我们常常会在新开的服搭建一个游戏的server,有时候要进行压力測试,那么怎样来看呢,一般我们会通过top命令查看各个进程的cpu和内存占用情况,获得到了我们的进程id,然后我们或许会通过pstack命令查看里边的各个线程id以及相应的线程如今正在做什么事情,分析多组数据就能够获得哪些线程里有慢操作影响了server的性能,从而得到解决方式。

比方这种以组数据:

[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<FightInfo*>::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

多组数据显示表明我们的主逻辑线程的确占用的cpu非常高,发现事实上在Achieve::update() 的时候做了太多没实用的推断,而且能够降低循环进入的次数的。所以我在这里进行了优化

后来用了一下iptraf命令查看了网络流量:

第一项:IP流量监控

第二项:常规查看网卡流量状态。仅仅查看各网卡的总流量

第三项:具体查看网卡流量状态。比方按TCP,UDP,ARP等协议查看

选all interfaces,查看全部网卡接口



界面分上下两部分,上部分可具体显示哪个与之相连的IP。发了多少包,即时流量是多少,下部分,能够显示udp等信息。

显示连接本地server的全部连接流量情况

另外不得不提到另外一个命令sar:

sar有非常多用途。假设要来监控网络流量。使用以下的命令行方式:

sar -n DEV interval count

当中。interval是统计时间间隔。以秒为单位;count是总共统计几次。假设为0就不断的统计直到 Ctrl+C 打断,否则运行count次就退出。

比方:sar -n DEV 1 4

比方:sar -n DEV 10 0

IFACE:LAN接口

rxpck/s:每秒钟接收的数据包

txpck/s:每秒钟发送的数据包

rxbyt/s:每秒钟接收的字节数

txbyt/s:每秒钟发送的字节数

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

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