D-LAN

h1. Performance comparisons

h2. D-LAN vs ApexDC++

We measured the transfer time and the number of CPU cycles for *one* transfer at a time of a *3.2 GiB file*. This is a particular case, the performance of both systems may varies in a concurrent downloading and uploading case.

h3. Setup

* We used two computers on a gigabit LAN.

* There is a local DC++ hub: ADCH++ 2.8.0.

* We didn't do any other operations during a transfer.

* We download/upload only one file at the same time. We cleared queued and file before each measurement (the file is deleted from the trash).

* OS: Windows 7 64bits

* Download computer CPU: Intel Core 2 Duo E8400, 4 GiB of RAM

* Upload computer CPU: Intel Core i7 860, 6 GiB of RAM

* Apex version: v1.5.2.1276 (64bits)

* D-LAN version: 1.1.0 Beta6

* Software used to count cycles: "Process Hacker 2":http://processhacker.sourceforge.net/

h3. Download speed

We repeated the transfer three times.

|  |_. # 1 |_. # 2 |_. # 3 |_. Average |_. Average download speed |

|_. ApexDC++ | 160 s | 167 s | 163 s | 163.3 s | _20.1 MiB/s_ |

|_. D-LAN | 78 s | 87 s | 86 s | 83.7 s | _39.2 MiB/s_ |

h3. CPU Cycles

These values are measured in one download/upload of a 3.2 GiB file.

| [Million of cycles] |_. Download |_. Upload |_. Total |

|_. ApexDC++ | 199'613 | 272'655 | _472'268_ |

|_. D-LAN (Core + GUI) |  103'914 (88'800 + 15'114) | 24'086 (20'969 + 3'117) | _128'000_ |