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soc:2010:cooldavid:journal:week12 [2010/08/12 22:08]
cooldavid
soc:2010:cooldavid:journal:week12 [2010/08/13 00:38]
cooldavid
Line 131: Line 131:
   * Tested it with emulated rtl8139 of KVM, and Native on rtl8139 hardware.   * Tested it with emulated rtl8139 of KVM, and Native on rtl8139 hardware.
  
-^ Window Size ^   ​tcpfix2 branch ​   ^^    wscale2 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 ^ 
-|           ​8K| ​      17KB/s|   ​16KB/​s| ​            ​  ​16KB/s| +|           ​8K| ​      16KB/s|   ​16KB/​s| ​      16KB/s     16KB/s|         ​KB/​s| ​    KB/s| 
-|          16K|       ​43KB/​s| ​  ​43KB/​s| ​            ​  ​41KB/s| +|          16K|       ​43KB/​s| ​  ​43KB/​s| ​      41KB/s     41KB/s|         ​KB/​s| ​    KB/s| 
-|          32K|       ​94KB/​s| ​  ​93KB/​s| ​            ​  ​91KB/s| +|          32K|       ​94KB/​s| ​  ​93KB/​s| ​      90KB/s     91KB/s|         ​KB/​s| ​    KB/s| 
-|          64K|      198KB/​s| ​ 192KB/​s| ​            ​ 187KB/s| +|          64K|      198KB/​s| ​ 192KB/​s| ​     ​187KB/​s    ​187KB/s|         ​KB/​s| ​    KB/s| 
-|         ​128K| ​            ​| ​        ​| ​            ​ 374KB/s| +|         ​128K| ​            ​| ​        ​| ​     ​374KB/​s    ​374KB/s|         ​KB/​s| ​    KB/s| 
-|         ​256K| ​            ​| ​        ​| ​            ​ 742KB/s| +|         ​256K| ​            ​| ​        ​| ​     ​470KB/​s    ​742KB/s|         ​KB/​s| ​    KB/s| 
-|         ​512K| ​            ​| ​        ​| ​            ​|     ​KB/​s| +|         ​512K| ​            ​| ​        ​| ​     ​450KB/​s| ​ [1]344KB/​s| ​        KB/s|     ​KB/​s| 
-|        1024K| ​            ​| ​        ​| ​            ​|     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(1MB/​s),​ 
 +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. 
 +This issue should be able to fixed with Selective ACK support.
  
  

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