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ÇѱÛÁ¦¸ñ(Korean Title) |
¼±¹ÝÀÔ°ú ij½³ ±â¹ýÀ» ÀÌ¿ëÇÑ ÀÌÁÖ ÇÁ·Î¼¼½ºÀÇ È¿À²ÀûÀÎ ¼öÇà |
¿µ¹®Á¦¸ñ(English Title) |
Efficient Execution of Migrated Processes using Prefetching and Caching |
ÀúÀÚ(Author) |
Á¶¼ºÁ¦
Á¶À¯±Ù
Seongje Cho
Yookun Cho
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¿ø¹®¼ö·Ïó(Citation) |
VOL 23 NO. 08 PP. 0813 ~ 0822 (1996. 08) |
Çѱ۳»¿ë (Korean Abstract) |
º» ³í¹®¿¡¼´Â È¿À²ÀûÀÎ ºÎÇÏ ±Õµîȸ¦ À§ÇÏ¿© ÆäÀÌÁö ¼±¹ÝÀÔ(page prefetch) ±â¹ý ÅؽºÆ® ¼¼±×¸ÕÆ® ij½³(text segment caching) ±â¹ýÀ» ÀÌ¿ëÇÏ´Â »õ·Î¿î ºñ¼±Á¡Çü ÇÁ·Î¼¼½º Àü¼Û(nonpreemptive process transfer) Á¤Ã¥À» Á¦¾ÈÇÑ´Ù. ÆäÀÌÁö ¼±¹ÝÀÔ ±â¹ýÀ̶õ ÀÌÁÖ ÇÁ·Î¼¼½º¿¡ ÀÇÇØ ÂüÁ¶µÉ ´ÙÀ½ ÆäÀÌÁö¸¦ ±Ù¿øÁö ³ëµåÀÇ µð½ºÅ©·ÎºÎÅÍ ¿ø°Ý ³ëµåÀÇ ¸Þ¸ð¸®·Î ¹Ì¸® ¹ÝÀÔ½ÃÄÑ µð½ºÅ© Á¢±Ù Áö¿¬ ½Ã°£°ú ³×Æ®¿öÅ© Àü¼Û Áö¿¬ ½Ã°£À» ´ÜÃà½ÃÅ°´Â ¹æ¹ýÀÌ´Ù. ÆäÀÌÁö ¼±¹ÝÀÔÀº ¼¹ö ÇÁ·Î¼¼½º¿¡ ÀÇÇØ ¼öÇàµÇ¸ç ÀÌÁÖ ÇÁ·Î¼¼½ºÀÇ Àü¼Û Áö¿¬ ½Ã°¡´Ã ´ÜÃà½ÃÄÑ ÁØ´Ù. ÀÌ ±â¹ýÀº ÇÁ·Î±×·¥ÀÇ ÆäÀÌÁö ÀÌÁÖ ¼ø¼¸¦ ¹Ý¿µÇÏ´Â ÆäÀÌÁö ºÎÀç ±ËÀû¿¡ ±â¹ÝÇÏ¿© ¼öÇàµÇ´Âµ¥, À̸¦ À§ÇØ º» ½Ã½ºÅÛÀº ÇØ´ç ÇÁ·Î±×·¥ÀÇ ÀÌÀü ½ÇÇà ½Ã¿¡ ¹ß»ýµÈ ÆäÀÌÁö ºÎÀç ±ËÀûÀ» ¼öÁýÇÏ¿© ÀÌ¿ëÇÑ´Ù. ÅؽºÆ® ¼¼±×¸ÕÆ® ij½³ ±â¹ýÀº ¸ñÀûÁö ³ëµå·Î ÀÌÁÖµÇ¾î ½ÇÇàÀÌ Á¾°áµÈ ÇÁ·Î¼¼½º¿¡ ´ëÇÏ¿© ÀÏÁ¤ ±â°£µ¿¾È ÅؽºÆ® ¼¼±×¸ÕÆ®¸¦ ¸ñÀûÁö ³ëµåÀÇ ¸Þ¸ð¸®¿¡ À¯ÁöÇÔÀ¸·Î½á ÇÁ·Î¼¼½º ÀÌÁֽà ÅؽºÆ® ¼¼±×¸ÕÆ®¸¦ Àü¼ÛÇÒ ÇÊ¿ä°¡ ¾øµµ·Ï ÇÏ¿© ÁØ´Ù. ÅؽºÆ® ij½³ ±â¹ý ÇÏ¿¡¼ ¿ø°Ý ³ëµå·Î ÀÌÁÖµÉ ÇÁ·Î¼¼½º·Î µ¿ÀÏÇÑ ÇÁ·Î¼¼½º°¡ ¶Ç´Ù½Ã ¼±ÅÃµÉ °æ¿ì, ±× ÇÁ·Î¼¼½º°¡ ÀÌÀü¿¡ ÀÌÁÖµÈ ÀûÀÌ ÀÖ´Â ³ëµå·Î ÀÌÁÖ½ÃÄÑ ½ÇÇà½ÃÅ´À¸·Î½á ÅؽºÆ® ¼¼±×¸ÕÆ® Àü¼ÛÇÒ ÇÊ¿ä¾øÀÌ °í¼Ó ¼öÇàÇÒ ¼ö ÀÖ´Ù. Á¦½ÃµÈ µÎ ±â¹ýÀ» Àû¿ëÇÏ¿© ½ÇÇèÇÑ °á°ú ÀÌÁÖ ÇÁ·Î¼¼½ºÀÇ ÀÀ´ä ½Ã°£°ú ¼ö¸é ½Ã°£ÀÌ ¸¹ÀÌ ´ÜÃàµÇ¾ú´Ù.
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¿µ¹®³»¿ë (English Abstract) |
In distributed computing environment, load balancing has been one of main issues. For efficient load balancing, we propose a new nonpreemptive process transfer policy based on page prefetch and text segment caching schemes. Page prefetch scheme tries to reduce disk access and network transfer latencies by transferring beforehand the predicted pages which a migrated process will reference shortly to memory of a remote node from disk of a source node. Prefetch is performed by server process and reduces process transfer latency. The prefetch is implemented using page fault traces that are obtained at a previous execution of program and reflect the sequence of page migration. Text segment caching scheme tries to eliminate text segment transfer of a migrated process by caching the text segment in the destination node for a period of time after the process has terminated. If the process needs to be migrated again under our text caching scheme, it can be executed rapidly on the node where it has previously been migrated without transferring its text segment. Experimental results show hat our schemes induce little overhead and are effective in reducing the response time of migrated processes. |
Å°¿öµå(Keyword) |
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