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y123456yz / Tcprstat

Licence: gpl-3.0
服务器时延统计工具,在原有功能基础上,增加时延阈值统计,记录超过阈值的包个数,并把数据包时间戳记录到日志文件,这样可以根据时间戳快速定位到抓包文件中对应的包,从而可以快速定位到大时延包,避免了人肉搜索抓包文件,提高问题排查效率,所有参数可配置。可以以在线方式和离线方式分析redis、memcached、mysql、nginx等请求应答系统的时延,并定位慢响应数据报文。(源码学习交流QQ群:568892619)

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/*

nginx高并发设计优秀思想应用于其他高并发代理中间件:

redis、nginx、memcache、twemproxy、mongodb等更多中间件,分布式系统,高性能服务端核心思想实现博客:

参考Lowercases的tcprstat做了修改,新增了慢响应个数统计,时间戳、慢响应时间日志记录,有利于快速定位慢响应数据报文,从而分析系统中可能存在的潜在问题。

QQ交流群1(针对在校生)-(群号:568892619 )

群号:568892619
在校生nginx、redis、memcache、twemproxy等源码实现交流

QQ交流群2(针对已工作,有一些技术基础的同学)-(581089275)

群号: 581089275
主要针对有一定技术基础的开发人员,提升其基础组件源码技术深度(如nginx、redis、memcache、twemproxy、mongodb、存储引擎、内核网络协议栈等)

install

centos 6.5
yum install perf
yum -y install bison yacc
yum -y install flex
yum install patch
yum install glibc-static
autoreconf -fvi
./configure
make & make install

命令行参数:

-p:端口 -l:ip -o:打印时延超过-T参数指定的包的数量 -T:时延统计阈值,超过该时间的会通过tc打印超过该时延阈值的包个数 -o:如果有包的时延超过阈值,则把该包的时间戳记录到该文件中,这样可以帮助分析报文 -t:统计打印时间间隔 -n:最多打印这么多次 -r:离线统计功能的抓包文件

示例:

示例一:在线时延实时统计

下面是统计10.12.1.1服务器上面,端口为12322的数据包的响应时间:
-t 1 表示每隔1s统计一次,也就是每行的打印
-T 1 表示时延超过1ms的请求的个数。
-o tcprstat.log 把时延超过-T设置的1ms的数据包时间戳记录到文件,并记录该包的响应时间,见后面的时延tcprstat.log内容

[[email protected] test]# ./tcprstat -l 10.12.1.1 -p 12322 -n 3333 -t 1 -T 1 -o tcprstat.log
timestamp count max min avg med stddev tc 95_max 95_avg 95_std 99_max 99_avg 99_std
1483946797 4002 1466 42 199 194 106 6 359 186 82 465 194 92
1483946798 3498 1456 44 208 211 103 1 364 196 87 463 204 94
1483946799 3485 1262 40 203 200 103 1 371 190 87 479 199 96
1483946800 3867 2499 38 206 202 116 5 382 191 86 503 201 96
1483946801 3992 1973 41 201 197 114 6 362 186 84 499 195 94
1483946802 4271 1828 39 196 193 102 1 362 183 83 476 192 91
1483946803 3591 1678 42 206 202 110 5 374 192 86 511 201 94
1483946804 4510 1889 32 195 190 101 2 351 183 78 457 191 87
1483946805 4580 1877 42 192 185 100 3 349 179 78 460 188 86
1483946806 4386 1999 37 192 187 105 4 352 179 83 462 187 91
1483946807 4885 1821 32 183 180 97 1 333 171 80 421 179 87
1483946808 4898 1898 40 193 192 98 2 344 180 80 446 189 86
1483946809 4208 2015 41 197 194 105 2 357 185 81 462 193 90
1483946810 3970 1101 42 196 192 96 2 353 184 79 448 192 88
1483946811 4146 1252 41 197 193 100 2 353 184 82 456 192 90
1483946812 3846 1024 41 201 197 101 2 361 189 82 456 197 91
1483946813 3717 1428 42 207 206 101 4 369 195 83 457 203 92
1483946814 3933 1534 43 199 194 102 3 353 186 82 446 194 90
1483946815 4014 1625 37 199 198 98 1 352 187 81 446 195 89
1483946816 3923 752 38 196 194 97 0 353 184 84 456 193 91
1483946817 3993 2116 42 201 199 102 4 354 188 83 449 196 90
1483946818 4005 1641 44 201 199 101 1 358 189 82 462 197 91
1483946819 4246 1549 42 195 187 101 3 354 183 81 442 191 89

