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soc:2010:cooldavid:journal:week12 [2010/08/12 23:04]
cooldavid
soc:2010:cooldavid:journal:week12 [2010/08/13 01:31]
cooldavid
Line 133: Line 133:
 ^ Window Size ^   ​tcpfix2 branch ​    ​^^ ​   wscale2 branch ​   ^^    sackws2 branch ​   ^^ ^ Window Size ^   ​tcpfix2 branch ​    ​^^ ​   wscale2 branch ​   ^^    sackws2 branch ​   ^^
 ^             ^ KVM TAP/NAT ^  Native ^ KVM TAP/NAT ^   ​Native ​  ^ KVM TAP/NAT ^  Native ^ ^             ^ KVM TAP/NAT ^  Native ^ KVM TAP/NAT ^   ​Native ​  ^ KVM TAP/NAT ^  Native ^
-|           ​8K| ​      17KB/s|   ​16KB/​s| ​            ​|      16KB/​s| ​            ​|     ​KB/​s| +|           ​8K| ​      16KB/s|   ​16KB/​s| ​      16KB/s|      16KB/​s| ​        KB/s|     ​KB/​s| 
-|          16K|       43KB/s|   43KB/s|             ​|      41KB/​s| ​            ​|     ​KB/​s| +|          16K|       41KB/s|   41KB/s|       41KB/s|      41KB/​s| ​        KB/s|     ​KB/​s| 
-|          32K|       94KB/s|   93KB/s|             ​|      91KB/​s| ​            ​|     ​KB/​s| +|          32K|       90KB/s|   90KB/s|       90KB/s|      91KB/​s| ​        KB/s|     ​KB/​s| 
-|          64K|      ​198KB/​s|  ​192KB/s|             ​|     ​187KB/​s| ​            ​|     ​KB/​s| +|          64K|      ​186KB/​s|  ​186KB/s|      ​187KB/​s|     ​187KB/​s| ​        KB/s|     ​KB/​s| 
-|         ​128K| ​            ​| ​        ​| ​            ​|     ​374KB/​s| ​            ​|     ​KB/​s| +|         ​128K| ​            ​| ​        ​| ​     ​374KB/​s|     ​374KB/​s| ​        KB/s|     ​KB/​s| 
-|         ​256K| ​            ​| ​        ​| ​            ​|     ​742KB/​s| ​            ​|     ​KB/​s| +|         ​256K| ​            ​| ​        ​| ​     ​470KB/​s|     ​742KB/​s| ​        KB/s|     ​KB/​s| 
-|         ​512K| ​            ​| ​        ​| ​            ​|  [1]344KB/​s| ​            ​|     ​KB/​s| +|         ​512K| ​            ​| ​        ​| ​     ​450KB/​s|  [1]344KB/​s| ​        KB/s|     ​KB/​s| 
-|        1024K| ​            ​| ​        ​| ​            ​|  [1]403KB/​s| ​            ​|     KB/s|+|        1024K| ​            ​| ​        ​| ​     ​498KB/​s|  [1]403KB/​s| ​        KB/s|     KB/s|
  
-[1]: While TCP rx window is large enough to hit the bandwidth limit, packets start to drop. +[1]: While TCP rx window is large enough to hit the bandwidth limit(1MB/s), 
-According to captured data, the retransmittion is very slow.+packets start to drop. According to captured data, the retransmittion is very slow.
 The sending host wait a long time for transmit next missing packet required by client. The sending host wait a long time for transmit next missing packet required by client.
 This issue should be able to fixed with Selective ACK support. This issue should be able to fixed with Selective ACK support.
  
  

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