關于linux的進程中的各個線程cpu占用情況進行分析和查看
關于linux的進程中的各個線程cpu占用情況進行分析和查看
CPU是電腦的重要組成部分，是不可缺少的角色。下面是學習啦小編帶來的關于關于linux的進程中的各個線程cpu占用情況進行分析和查看的內容，歡迎閱讀!
關于linux的進程中的各個線程cpu占用情況進行分析和查看：
我們經常會在新開的服搭建一個游戲的服務器，有時候要進行壓力測試，那么如何來看呢，一般我們會通過top命令查看各個進程的cpu和內存占用情況，獲得到了我們的進程id，然后我們也許會通過pstack命令查看里邊的各個線程id以及對應的線程現在正在做什么事情，分析多組數據就可以獲得哪些線程里有慢操作影響了服務器的性能，從而得到解決方案。比如這樣的以組數據：
[root@AY130816144542124256Z bin]# pstack 30222
Thread 9 (Thread 0x7f729adc1700 (LWP 30251)):
#0 0x00007f72a429b720 in sem_wait () from /lib64/libpthread.so.0
#1 0x0000000000ac5eb6 in Semaphore::down() ()
#2 0x0000000000ac5cac in Queue::get() ()
#3 0x00000000009a583f in DBManager::processUpdate(Queue*) ()
#4 0x00000000009a4bfb in dbUpdateThread(void*) ()
#5 0x00007f72a4295851 in start_thread () from /lib64/libpthread.so.0
#6 0x00007f72a459267d in clone () from /lib64/libc.so.6
Thread 8 (Thread 0x7f727c579700 (LWP 30252)):
#0 0x00007f72a429b720 in sem_wait () from /lib64/libpthread.so.0
#1 0x0000000000ac5eb6 in Semaphore::down() ()
#2 0x0000000000ac5cac in Queue::get() ()
#3 0x00000000009a5799 in DBManager::processQuery(Queue*) ()
#4 0x00000000009a4c3a in dbQueryThread(void*) ()
#5 0x00007f72a4295851 in start_thread () from /lib64/libpthread.so.0
#6 0x00007f72a459267d in clone () from /lib64/libc.so.6
Thread 7 (Thread 0x7f7257fff700 (LWP 30253)):
#0 0x00007f72a42997bb in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1 0x00007f72a549ee08 in utils::thread::condition_impl::timed_wait(int) () from /usr/local/utils-0.0.1/lib/libutils.so.0.0.1
#2 0x00007f72a549ebd3 in utils::thread::Condition::timed_wait(int) () from /usr/local/utils-0.0.1/lib/libutils.so.0.0.1
#3 0x00000000009d5f57 in utils::MessageQueue::pop() ()
#4 0x00000000009d5557 in FightReport::svc() ()
#5 0x00007f72a5494b45 in utils::Task_Base::thread_proc(void*) () from /usr/local/utils-0.0.1/lib/libutils.so.0.0.1
#6 0x00007f72a4295851 in start_thread () from /lib64/libpthread.so.0
#7 0x00007f72a459267d in clone () from /lib64/libc.so.6
Thread 6 (Thread 0x7f72397b7700 (LWP 30254)):
#0 0x00007f72a4588fc3 in poll () from /lib64/libc.so.6
#1 0x00007f72a0fbded4 in __libc_res_nsend () from /lib64/libresolv.so.2
#2 0x00007f72a0fba76a in __libc_res_nquery () from /lib64/libresolv.so.2
#3 0x00007f72a0fbad29 in __libc_res_nquerydomain () from /lib64/libresolv.so.2
#4 0x00007f72a0fbb9cf in __libc_res_nsearch () from /lib64/libresolv.so.2
#5 0x00007f729adc37a7 in _nss_dns_gethostbyname4_r () from /lib64/libnss_dns.so.2
#6 0x00007f72a457a4c3 in gaih_inet () from /lib64/libc.so.6
#7 0x00007f72a457cb20 in getaddrinfo () from /lib64/libc.so.6
#8 0x00007f72a56fc782 in Curl_getaddrinfo_ex () from /usr/lib64/libcurl.so.4
#9 0x00007f72a56f1d42 in Curl_getaddrinfo () from /usr/lib64/libcurl.so.4
#10 0x00007f72a56c9e77 in Curl_resolv () from /usr/lib64/libcurl.so.4
#11 0x00007f72a56ca138 in Curl_resolv_timeout () from /usr/lib64/libcurl.so.4
#12 0x00007f72a56d8d88 in ?? () from /usr/lib64/libcurl.so.4
#13 0x00007f72a56ddb79 in ?? () from /usr/lib64/libcurl.so.4
#14 0x00007f72a56de76e in Curl_connect () from /usr/lib64/libcurl.so.4
#15 0x00007f72a56e69b0 in Curl_perform () from /usr/lib64/libcurl.so.4
#16 0x0000000000ae6e3d in HttpClient::svc() ()
