Performance comparisons » History » Revision 15
Revision 14 (Greg Burri, 04/19/2012 03:35 PM) → Revision 15/25 (Greg Burri, 06/03/2012 03:57 AM)
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_ |
h2. D-LAN vs DC++ - Downloading a lot of tiny files
We measure the time to transfert a directory containing a lot of tiny files. The size of the directory is 2.74 GiB and contains 3918 directories and 4684 files. Actually this is the directory of the game "League Of Legends":http://euw.leagueoflegends.com/.
h3. Setup
* We used two computers on a gigabit LAN.
* There is a local DC++ hub: ADCH++ 2.8.1.
* We didn't do any other operations during a transfer.
* We did only one transfer at the same time. We cleared queued and the directory before each measurement (the files are deleted from the trash).
* OS: Windows 7 64bits
* Download computer CPU: Intel Core i7 860, 6 GiB of RAM
* Upload computer CPU: Intel Core 2 Duo E8400, 4 GiB of RAM
* DC++ version: 0.799
* D-LAN version: 1.1.0 Beta8
h3. Download time
| |_. Time |_. Factor |
|_. DC++ | 1min 20s | 1 |
|_. D-LAN | 14min 13s | 10.7 |