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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] (current) cooldavid |
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| ^ 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 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. | ||
