TaskSet À¸·Î ProcessÀÇ »ç¿ë CPU¸¦ ÁöÁ¤ÇØ º¸ÀÚ! | ÀÛ¼ºÀÏ : 2010/03/04 17:48 |
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¡á Taskset À̶õ? TaskSetÀº ÇÁ·Î¼¼½º°¡ »ç¿ëÇÒ CPU(CPU affinity) ¸¦ º¸¿©Áְųª ÁöÁ¤ÇØÁØ´Ù. ¡á »ç¿ë ¹æ¹ý taskset [options] [mask | list ] [pid | command [arg]...] mask´Â Process°¡ »ç¿ëÇÒ CPU °ªÀ» ³ªÅ¸³»¸ç 16Áø¼ö·Î Ç¥ÇöÀÌ µÈ´Ù. 0x00000001 ´Â 0¹ø ÇÁ·Î¼¼½º(CPU)ÀÇ »ç¿ëÀ» ³ªÅ¸³»¸ç 0x00000003 ´Â 0¹ø°ú 1¹ø ÇÁ·Î¼¼½º(CPU)ÀÇ »ç¿ëÀ» ³ªÅ¸³»¸ç 0xFFFFFFFF ´Â ¸ðµç ÇÁ·Î¼¼½º(CPU)ÀÇ »ç¿ëÀ» ³ªÅ¸³À´Ï´Ù.(0 ~ 31¹ø..) ¹°·Ð, mask¸¦ ÇÁ·Î¼¼¼(CPU)ÀÇ ¼ýÀڷΠǥÇöÇÒ ¼öµµ ÀÖ´Ù. mask¸¦ ÇÁ·Î¼¼¼(CPU)ÀÇ ¼ýÀÚ·Î ³ªÅ¸³»±â À§Çؼ´Â ÁÖ¿ä ¿É¼ÇÀÇ "-c, --cpu-list " ¿É¼ÇÀ» »ç¿ëÇØÁÖ¸é µÈ´Ù. ¡á ÁÖ¿ä ¿É¼Ç -p, --pid operate on an existing PID and not launch a new task -c, --cpu-list specifiy a numerical list of processors instead of a bitmask. The list may contain multiple items, separated by comma, and ranges. For example, 0,5,7,9-11 * À§ÀÇ ¿É¼ÇµéÀº º¸¿©ÁÖ°£, ¼¼ÆÃÇÒ¶§ µ¿ÀÏÇÏ°Ô »ç¿ëµÇ¾î Áø´Ù. ¡á ¸í·É¾îÀÇ ´Ù¾ç ÇÑ ¿¹ 1) ÇØ´ç ÇÁ·Î¼¼½ºÀÇ ÁöÁ¤µÈ CPU º¸±â (CPU affinity) # taskset -p pid ==================== # taskset -p 4444 pid 4444's current affinity mask: 9 <-- -c ¿É¼ÇÀÌ ¾øÀ¸¸é mask´Â 16Áø¼ö·Î ³ª¿Â´Ù. # taskset -pc 4444 pid 4444's current affinity list: 0,3 <-- -c ¿É¼ÇÀ» ³ÖÀ¸´Ï cpu number ·Î Ç¥Çö. ===================== 2) ÇØ´ç ÇÁ·Î¼¼½ºÀÇ ÁöÁ¤µÈ CPU º¯°æ Çϱâ # taskset -pc "processor number" pid ==================== # taskset -pc 0-7 4444 <-- 0,3 // 0-7(0,1,2,3,4,5,6,7) ÇüÅ·ΠÁöÁ¤ ÇÒ¼ö ÀÖ´Ù. pid 4444's current affinity list: 0,3 pid 4444's new affinity list: 0-7 (16 Áø¼ö´Â º¸±â Èûµå´Ï ¿¹Á¦¿¡¼ Á¦¿Ü) ==================== 3) command »ç¿ëÇÏ¿© ±¸µ¿½Ã º¯°æÇϱâ # taskset -c "process nuber" "command" ===================== # taskset -c 0,1,2,3,4 /etc/init.d/httpd start ½ÇÁö·Î´Â -pc ¿É¼ÇÀ» ½áµµ Á¤»óÀûÀ¸·Î ±¸µ¿µÈ´Ù.) ===================== ¡á °í·Á »çÇ× 1) ÀÚ½Ä Process ¿¡ ÇØ´ç ¼³Á¤ ½Â°è ¿©ºÎ * ºÎ¸ðÀÇ Á¤º¸¸¦ ±×´ë·Î µû¶ó °©´Ï´Ù. ´Ü, ÇØ´ç CPUÀÇ ÁöÁ¤Àü¿¡ ±¸µ¿µÈ ÀÚ½Ä ÇÁ·Î¼¼½ºÀÇ ¼³Á¤Àº º¯°æµÇÁö ¾Ê½À´Ï´Ù. Ȥ, º¯°æÀü¿¡ ±¸µ¿µÈ ÀÚ½Ä ÇÁ·Î¼¼½º°¡ ÀÖ´Ù¸é °°ÀÌ(ÀÏÀÏÀÌ) º¯°æÇØ Áà¾ß ÇÕ´Ï´Ù. ** taskset -c "process nuber" "command" ÇüÅ·Π±¸µ¿ÇÏ¿´À»¶§¿¡´Â »ó°ü ¾ø½À´Ï´Ù. ¿©±â¼ ¹®Á¦½Ã µÇ´Â °ÍÀº ±¸µ¿ ÈÄ¿¡ CPU ÁöÁ¤À» º¯°æÇÏ¿´À» ¶§ ÀÔ´Ï´Ù. À¯¿ëÇÑ Á¤º¸ µÇ½Ã±â¸¦ ¹Ù¶ø´Ï´Ù. |
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