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一,环境:\r\nbash-2.03# prtdiag -v\r\nSystem Configuration: Sun Microsystems sun4u Sun Enterprise 420R (4 X UltraSPARC-II 450MHz)\r\nSystem clock frequency: 113 MHz\r\nMemory size: 4096 Megabytes\r\n\r\n========================= CPUs =========================\r\n\r\n Run Ecache CPU CPU\r\nBrd CPU Module MHz MB Impl. Mask\r\n--- --- ------- ----- ------ ------ ----\r\n 0 0 0 450 4.0 US-II 10.0\r\n 0 1 1 450 4.0 US-II 10.0\r\n 0 2 2 450 4.0 US-II 10.0\r\n 0 3 3 450 4.0 US-II 10.0\r\n\r\n\r\n========================= IO Cards =========================\r\n\r\n Bus Freq\r\nBrd Type MHz Slot Name Model\r\n--- ---- ---- ---------- -------------------------------- ----------------------\r\n 0 PCI 33 On-Board network-SUNW,hme \r\n 0 PCI 33 On-Board scsi-glm/disk (block) Symbios,53C875 \r\n 0 PCI 33 On-Board scsi-glm/disk (block) Symbios,53C875 \r\n\r\nNo failures found in System\r\n===========================\r\n\r\n========================= HW Revisions =========================\r\n\r\nASIC Revisions:\r\n---------------\r\nPCI: pci Rev 4\r\nPCI: pci Rev 4\r\nCheerio: ebus Rev 1\r\n\r\nSystem PROM revisions:\r\n----------------------\r\n OBP 3.23.0 1999/06/30 13:53 POST 1.2.7 1999/05/24 17:33\r\nYou have new mail in /var/mail/root\r\n作oracle数据库服务器.\r\n\r\nCPU占用相当的高,一般user占用高可以理解,但kernel的比例大部分时间与user占用相当,甚至更高,这是什么原因呢?如何检查原因?\r\n\r\nload averages: 4.31, 4.00, 3.86 01:35:29\r\n214 processes: 211 sleeping, 3 on cpu\r\nCPU states: 18.6% idle, 35.5% user, 36.3% kernel, 9.6% iowait, 0.0% swap\r\nMemory: 4096M real, 2050M free, 1474M swap in use, 5424M swap free\r\n\r\n PID USERNAME THR PRI NICE SIZE RES STATE TIME CPU COMMAND\r\n28527 oracle 1 0 0 391M 351M cpu1 6:56 15.58% oracle\r\n 8129 oracle 1 54 0 390M 347M sleep 0:01 0.86% oracle\r\n23312 oracle 1 10 0 15M 5312K sleep 674:32 0.77% tnslsnr\r\n 7223 root 1 58 0 2376K 1752K cpu0 0:02 0.49% top\r\n11289 oracle 258 58 0 400M 353M sleep 76:24 0.41% oracle\r\n13882 root 4 58 0 125M 111M sleep 213:18 0.38% sp_cop\r\n11291 oracle 15 58 0 399M 348M sleep 122:34 0.33% oracle\r\n 8348 root 4 31 0 53M 9200K sleep 0:00 0.33% sp_ocap\r\n13918 root 4 58 0 104M 90M sleep 215:42 0.30% sp_cop\r\n 8351 root 4 52 0 53M 9272K sleep 0:00 0.22% sp_ocap\r\n 8355 daemon 1 34 0 391M 348M sleep 0:00 0.21% oracle\r\n 8343 oracle 1 52 0 390M 347M sleep 0:00 0.21% oracle\r\n 8354 daemon 1 32 0 391M 348M cpu1 0:00 0.19% oracle\r\n 8327 oracle 1 52 0 390M 347M sleep 0:00 0.18% oracle\r\n 8331 oracle 1 20 0 390M 347M sleep 0:00 0.16% oracle\r\n\r\nload averages: 3.86, 3.95, 3.86 01:37:52\r\n225 processes: 220 sleeping, 1 running, 4 on cpu\r\nCPU states: 0.0% idle, 31.3% user, 68.8% kernel, 0.0% iowait, 0.0% swap\r\nMemory: 4096M real, 2061M free, 1486M swap in use, 5411M swap free\r\n\r\n PID USERNAME THR PRI NICE SIZE RES STATE TIME CPU COMMAND\r\n28527 oracle 1 20 0 391M 351M run 8:24 15.69% oracle\r\n10138 root 1 28 0 2376K 1744K cpu3 0:00 0.88% top\r\n23312 oracle 1 21 0 15M 5312K sleep 674:37 0.87% tnslsnr\r\n10149 oracle 1 54 0 390M 347M sleep 0:00 0.54% oracle\r\n11291 oracle 15 58 0 399M 348M sleep 122:36 0.46% oracle\r\n13882 root 4 48 0 125M 111M sleep 213:20 0.37% sp_cop\r\n11289 oracle 258 58 0 400M 353M sleep 76:26 0.24% oracle\r\n13918 root 4 48 0 104M 90M sleep 215:44 0.24% sp_cop\r\n10309 oracle 1 33 0 390M 347M sleep 0:00 0.23% oracle\r\n10374 root 4 38 0 52M 6928K sleep 0:00 0.19% sp_ocap\r\n10359 oracle 1 55 0 390M 347M sleep 0:00 0.18% oracle\r\n10371 oracle 1 31 0 390M 347M cpu0 0:00 0.17% oracle\r\n10329 oracle 1 53 0 390M 347M sleep 0:00 0.16% oracle\r\n10373 oracle 1 21 0 390M 347M sleep 0:00 0.16% oracle\r\n10349 oracle 1 21 0 390M 347M sleep 0:00 0.16% oracle\r\n\r\nload averages: 3.93, 3.96, 3.87 01:38:15\r\n220 processes: 212 sleeping, 4 running, 4 on cpu\r\nCPU states: 11.7% idle, 32.1% user, 45.0% kernel, 11.3% iowait, 0.0% swap\r\nMemory: 4096M real, 2065M free, 1477M swap in use, 5421M swap free\r\n\r\n PID USERNAME THR PRI NICE SIZE RES STATE TIME CPU COMMAND\r\n28527 oracle 1 20 0 391M 351M run 8:38 15.77% oracle\r\n23312 oracle 1 32 0 15M 5312K sleep 674:38 0.82% tnslsnr\r\n10669 daemon 1 33 0 391M 349M sleep 0:00 0.38% oracle\r\n11291 oracle 15 58 0 399M 348M sleep 122:37 0.36% oracle\r\n10627 oracle 1 58 0 390M 347M sleep 0:00 0.35% oracle\r\n11289 oracle 258 58 0 400M 353M sleep 76:26 0.35% oracle\r\n13882 root 4 48 0 125M 111M sleep 213:20 0.34% sp_cop\r\n10389 oracle 1 58 0 390M 347M sleep 0:00 0.32% oracle\r\n10673 oracle 1 60 0 391M 350M sleep 0:00 0.32% oracle\r\n10649 root 1 58 0 2376K 1744K cpu0 0:00 0.30% top\r\n10665 root 4 60 0 53M 9880K sleep 0:00 0.27% sp_ocap\r\n13918 root 4 58 0 104M 90M sleep 215:44 0.23% sp_cop\r\n10679 oracle 1 42 0 390M 347M sleep 0:00 0.18% oracle\r\n10587 oracle 1 58 0 390M 347M sleep 0:00 0.18% oracle\r\n10777 root 4 58 0 57M 16M sleep 0:25 0.18% sp_ordr |
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