パフォーマンスをテストするために使用したnginxが提供する約2Mのわずかに大きいJavaScriptファイルがあり、約ab5秒で非常に遅かった。 CPUとメモリ使用量が非常に低く、CPU負荷も非常に低く、非常に高いが 逆にinterruputs非常に低く、ネットワーク帯域幅使用量は13Mに過ぎません。dstatinterruptstop
結果dstat:
----total-cpu-usage---- -dsk/total- -net/total- ---paging-- ---system--
usr sys idl wai hiq siq| read writ| recv send| in out | int csw
0 0 99 0 0 0| 0 0 | 449k 13M| 0 0 | 14k 3985
1 0 99 0 0 0| 0 75k| 450k 13M| 0 0 | 13k 4096
0 0 99 0 0 0| 0 0 | 456k 13M| 0 0 | 14k 4063
0 1 99 0 0 0| 0 4096B| 449k 13M| 0 0 | 14k 4099
1 0 99 0 0 0| 0 41k| 451k 13M| 0 0 | 14k 4090
1 1 99 0 0 0| 0 0 | 431k 13M| 0 0 | 13k 4015
2 3 94 1 0 1| 0 37k| 442k 13M| 0 0 | 14k 4732
0 1 98 0 0 1| 0 0 | 455k 13M| 0 0 | 14k 3937
0 1 99 0 0 0| 0 4096B| 441k 13M| 0 0 | 14k 4061
0 0 99 0 0 0| 0 32k| 452k 13M| 0 0 | 13k 3895
0 0 99 0 0 1| 0 0 | 449k 13M| 0 0 | 14k 4025
0 1 99 0 0 0| 0 75k| 449k 13M| 0 0 | 14k 4087
1 0 99 0 0 0| 0 0 | 459k 13M| 0 0 | 14k 4068
結果top:
top - 01:30:22 up 32 days, 15:55, 4 users, load average: 0.06, 0.04, 0.05
Tasks: 209 total, 1 running, 207 sleeping, 0 stopped, 1 zombie
%Cpu0 : 0.4 us, 0.4 sy, 0.0 ni, 98.4 id, 0.5 wa, 0.0 hi, 0.4 si, 0.0 st
%Cpu1 : 0.5 us, 0.4 sy, 0.0 ni, 98.6 id, 0.0 wa, 0.0 hi, 0.5 si, 0.0 st
%Cpu2 : 0.4 us, 0.5 sy, 0.0 ni, 99.1 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
%Cpu3 : 0.4 us, 0.4 sy, 0.0 ni, 98.3 id, 0.0 wa, 0.0 hi, 0.9 si, 0.0 st
KiB Mem : 8009116 total, 2860992 free, 2376112 used, 2772012 buff/cache
KiB Swap: 8257532 total, 6995792 free, 1261740 used. 5289404 avail Mem
nginx設定：
user root;
worker_processes 4;
events {
worker_connections 10240;
}
http {
include mime.types;
default_type application/octet-stream;
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for" "$request_time"';
access_log logs/access.log main;
sendfile on;
keepalive_timeout 65;
server {
listen 80;
server_name localhost;
location ^~ /static/js {
alias /root/static;
}
}
}
テスト結果ab：
ab -c 50 -n 1000 http://172.16.10.252/static/js/mapcube.js
This is ApacheBench, Version 2.3 <$Revision: 1430300 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/
Benchmarking 172.16.10.252 (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Completed 500 requests
Completed 600 requests
Completed 700 requests
Completed 800 requests
Completed 900 requests
Completed 1000 requests
Finished 1000 requests
Server Software: nginx/1.18.0
Server Hostname: 172.16.10.252
Server Port: 80
Document Path: /static/js/mapcube.js
Document Length: 2067001 bytes
Concurrency Level: 50
Time taken for tests: 177.033 seconds
Complete requests: 1000
Failed requests: 0
Write errors: 0
Total transferred: 2067254000 bytes
HTML transferred: 2067001000 bytes
Requests per second: 5.65 [#/sec] (mean)
Time per request: 8851.632 [ms] (mean)
Time per request: 177.033 [ms] (mean, across all concurrent requests)
Transfer rate: 11403.56 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 0 44 230.9 4 3010
Processing: 3356 8729 2531.8 8484 27916
Waiting: 1 20 96.9 5 1465
Total: 3360 8773 2537.0 8503 27921
Percentage of the requests served within a certain time (ms)
50% 8503
66% 9628
75% 10282
80% 10667
90% 11868
95% 13021
98% 14240
99% 16293
100% 27921 (longest request)
nginxアクセスログ：
172.16.13.163 - - [09/Aug/2021:01:32:32 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "10.531"
172.16.13.163 - - [09/Aug/2021:01:32:32 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "9.056"
172.16.13.163 - - [09/Aug/2021:01:32:32 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "4.995"
172.16.13.163 - - [09/Aug/2021:01:32:32 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "7.615"
172.16.13.163 - - [09/Aug/2021:01:32:33 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "12.134"
172.16.13.163 - - [09/Aug/2021:01:32:33 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "10.562"
172.16.13.163 - - [09/Aug/2021:01:32:33 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "6.037"
172.16.13.163 - - [09/Aug/2021:01:32:33 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "7.596"
172.16.13.163 - - [09/Aug/2021:01:32:34 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "9.360"
172.16.13.163 - - [09/Aug/2021:01:32:34 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "10.697"
172.16.13.163 - - [09/Aug/2021:01:32:33 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "10.562"
172.16.13.163 - - [09/Aug/2021:01:32:33 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "6.037"
172.16.13.163 - - [09/Aug/2021:01:32:33 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "7.596"
172.16.13.163 - - [09/Aug/2021:01:32:34 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "9.360"
172.16.13.163 - - [09/Aug/2021:01:32:34 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "10.697"
172.16.13.163 - - [09/Aug/2021:01:32:34 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "4.924"
172.16.13.163 - - [09/Aug/2021:01:32:34 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "10.588"
172.16.13.163 - - [09/Aug/2021:01:32:34 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "13.913"
172.16.13.163 - - [09/Aug/2021:01:32:34 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "11.859"
172.16.13.163 - - [09/Aug/2021:01:32:35 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "11.748"
172.16.13.163 - - [09/Aug/2021:01:32:35 +0800] "GET /static/js/mapcube.js HTTP/1.0" 200 2067001 "-" "ApacheBench/2.3" "-" "7.987"
172.16.13.163(ab)から172.16.10.252(nginx)へのping:
ping 172.16.10.252
PING 172.16.10.252 (172.16.10.252) 56(84) bytes of data.
