On Linux performance of CPU-bound processes in the presence of network I/O
| dc.contributor.author | Abdulrahman Mohammad Al-Mana | |
| dc.date | 2009 | |
| dc.date.accessioned | 2022-05-18T06:05:30Z | |
| dc.date.available | 2022-05-18T06:05:30Z | |
| dc.degree.department | College of Computer Science and Engineering | |
| dc.degree.grantor | King Fahad for Petrolem University | |
| dc.description.abstract | ﺍﻟﺪﺭﺍﺳﺔ ﺍﳌﻘﺪﻣﺔ ﰲ ﻫﺬﺍ ﺍﻟﺒﺤﺚ ﺗﺴﻠﻂ ﺍﻟﻀﻮﺀ ﻋﻠﻰ ﺇﻣﻜﺎﻧﻴﺔ ﺣﺪﻭﺙ ﺗﺮﺍﺟﻊ ﺷﺪﻳﺪ ﰲ ﺃﺩﺍﺀ ﺍﻟﻌﻤﻠﻴﺎﺕ ﺍﳌﺮﺗﺒﻄﺔ ﺑﻮﺣﺪﺓ ﺍﳌﻌﺎﳉﺔ ﺍﳌﺮﻛﺰﻳﺔ ﻟﻠﺤﺎﺳﺐ ﰲ ﻧﻈﺎﻡ ﺗﺸﻐﻴﻞ ﻟﻴﻨﻮﻛﺲ، ﰲ ﻇﻞ ﺗﻮﺍﺟﺪ ﻋﻤﻠﻴﺎﺕ ﻣﺮﺗﺒﻄﺔ ﲟﻌﺎﳉﺔ ﺑﻴﺎﻧﺎﺕ ﺍﻟﺸﺒﻜﺔ .ﺍﳌﺪﻫﺶ ﺃﻥ ﺍﻟﺘﺮﺍﺟﻊ ﺍﻟﺸﺪﻳﺪ ﰲ ﺃﺩﺍﺀ ﺍﻟﻌﻤﻠﻴﺎﺕ ﺍﳌﺮﺗﺒﻄﺔ ﺑﻮﺣﺪﺓ ﺍﳌﻌﺎﳉﺔ ﺍﳌﺮﻛﺰﻳﺔ ﻻ ﳛﺪﺙ ﺇﻻ ﰲ ﳎﺎﻝ ﳏﺪﺩ ﻣﻦ ﺣﺮﻛﺔ ﺳﲑ ﺑﻴﺎﻧﺎﺕ ﺍﻟﺸﺒﻜﺔ، ﺑﻴﻨﻤﺎ ﻻ ﻳﻼﺣﻆ ﻫﺬﺍ ﺍﻟﺘﺮﺍﺟﻊ ﺧﺎﺭﺝ ﻫﺬﺍ ﺍ ﻟﻨﻄﺎﻕ ﻣﻦ ﺣﺮﻛﺔ ﺳﲑ ﺑﻴﺎﻧﺎﺕ ﺍﻟﺸﺒﻜﺔ .ﻗﻤﻨﺎ ﰲ ﻫﺬﺍ ﺍﻟﺒﺤﺚ ﺑﺈﺛﺒﺎﺕ ﻭﺟﻮﺩ ﻫﺬﻩ ﺍﻟﻈﺎﻫﺮﺓ ﻋﻤﻠﻴﺎ ﰲ ﻇﻞ ﻭﺟﻮﺩ ﺗﻄﺒﻴﻘﺎﺕ ﺷﺒﻜﻴﺔ ﳐﺘﻠﻔﺔ، ﻭ ﺑﺎﺳﺘﺨﺪﺍﻡ ﺃﺷﻜﺎﻝ ﻣﺘﻌﺪﺩﺓ ﻣﻦ ﺇﻋﺪﺍﺩﺍﺕ ﻧﻈﺎﻡ ﺍﻟﺘﺸﻐﻴﻞ ﻭ ﺍﻟﺸﺒﻜﺔ .