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Network and TCP performance relationship workshop

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Kae Hsu
Kae Hsu

Slide in TWNIC 14th OPM TWNOG Workshop. Date: July 2, 2010.

Technologie
1  sur  33
TWNOG WORKSHOP 2010/7/2, Taipei 網路維運常見問題原因、偵錯 (Troubleshooting) 技術解析 網路與 TCP 效能關聯探討 智匯亞洲有限公司 許至凱 CCIE/JNCIE kaeatforum [at] gmail.com
Objects ,[object Object],[object Object],[object Object],[object Object],[object Object]
Agenda ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
TCP Briefing ,[object Object],[object Object],Application Socket Layer (net/socket.c) Inet Layer (net/ipv4/af_inte.c) IP Layer (various ip files in net/ipv4) TCP Layer (net/ipv4/tcp.c) UDP Layer (net/ipv4/udp.c) Ethernet Device Driver Ethernet Card Other Drivers Parallel/Serial/Other Interface Drivers
TCP Briefing ,[object Object],[object Object],TCP/IP Stack (Tcpip.sys) Windows Sockets Applications Windows Sockets AFD WSK Clients WSK NetBT and other TDI clients TDI TDX TCP UDP RAW IPv6 IPv4 802.3 PPP 802.11 Loopback IPv4 Tunnel NDIS User Kernel
TCP Briefing ,[object Object]
TCP Briefing ,[object Object]
TCP Briefing ,[object Object]
TCP Performance Factors ,[object Object],[object Object],[object Object],[object Object]
TCP Performance Factors ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
TCP Performance Factors ,[object Object],[object Object],Step 1 Step 2 Step 3 Step 4 Time 已收到 ACK 等待 ACK 中 可傳送區間 不可傳送區間 12 13 11 10 9 8 7 6 5 4 3 2 1 0 12 13 11 10 9 8 7 6 5 4 3 2 1 0 12 13 11 10 9 8 7 6 5 4 3 2 1 0 12 13 11 10 9 8 7 6 5 4 3 2 1 0
TCP Performance Factors ,[object Object],[object Object],[object Object]
TCP Performance Factors ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
TCP Performance Factors ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
TCP Performance Factors ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
TCP Performance Factors ,[object Object]
TCP Performance Factors ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Network Event Impact ,[object Object],[object Object],[object Object]
Network Event Impact ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Improvement – Network approach ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Improvement – Network approach ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Improvement – Network approach ,[object Object],[object Object],[object Object],[object Object]
Improvement – Network approach ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Improvement – Appliance approach ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Improvement – Appliance approach ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Improvement – Appliance approach ,[object Object],[object Object]
Improvement – Appliance approach ,[object Object],[object Object],[object Object]
Improvement – Appliance approach ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Improvement – Appliance approach ,[object Object],[object Object],Client Server SYN ACK SYN+ACK GET FIN ACK ACK Data Data Data FIN
Improvement – Appliance approach ,[object Object],[object Object],[object Object],Client Server TCP Proxy SYN ACK SYN+ACK GET FIN ACK ACK Data Data Data GET Data Data Data FIN
Improvement – Appliance approach ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Reference ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Q & A

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Network and TCP performance relationship workshop

  • 1. TWNOG WORKSHOP 2010/7/2, Taipei 網路維運常見問題原因、偵錯 (Troubleshooting) 技術解析 網路與 TCP 效能關聯探討 智匯亞洲有限公司 許至凱 CCIE/JNCIE kaeatforum [at] gmail.com
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  • 33. Q & A