#17 0x00007f72a5494b45 in utils::Task_Base::thread_proc(void*) () from /usr/local/utils-0.0.1/lib/libutils.so.0.0.1
#18 0x00007f72a4295851 in start_thread () from /lib64/libpthread.so.0
#19 0x00007f72a459267d in clone () from /lib64/libc.so.6
Thread 5 (Thread 0x7f721af6f700 (LWP 30255)):
#0 0x00007f72a455691d in nanosleep () from /lib64/libc.so.6
#1 0x000000000098cb8a in Sleep(unsigned long) ()
#2 0x000000000098b87d in DynResource::svc() ()
#3 0x00007f72a5494b45 in utils::Task_Base::thread_proc(void*) () from /usr/local/utils-0.0.1/lib/libutils.so.0.0.1
#4 0x00007f72a4295851 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f72a459267d in clone () from /lib64/libc.so.6
Thread 4 (Thread 0x7f71fc727700 (LWP 30256)):
#0 0x00007f72a455691d in nanosleep () from /lib64/libc.so.6
#1 0x000000000098cb8a in Sleep(unsigned long) ()
#2 0x0000000000a61516 in PlayerOpLogThread::svc() ()
#3 0x00007f72a5494b45 in utils::Task_Base::thread_proc(void*) () from /usr/local/utils-0.0.1/lib/libutils.so.0.0.1
#4 0x00007f72a4295851 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f72a459267d in clone () from /lib64/libc.so.6
Thread 3 (Thread 0x7f71ddedf700 (LWP 30257)):
#0 0x00007f72a4592c73 in epoll_wait () from /lib64/libc.so.6
#1 0x00007f72a51f334f in Epoll_Reactor::run_reactor_event_loop() () from /usr/local/net_manager-0.0.2/lib/libnet_manager.so.0.0.2
#2 0x00007f72a51f2523 in Net_Thread::svc() () from /usr/local/net_manager-0.0.2/lib/libnet_manager.so.0.0.2
#3 0x00007f72a5494b45 in utils::Task_Base::thread_proc(void*) () from /usr/local/utils-0.0.1/lib/libutils.so.0.0.1
#4 0x00007f72a4295851 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f72a459267d in clone () from /lib64/libc.so.6
Thread 2 (Thread 0x7f71bf697700 (LWP 30258)):
#0 0x00007f72a4592c73 in epoll_wait () from /lib64/libc.so.6
#1 0x00007f72a51f334f in Epoll_Reactor::run_reactor_event_loop() () from /usr/local/net_manager-0.0.2/lib/libnet_manager.so.0.0.2
#2 0x00007f72a51f2523 in Net_Thread::svc() () from /usr/local/net_manager-0.0.2/lib/libnet_manager.so.0.0.2
#3 0x00007f72a5494b45 in utils::Task_Base::thread_proc(void*) () from /usr/local/utils-0.0.1/lib/libutils.so.0.0.1
#4 0x00007f72a4295851 in start_thread () from /lib64/libpthread.so.0
#5 0x00007f72a459267d in clone () from /lib64/libc.so.6
Thread 1 (Thread 0x7f72a60ae7e0 (LWP 30222)):
#0 0x00007f72a4584c95 in _xstat () from /lib64/libc.so.6
#1 0x00007f72a45483e0 in __tzfile_read () from /lib64/libc.so.6
#2 0x00007f72a4547864 in tzset_internal () from /lib64/libc.so.6
#3 0x00007f72a4547b20 in tzset () from /lib64/libc.so.6
#4 0x00007f72a4546699 in timelocal () from /lib64/libc.so.6
#5 0x0000000000b0b08d in Achieve::GetRemainTime(AchieveTemplate*) ()
#6 0x0000000000b115ca in Achieve::update() ()
#7 0x0000000000a197ce in Player::update() ()
#8 0x0000000000b1b272 in PlayerMng::Tick() ()
#9 0x0000000000a73105 in GameServer::FrameTick(unsigned int) ()
#10 0x0000000000a6ff80 in GameServer::run() ()
#11 0x0000000000a773a1 in main ()
[root@AY130816144542124256Z gameserver]# ps -eLo pid,lwp,pcpu | grep 30222
30222 30222 31.4
30222 30251 0.0
30222 30252 0.0
30222 30253 0.0
30222 30254 0.0
30222 30255 0.0
30222 30256 1.2
30222 30257 1.2
30222 30258 1.0
