TCP Fast Open

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    • Type: Epic
    • Resolution: Won't Do
    • Priority: Major - P3
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    • TCP Fast Open
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      This change enables "TCP Fast Open" (TFO) connections to MongoDB.

      • The operating system of both the client and server must have TFO support
        • Windows: Server only on Windows 10 or later
        • macOS: Server only on 10.11 or later
        • Linux
          • Client: Kernel version >= 4.11, /proc/sys/net/ipv4/tcp_fastopen set to 1 or 3.
          • Server: Kernel version >= 3.7, /proc/sys/net/ipv4/tcp_fastopen set to 2 or 3

      setParameters (these are enabled by default):

      • tcpFastOpenClient - Attempt to make outbound TFO connections
      • tcpFastOpenServer - Accept inbound TFO connection attempts

      Additionally the following setParameter may be tuned on the server:

      • tcpFastOpenQueueSize (default 1024).
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      This change enables "TCP Fast Open" (TFO) connections to MongoDB. The operating system of both the client and server must have TFO support Windows: Server only on Windows 10 or later macOS: Server only on 10.11 or later Linux Client: Kernel version >= 4.11, /proc/sys/net/ipv4/tcp_fastopen set to 1 or 3. Server: Kernel version >= 3.7, /proc/sys/net/ipv4/tcp_fastopen set to 2 or 3 setParameters (these are enabled by default): tcpFastOpenClient - Attempt to make outbound TFO connections tcpFastOpenServer - Accept inbound TFO connection attempts Additionally the following setParameter may be tuned on the server: tcpFastOpenQueueSize (default 1024).
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      Downstream Change Summary

      This change enables "TCP Fast Open" (TFO) connections to MongoDB.

      • The operating system of both the client and server must have TFO support
        • Windows: Server only on Windows 10 or later
        • macOS: Server only on 10.11 or later
        • Linux
          • Client: Kernel version >= 4.11, /proc/sys/net/ipv4/tcp_fastopen set to 1 or 3.
          • Server: Kernel version >= 3.7, /proc/sys/net/ipv4/tcp_fastopen set to 2 or 3

      setParameters (these are enabled by default):

      • tcpFastOpenClient - Attempt to make outbound TFO connections
      • tcpFastOpenServer - Accept inbound TFO connection attempts

      Additionally the following setParameter may be tuned on the server:

      • tcpFastOpenQueueSize (default 1024)

      Description of Linked Ticket

      We should investigate what work needs to be done to perform TCP Fast Open when speaking to other hosts.

              Assignee:
              Unassigned
              Reporter:
              Backlog - Core Eng Program Management Team
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