試驗環境redhat Linux5.4 x86_64
版本:uname -ar
記憶體:cat/proc/meninfo
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MemTotal: 16433032 kB
MemFree: 45260 kB
Buffers: 383808 kB
Cached: 12057620 kB
SwapCached: 0 kB
Active: 6903792 kB
Inactive: 8644108 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 16433032 kB
LowFree: 45260 kB
SwapTotal: 18481144 kB
SwapFree: 18103104 kB
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CPU: cat/proc/cupinfo
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processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 26
model name : Intel(R) Xeon(R) CPU X5550 @ 2.67GHz
stepping : 5
cpu MHz : 2666.845
cache size : 8192 KB
physical id : 0
siblings : 8
core id : 0
cpu cores : 4
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ps aux
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USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 10348 680 ? Ss Jan25 2:21 init [5]
-----------------------------------
top
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top - 12:47:09 up 111 days, 19:53, 7 users, load average: 0.00, 0.01, 0.00
Tasks: 371 total, 1 running, 369 sleeping, 0 stopped, 1 zombie
Cpu(s): 0.0%us, 0.1%sy, 0.0%ni, 99.7%id, 0.1%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 16433032k total, 16359268k used, 73764k free, 383464k buffers
Swap: 18481144k total, 378040k used, 18103104k free, 12032860k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
27589 mqm 15 0 12872 1316 820 R 0.7 0.0 0:21.20 top
8836 oracle 16 0 4941m 32m 18m S 0.3 0.2 906:38.49 oracle
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從/proc檔案系統擷取性能參資料指令:
cpu使用率:/proc/stat
---------------------------------
cpu 14761575 87263 15321636 15414231287 17126684 191864 2360695 0
cpu0 798648 2363 326166 965359316 6140 0 12492 0
說明:user(14761575)從系統啟動開始累計到目前時刻,使用者态的CPU時間(機關:
Jiffies ),不包含nice值為負程序,1Jiffies =0.01秒。
nice (87263) 從系統啟動開始累計到目前時刻,nice值為負的程序所占用的CPU時間(機關:jiffies)
system (15321636) 從系統啟動開始累計到目前時刻,核心時間(機關:jiffies)
idle (15414231287) 從系統啟動開始累計到目前時刻,除硬碟IO等待時間以外其它等待時間(機關:jiffies)
iowait (17126684) 從系統啟動開始累計到目前時刻,硬碟IO等待時間(機關:jiffies),
irq (191864) 從系統啟動開始累計到目前時刻,硬中斷時間(機關:jiffies)
softirq (2360695) 從系統啟動開始累計到目前時刻,軟中斷時間(機關:jiffies)
---------------------------------
記憶體使用情況:/proc/meninfo
網絡負載資訊:/proc/net/dev
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Inter-|Receive |Transmit face |bytes packets errs drop fifo frame compressed multicast|bytes packets errs drop fifo colls carrier compressed
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