多組數據顯示表明我們的主邏輯線程的確占用的cpu很高，發現其實在Achieve::update() 的時候做了太多沒有用的判斷，并且可以減少循環進入的次數的，所以我在這里進行了優化
后來用了一下iptraf命令查看了網絡流量：
第一項：IP流量監控
第二項：常規查看網卡流量狀態。只查看各網卡的總流量
第三項：詳細查看網卡流量狀態。比如按TCP，UDP，ARP等協議查看
選all interfaces，查看所有網卡接口
界面分上下兩部分，上部分可詳細顯示哪個與之相連的IP，發了多少包，即時流量是多少，下部分，可以顯示udp等信息。
顯示連接本地服務器的所有連接流量情況
另外不得不提到另外一個命令sar：
sar有很多用途，如果要來監控網絡流量，使用下面的命令行方式：
sar -n DEV interval count
其中，interval是統計時間間隔，以秒為單位;count是總共統計幾次，如果為0就不斷的統計直到 Ctrl+C 打斷，否則執行count次就退出。
比如：sar -n DEV 1 4
比如：sar -n DEV 10 0
IFACE：LAN接口
rxpck/s：每秒鐘接收的數據包
txpck/s：每秒鐘發送的數據包
rxbyt/s：每秒鐘接收的字節數
txbyt/s：每秒鐘發送的字節數
sar -n DEV -u 1 10
07:22:01 PM IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
07:22:02 PM lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
07:22:02 PM eth0 2.47 0.00 0.11 0.00 0.00 0.00 0.00
07:22:02 PM eth1 80.25 22.22 3.53 3.52 0.00 0.00 0.00
07:22:02 PM CPU %user %nice %system %iowait %steal %idle
07:22:03 PM all 1.85 0.00 1.06 0.00 0.00 97.09
07:22:02 PM IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
07:22:03 PM lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
07:22:03 PM eth0 0.00 0.00 0.00 0.00 0.00 0.00 0.00
07:22:03 PM eth1 66.67 19.75 2.95 3.22 0.00 0.00 0.00
07:22:03 PM CPU %user %nice %system %iowait %steal %idle
07:22:04 PM all 2.12 0.00 1.06 0.00 0.00 96.82
07:22:03 PM IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
07:22:04 PM lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
07:22:04 PM eth0 7.32 4.88 0.65 0.38 0.00 0.00 0.00
07:22:04 PM eth1 85.37 28.05 4.18 3.88 0.00 0.00 0.00
07:22:04 PM CPU %user %nice %system %iowait %steal %idle
07:22:05 PM all 3.96 0.00 2.64 0.00 0.00 93.40
07:22:04 PM IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
07:22:05 PM lo 412.50 412.50 104.44 104.44 0.00 0.00 0.00
07:22:05 PM eth0 13.75 12.50 1.32 1.26 0.00 0.00 0.00
07:22:05 PM eth1 903.75 707.50 174.12 62.42 0.00 0.00 0.00
07:22:05 PM CPU %user %nice %system %iowait %steal %idle
07:22:06 PM all 5.25 0.00 4.46 2.10 0.00 88.19
07:22:05 PM IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
07:22:06 PM lo 849.41 849.41 154.54 154.54 0.00 0.00 0.00
07:22:06 PM eth0 0.00 0.00 0.00 0.00 0.00 0.00 0.00
07:22:06 PM eth1 1287.06 1337.65 84.48 461.76 0.00 0.00 0.00
07:22:06 PM CPU %user %nice %system %iowait %steal %idle
07:22:07 PM all 1.85 0.00 1.06 0.00 0.00 97.09
07:22:06 PM IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
07:22:07 PM lo 0.00 0.00 0.00 0.00 0.00 0.00 0.00
07:22:07 PM eth0 4.94 0.00 0.22 0.00 0.00 0.00 0.00
07:22:07 PM eth1 97.53 19.75 4.32 3.18 0.00 0.00 0.00
07:22:07 PM CPU %user %nice %system %iowait %steal %idle
07:22:08 PM all 1.58 0.00 1.32 0.00 0.00 97.11
07:22:07 PM IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
07:22:08 PM lo 4.94 4.94 0.31 0.31 0.00 0.00 0.00
07:22:08 PM eth0 1.23 0.00 0.06 0.00 0.00 0.00 0.00
07:22:08 PM eth1 67.90 24.69 3.02 3.94 0.00 0.00 0.00
Average: CPU %user %nice %system %iowait %steal %idle
Average: all 3.63 0.00 2.55 0.84 0.00 92.98
Average: IFACE rxpck/s txpck/s rxkB/s txkB/s rxcmp/s txcmp/s rxmcst/s
Average: lo 212.61 212.61 50.54 50.54 0.00 0.00 0.00
Average: eth0 42.79 41.70 3.27 41.84 0.00 0.00 0.00
Average: eth1 492.48 432.48 53.63 110.40 0.00 0.00 0.00
看了關于linux的進程中的各個線程cpu占用情況進行分析和查看文章內容的人還看：
1.Linux TOP命令 按內存占用排序和按CPU占用排序