ﺑﺎﻹﺿﺎﻓﺔ ﳌﺎ ﺳﺒﻖ،ﻟﻘﺪ ﰎ ﺇﺛﺒﺎﺕ ﻭﺟﻮﺩ ﻫﺬﻩ ﺍﻟﻈﺎﻫﺮﺓ ﰲ ﺇﺻﺪﺍﺭﻳﻦ ﳐﺘﻠﻔﲔ ﻣﻦ ﻧﻈﺎﻡ ﺍﳉﺪﻭﻟﺔ ﰲ ﻭﻧﻈﺎﻡ ﺍﳉﺪﻭﻟﺔ ﺍﻷﺣﺪﺙ، ﺍﳌﻌﺮﻭﻑ ﺑـﻨﻈﺎﻡ ﺍﳉﺪﻭﻟﺔ ﺫﻱ O(1) 2.6 ﻟﻴﻨﻮﻛﺲ، ﻭ ﳘﺎ :ﻧﻈﺎﻡ ﺍﳉﺪﻭﻟﺔ ﺍﳌﻌﺮﻭﻑ ﺑـ .ﻗﻤﻨﺎ ﺑﺘﻌﺪﻳﻞ ﺑﺮﳎﺔ ﻧﻈﺎﻡ ﻟﻴﻨﻮﻛﺲ ﻟﻠﻮﻗﻮﻑ ﺃﻛﺜﺮ ﻋﻠﻰ ﺍﳌﺸﻜﻠﺔ ﻭ ﲢﻠﻴﻞ ﺍﻟﺴﺒﺐ ﺍﻟﺮﺋﻴﺴﻲ ﻭﺭﺍﺀ (CFS) ﺍﻟﻌﺪﺍﻟﺔ ﺍﻟﻜﺎﻣﻠﺔ ﻫﺬﻩ ﺍﻟﻈﺎﻫﺮﺓ ﺍﻟﻐﺮﻳﺒﺔ .ﻟﻌﻼﺝ ﻫﺬﻩ ﺍﻟﻈﺎﻫﺮﺓ، ﰎ ﺍﻗﺘﺮﺍﺡ ﻭﺗﻄﺒﻴﻖ ﺣﻞ ﳑﻜﻦ ﻟﻜﻞ ﻣﻦ ﺍﻟﻨﺴﺨﺘﲔ ﻣﻦ ﻧﻈﺎﻡ ﺟﺪﻭﻟﺔ ﻟﻴﻨﻮﻛﺲ . ﻭﺿﺤﻨﺎ ﻋﻤﻠﻴﺎ ﻛﻴﻒ ﺃﻥ ﺍﳊﻞ ﺍﳌﻘﺘﺮﺡ ﻓﻌﺎﻝ ﺟﺪﺍ ﰲ ﲢﺴﲔ ﺃﺩﺍﺀ ﺍﻟﻌﻤﻠﻴﺎﺕ ﺍﳌﺮﺗﺒﻄﺔ ﺑﻮﺣﺪﺓ ﺍﳌﻌﺎﳉﺔ ﺍﳌﺮﻛﺰﻳﺔ ﻟﻠﺤﺎﺳﺐ ﰲ ﺑﻴﺌﺔ ﻧﻈﺎﻡ ﺗﺸﻐﻴﻞ ﻟﻴﻨﻮﻛﺲ ﺃﺣﺎﺩﻳﺔ ﻭ ﻣﺘﻌﺪﺩﺓ ﺍﳌﻌﺎﳉﺔ .ﻧﺘﺎﺋﺞ ﺍﻟﺘﺠﺎﺭﺏ ﺗﺜﺒﺖ ﺃﻳﻀﺎ ﻋﺪﻡ ﻭﺟﻮﺩ ﺃﻱ ﺗﺄﺛﲑ ﺳﻠﱯ ﻟﻠﺤﻞ ﺍﳌﻘﺘﺮﺡ ﻋﻠﻰ ﺃﺩﺍﺀ ﻋﻤﻠﻴﺎﺕ ﺍﻟﺸﺒﻜﺔ. | |
| dc.identifier.other | 6146 | |
| dc.identifier.uri | https://drepo.sdl.edu.sa/handle/20.500.14154/2164 | |
| dc.language.iso | en | |
| dc.publisher | Saudi Digital Library | |
| dc.thesis.level | Master | |
| dc.thesis.source | King Fahad for Petrolem University | |
| dc.title | On Linux performance of CPU-bound processes in the presence of network I/O | |
| dc.type | Thesis |