Dear all, I have a java game server app running on a 8 kernel suse linux.The cpu usage and io usage is low, but the load average is high(from 4.0 to 13.0). my questiones: 1、is correct that useing cpus * 70% to evaluate the load of server for multithread app； 2、how can i find the reason rise the high load average? The following is the stat info. the top result: top - 19:45:01 up 110 days, 2:25, 2 users, load average: 8.11, 8.75, 9.22 Tasks: 146 total, 1 running, 143 sleeping, 0 stopped, 2 zombie Cpu(s): 14.7%us, 20.8%sy, 0.0%ni, 63.9%id, 0.0%wa, 0.0%hi, 0.1%si, 0.5%st Mem: 7168144k total, 5679216k used, 1488928k free, 487824k buffers Swap: 2104504k total, 68k used, 2104436k free, 2500808k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 15745 root 22 0 2291m 1.1g 10m S 190 15.7 1009:33 java 15764 root 18 0 2125m 627m 10m S 93 9.0 295:07.57 java 3647 root 16 0 5656 1248 880 R 0 0.0 0:00.14 top 10415 root 16 0 52248 5748 1988 S 0 0.1 15:29.60 tnetd 1 root 16 0 784 304 256 S 0 0.0 0:40.59 init 2 root RT 0 0 0 0 S 0 0.0 1:11.72 migration/0 3 root 34 19 0 0 0 S 0 0.0 0:00.01 ksoftirqd/0 4 root RT 0 0 0 0 S 0 0.0 1:11.74 migration/1 5 root 34 19 0 0 0 S 0 0.0 0:00.05 ksoftirqd/1 6 root RT 0 0 0 0 S 0 0.0 1:10.98 migration/2 7 root 34 19 0 0 0 S 0 0.0 0:00.02 ksoftirqd/2 8 root RT 0 0 0 0 S 0 0.0 1:10.34 migration/3 9 root 34 19 0 0 0 S 0 0.0 0:00.04 ksoftirqd/3 10 root RT 0 0 0 0 S 0 0.0 1:10.17 migration/4 11 root 34 19 0 0 0 S 0 0.0 0:00.02 ksoftirqd/4 12 root RT 0 0 0 0 S 0 0.0 1:09.94 migration/5 13 root 34 19 0 0 0 S 0 0.0 0:00.03 ksoftirqd/5 14 root RT 0 0 0 0 S 0 0.0 1:09.27 migration/6 15 root 34 19 0 0 0 S 0 0.0 0:00.04 ksoftirqd/6 16 root RT 0 0 0 0 S 0 0.0 1:07.70 migration/7 17 root 34 19 0 0 0 S 0 0.0 0:00.14 ksoftirqd/7 18 root 10 -5 0 0 0 S 0 0.0 0:00.76 events/0 19 root 10 -5 0 0 0 S 0 0.0 0:00.42 events/1 20 root 10 -5 0 0 0 S 0 0.0 0:00.42 events/2 21 root 10 -5 0 0 0 S 0 0.0 0:00.36 events/3 22 root 10 -5 0 0 0 S 0 0.0 0:00.43 events/4 23 root 10 -5 0 0 0 S 0 0.0 0:00.31 events/5 24 root 10 -5 0 0 0 S 0 0.0 0:00.32 events/6 25 root 10 -5 0 0 0 S 0 0.0 0:00.64 events/7 26 root 11 -5 0 0 0 S 0 0.0 0:00.00 khelper 27 root 10 -5 0 0 0 S 0 0.0 0:00.00 kthread 28 root 11 -5 0 0 0 S 0 0.0 0:00.00 xenwatch 29 root 10 -5 0 0 0 S 0 0.0 0:00.00 xenbus 43 root 10 -5 0 0 0 S 0 0.0 0:00.00 kblockd/0 44 root 10 -5 0 0 0 S 0 0.0 0:00.00 kblockd/1 45 root 10 -5 0 0 0 S 0 0.0 0:00.00 kblockd/2 46 root 10 -5 0 0 0 S 0 0.0 0:00.00 kblockd/3 47 root 10 -5 0 0 0 S 0 0.0 0:00.00 kblockd/4 48 root 10 -5 0 0 0 S 0 0.0 0:00.00 kblockd/5 the vmstat result: procs -----------memory---------- ---swap-- -----io---- -system-- -----cpu------ r b swpd free buff cache si so bi bo in cs us sy id wa st 6 0 68 1423620 487824 2501068 0 0 0 3 0 0 2 3 94 0 0 6 0 68 1421868 487824 2501068 0 0 0 0 31245 60892 16 19 64 0 0 6 0 68 1423836 487824 2501068 0 0 0 0 28340 52949 15 20 65 0 0 6 0 68 1421604 487824 2501068 0 0 0 28 23887 41099 14 21 64 0 0 8 0 68 1421108 487824 2501068 0 0 0 0 26606 56529 15 21 64 0 0 7 0 68 1422084 487824 2501068 0 0 0 0 28572 54739 15 21 64 0 0 6 0 68 1405856 487824 2501068 0 0 0 0 23280 49038 16 21 63 0 0 8 0 68 1405608 487824 2501068 0 0 0 0 25781 50413 16 21 63 0 1 13 0 68 1400208 487824 2501068 0 0 0 0 23120 44107 16 24 60 0 1 7 0 68 1401240 487824 2501068 0 0 0 0 22262 43509 17 21 62 0 1 the iostat result avg-cpu: %user %nice %system %iowait %steal %idle 2.35 0.00 2.79 0.17 0.42 94.28 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 1.40 0.00 2.06 0.07 29.62 0.03 14.81 14.43 0.03 13.67 5.08 1.05 sda4 0.00 1.43 0.00 1.29 0.05 22.73 0.02 11.37 17.65 0.02 12.15 4.84 0.62 avg-cpu: %user %nice %system %iowait %steal %idle 20.38 0.00 25.62 0.00 0.50 54.12 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sda4 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 avg-cpu: %user %nice %system %iowait %steal %idle 19.75 0.00 25.62 0.00 0.38 54.25 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sda4 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 avg-cpu: %user %nice %system %iowait %steal %idle 19.18 0.00 24.75 0.00 0.25 55.07 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 sda4 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 avg-cpu: %user %nice %system %iowait %steal %idle 17.00 0.00 26.38 2.38 0.38 54.37 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 10.00 0.00 31.00 0.00 336.00 0.00 168.00 10.84 0.79 25.42 8.52 26.40 sda4 0.00 63.00 0.00 46.00 0.00 880.00 0.00 440.00 19.13 1.11 24.17 2.78 12.80 avg-cpu: %user %nice %system %iowait %steal %idle 15.38 0.00 22.62 0.25 0.38 61.62 Device: rrqm/s wrqm/s r/s w/s rsec/s wsec/s rkB/s wkB/s avgrq-sz avgqu-sz await svctm %util sda 0.00 7.00 0.00 7.00 0.00 120.00 0.00 60.00 17.14 0.05 6.86 6.86 4.80 sda4 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 -- To unsubscribe 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