64 bytes from 172.16.10.252: icmp_seq=1 ttl=63 time=0.329 ms
64 bytes from 172.16.10.252: icmp_seq=2 ttl=63 time=0.412 ms
64 bytes from 172.16.10.252: icmp_seq=3 ttl=63 time=0.443 ms
64 bytes from 172.16.10.252: icmp_seq=4 ttl=63 time=0.459 ms
64 bytes from 172.16.10.252: icmp_seq=5 ttl=63 time=0.892 ms
64 bytes from 172.16.10.252: icmp_seq=6 ttl=63 time=0.443 ms
172.16.10.252 ネットワークカード:
ethtool ens192 | grep Speed
Speed: 10000Mb/s
nginxについて：
./sbin/nginx -V
nginx version: nginx/1.18.0
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-44) (GCC)
built with OpenSSL 1.0.2k-fips 26 Jan 2017
TLS SNI support enabled
configure arguments: --user=xxx --prefix=/home/xxx/softs/nginx --with-http_stub_status_module --with-http_ssl_module --with-file-aio --with-http_realip_module --add-module=../nginx-http-flv-module
2つの質問があります。
interruptsdstat図のように14k高いですか、それとも正常ですか？あまりにも低いinterruptsようでクラッシュしていると思いますか？top0.0~0.9- nginxがなぜそんなに遅いのですか？パフォーマンスを向上させるにはどうすればよいですか？ボトルネックをどのように見つけることができますか？
PS：ab使い方としてKeep Aliveをhttp/1.0使用しましたが、ad -kうまくいきません。だからsiegeテストに使用するように変更しました。siege -c 50 -r 20 -H "Connection: keep-alive" http://172.16.10.252/static/js/mapcube.jsしかし、tpsはabテストと同じくらい低いです。
包囲結果：
HTTP/1.1 200 5.56 secs: 2067001 bytes ==> GET /static/js/mapcube.js
HTTP/1.1 200 3.13 secs: 2067001 bytes ==> GET /static/js/mapcube.js
HTTP/1.1 200 2.68 secs: 2067001 bytes ==> GET /static/js/mapcube.js
HTTP/1.1 200 1.41 secs: 2067001 bytes ==> GET /static/js/mapcube.js
HTTP/1.1 200 4.71 secs: 2067001 bytes ==> GET /static/js/mapcube.js
HTTP/1.1 200 1.17 secs: 2067001 bytes ==> GET /static/js/mapcube.js
HTTP/1.1 200 1.67 secs: 2067001 bytes ==> GET /static/js/mapcube.js
HTTP/1.1 200 2.51 secs: 2067001 bytes ==> GET /static/js/mapcube.js
HTTP/1.1 200 0.62 secs: 2067001 bytes ==> GET /static/js/mapcube.js
HTTP/1.1 200 1.12 secs: 2067001 bytes ==> GET /static/js/mapcube.js
HTTP/1.1 200 0.21 secs: 2067001 bytes ==> GET /static/js/mapcube.js
HTTP/1.1 200 4.29 secs: 2067001 bytes ==> GET /static/js/mapcube.js
HTTP/1.1 200 0.23 secs: 2067001 bytes ==> GET /static/js/mapcube.js
Transactions: 1000 hits
Availability: 100.00 %
Elapsed time: 178.83 secs
Data transferred: 1971.25 MB
Response time: 8.69 secs
Transaction rate: 5.59 trans/sec
Throughput: 11.02 MB/sec
Concurrency: 48.60
Successful transactions: 1000
Failed transactions: 0
Longest transaction: 36.69
Shortest transaction: 0.21
上記のようにsiege -H "Connection: keep-alive"リクエスト1,000個をテストしてtime_waitすぐに1,000個に増やしたがうまくkeep-aliveいかなかったんです。
netstat -ant | awk '{print $6}' | sort | uniq -c
1 established)
1 ESTABLISHED
1 Foreign
10 LISTEN
1000 TIME_WAIT