tcprstat.log记录慢响应数据包的时间戳,delay_time单位为us:
[[email protected] test]# cat tcprstat.log
timestamp: 1483946796.658649 delay_time: 1136(该数据报文产生时间戳是1483946796.658649,响应时间戳是1483946796.658649 + 1136us)
timestamp: 1483946796.884682 delay_time: 1292
timestamp: 1483946796.954704 delay_time: 1326
timestamp: 1483946797.327451 delay_time: 1399
timestamp: 1483946797.437754 delay_time: 1085
timestamp: 1483946797.446523 delay_time: 1466
timestamp: 1483946797.804099 delay_time: 1456
timestamp: 1483946799.176803 delay_time: 1262
timestamp: 1483946799.643757 delay_time: 2499
timestamp: 1483946800.97223 delay_time: 1151
timestamp: 1483946800.103771 delay_time: 1164
timestamp: 1483946800.120869 delay_time: 1315
timestamp: 1483946800.388201 delay_time: 1557
timestamp: 1483946800.655855 delay_time: 1191
timestamp: 1483946800.872843 delay_time: 1153
timestamp: 1483946800.963374 delay_time: 1871
timestamp: 1483946801.9984 delay_time: 1973
timestamp: 1483946801.152817 delay_time: 1951
timestamp: 1483946801.181594 delay_time: 1376
timestamp: 1483946801.852420 delay_time: 1828
timestamp: 1483946802.627323 delay_time: 1037
timestamp: 1483946802.857785 delay_time: 1134
timestamp: 1483946803.22034 delay_time: 1546
timestamp: 1483946803.243553 delay_time: 1678
timestamp: 1483946803.255998 delay_time: 1299
timestamp: 1483946803.672670 delay_time: 1889
timestamp: 1483946804.297324 delay_time: 1062
timestamp: 1483946804.779147 delay_time: 1306
timestamp: 1483946805.76330 delay_time: 1877
timestamp: 1483946805.398714 delay_time: 1030
timestamp: 1483946805.599980 delay_time: 1036
timestamp: 1483946805.834343 delay_time: 1999
timestamp: 1483946806.332698 delay_time: 1352
timestamp: 1483946806.543452 delay_time: 1447
timestamp: 1483946807.260249 delay_time: 1821

示例二:离线分析,通过wireshark工具查看时间戳就可以确定出抓包文件中慢响应报文的时间戳,就可以快速定位慢响应报文,分析响应慢的原因

[[email protected] test]# tcpdump -i bond0 port 15211 -w test.pcap
tcpdump: listening on bond0, link-type EN10MB (Ethernet), capture size 65535 bytes
^C90800 packets captured
91141 packets received by filter
291 packets dropped by kernel
[[email protected] test]#
[[email protected] test]# ./tcprstat -l 10.12.1.1 -p 15211 -n 3333 -t 1 -T 1 -o tcprstat.log -r test.pcap
timestamp count max min avg med stddev tc 95_max 95_avg 95_std 99_max 99_avg 99_std
1483947284 5041 1943 38 181 180 97 2 334 169 79 441 177 87
1483947285 4957 1677 39 184 185 98 3 330 172 79 440 180 86
1483947286 4799 1147 38 189 190 97 1 345 177 81 449 185 89
1483947287 4982 1317 39 185 182 96 2 338 173 82 417 181 88
[[email protected] test]#
[[email protected] test]# cat tcprstat.log
timestamp: 1483947283.777246 delay_time: 1943
timestamp: 1483947284.94361 delay_time: 1015
timestamp: 1483947284.848973 delay_time: 1216
timestamp: 1483947285.397089 delay_time: 1187
timestamp: 1483947285.438686 delay_time: 1677
timestamp: 1483947286.702593 delay_time: 1147
timestamp: 1483947286.869181 delay_time: 1317
timestamp: 1483947287.400980 delay_time: 1161
timestamp: 1483947287.794503 delay_time: 1456
timestamp: 1483947287.828082 delay_time: 1333

统计项:

服务器时延统计工具,增加时延阈值统计,记录超过阈值的包个数,并把数据包时间戳记录到日志文件,这样可以更加时间戳快速定位到抓包文件,所有参数可配置。
统计信息:
timestamp:时间戳
count:包总数
max:最大时延
min:最小时延
avg:平均时延
med:按照时延从小到达排序,最中间的时延值,例如100个包,则第50个包的时延为多少
stddev:每个包的时延平方之和的平均值,和avg
的平方的差值,该值可以反映时延波动情况
tc:时延超过40ms的包个数,可以通过-T参数指定这个时间
95_max:按照时延从小到达排序,第95%的时延值,例如1000个请求,把他们的时延值排序,第%95的时延也就是第950个数组成员的时延值
95_avg: 按照时延从小到达排序,时延值小的95%时延的平均值 95_std:按照时延从小到达排序,时延值小的95%的stddev值 99_max:按照时延从小到达排序,第95%的时延值,例如1000个请求,把他们的时延值排序,第%95的时延也就是第990个数组成员的时延值
99_avg:按照时延从小到达排序,时延值小的99%时延的平均值 99_std:按照时延从小到达排序,时延值小的99%的stddev值

使用方法:
抓包文件离线分析:tcprstat -p 1111 -l 10.2.x.x -t 1 -n 333333 -r xxx.pcap -T 10 -o timetamp.txt
在线分析:tcprstat -p 1111 -l 10.2.x.x -t 1 -n 333333 -T 20

编译说明: 依赖pthread线程静态库

编译异常处理:

如果出现如下异常,一般是系统netlink库引起的,卸载掉libnl即可
../libpcap/libpcap-1.1.1//libpcap.a(pcap-linux.o): In function nl80211_init': pcap-linux.c:(.text+0xd1d): undefined reference tonl_handle_alloc'
pcap-linux.c:(.text+0xd31): undefined reference to genl_connect' pcap-linux.c:(.text+0xd3d): undefined reference togenl_ctrl_alloc_cache'
pcap-linux.c:(.text+0xd59): undefined reference to genl_ctrl_search_by_name' pcap-linux.c:(.text+0xda1): undefined reference tonl_handle_destroy'
pcap-linux.c:(.text+0xe0d): undefined reference to `nl_cache_free'
*/

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