency high Interrupt coalesance Latency NOT well behaved Slope Expect: PCI GigE0.008 PCI us/byte

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

4 DataTAG CERN Oct 2002 R. Hughes-Jones Manchester UDP Latency: SysKonnect b2b Motherboard: SuperMicro P4DP8 Chipset: CPU: P4 2.2 GHz PCI:64 bit 66 MHz RedHat 7.3 Kernel Latency low Interrupt every packet Latency well behaved Slope us/byte Expect: PCI GigE0.008 PCI us/byte

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

6 DataTAG CERN Oct 2002 R. Hughes-Jones Manchester UDP Latency: SysKonnect b2b with switch Motherboard: SuperMicro P4DP8 Chipset: CPU: P4 2.2 GHz PCI:64 bit 66 MHz RedHat 7.3 Kernel Latency low Interrupt every packet Latency well behaved Slope us/byte Expect: PCI GigE0.008 PCI us/byte

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

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

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


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