Suddenly my server is responding too slow. any website from the server is taking too much time to load. to check any issue with the server I checked for certain issues, which might help in suggesting a solution. server-load is ok. like 0.25 ping response from server is also fine. I also did a server benchmark and the results are like this: root@server2:/# sysbench --test=cpu --cpu-max-prime=20000 run sysbench 0.4.12: multi-threaded system evaluation benchmark Running the test with following options: Number of threads: 1 Doing CPU performance benchmark Threads started! Done. Maximum prime number checked in CPU test: 20000 Test execution summary: total time: 34.1539s total number of events: 10000 total time taken by event execution: 34.1526 per-request statistics: min: 3.41ms avg: 3.42ms max: 4.61ms approx. 95 percentile: 3.42ms Threads fairness: events (avg/stddev): 10000.0000/0.00 execution time (avg/stddev): 34.1526/0.00 root@server2:/# sysbench --test=fileio --file-total-size=150G --file-test-mode=rndrw --init-rng=on --max-time=300 --max-requests=0 run sysbench 0.4.12: multi-threaded system evaluation benchmark Running the test with following options: Number of threads: 1 Initializing random number generator from timer. Extra file open flags: 0 128 files, 1.1719Gb each 150Gb total file size Block size 16Kb Number of random requests for random IO: 0 Read/Write ratio for combined random IO test: 1.50 Periodic FSYNC enabled, calling fsync() each 100 requests. Calling fsync() at the end of test, Enabled. Using synchronous I/O mode Doing random r/w test Threads started! Time limit exceeded, exiting... Done. Operations performed: 9058 Read, 6038 Write, 19200 Other = 34296 Total Read 141.53Mb Written 94.344Mb Total transferred 235.88Mb (805.09Kb/sec) 50.32 Requests/sec executed Test execution summary: total time: 300.0116s total number of events: 15096 total time taken by event execution: 184.7932 per-request statistics: min: 0.01ms avg: 12.24ms max: 701.53ms approx. 95 percentile: 39.78ms Threads fairness: events (avg/stddev): 15096.0000/0.00 execution time (avg/stddev): 184.7932/0.00 root@server2:/# sysbench --test=oltp --oltp-table-size=1000000 --db-driver=mysql --mysql-db=test --mysql-user=root --mysql-password=password --max-time=60 --oltp-read-only=on --max-requests=0 --num-threads=8 run sysbench 0.4.12: multi-threaded system evaluation benchmark Running the test with following options: Number of threads: 8 Doing OLTP test. Running mixed OLTP test Doing read-only test Using Special distribution (12 iterations, 1 pct of values are returned in 75 pct cases) Using "BEGIN" for starting transactions Using auto_inc on the id column Threads started! Time limit exceeded, exiting... (last message repeated 7 times) Done. OLTP test statistics: queries performed: read: 1148700 write: 0 other: 164100 total: 1312800 transactions: 82050 (1367.38 per sec.) deadlocks: 0 (0.00 per sec.) read/write requests: 1148700 (19143.32 per sec.) other operations: 164100 (2734.76 per sec.) Test execution summary: total time: 60.0053s total number of events: 82050 total time taken by event execution: 479.5003 per-request statistics: min: 1.67ms avg: 5.84ms max: 193.21ms approx. 95 percentile: 8.28ms Threads fairness: events (avg/stddev): 10256.2500/79.58 execution time (avg/stddev): 59.9375/0.00 I have done a test for a webpage at webpagetest.org the result is like this: Code: Request Details Before Start Render Before On Load After On Load Request Details # Resource Content Type Request Start DNS Lookup Initial Connection Time to First Byte Content Download Bytes Downloaded Error/Status Code IP 1 http://skretail.in/ text/html 3.091 s 25 ms 3060 ms 86932 ms 7 ms 2.2 KB 200 69.197.135.186 2 http://skretail.in/s...yle_sheet/style1.css text/css 90.046 s - - 59 ms 3 ms 2.2 KB 200 69.197.135.186 3 http://skretail.in/i...es/logo-skretail.jpg image/jpeg 90.116 s - - 59 ms 81 ms 27.3 KB 200 69.197.135.186 4 http://skretail.in/images/logo1.jpg - 90.13 s - 55 ms - -90130 ms - -1 - 5 http://skretail.in/images/bullot.gif image/gif 90.258 s - - 58 ms - 0.3 KB 200 69.197.135.186 6 http://skretail.in/images/body.jpg image/jpeg 90.317 s - - 69 ms 76 ms 51.1 KB 200 69.197.135.186 7 http://skretail.in/images/shadow.png image/png 90.463 s - - 58 ms 1 ms 0.4 KB 200 69.197.135.186 8 http://skretail.in/i...ges/work_zone_bg.gif image/gif 90.523 s - - 59 ms - 0.6 KB 200 69.197.135.186 9 http://skretail.in/images/border.gif image/gif 90.584 s - - 58 ms 1 ms 0.3 KB 200 69.197.135.186 10 http://skretail.in/images/box_bg.gif image/gif 90.644 s - - 59 ms 1 ms 0.9 KB 200 69.197.135.186 11 http://skretail.in/images/menu_bg.gif image/gif 90.704 s - - 58 ms 1 ms 0.5 KB 200 69.197.135.186 12 http://skretail.in/i...ages/menu_border.gif image/gif 90.765 s - - 58 ms 1 ms 0.6 KB 200 69.197.135.186 13 http://skretail.in/i...ages/header_box1.png image/png 90.826 s - - 59 ms 1 ms 1.0 KB 200 69.197.135.186 14 http://skretail.in/images/menu_path.gif image/gif 90.888 s - - 58 ms 1 ms 0.3 KB 200 69.197.135.186 15 http://skretail.in/images/pic3.jpg image/jpeg 90.948 s - - 61 ms 1 ms 2.2 KB 200 69.197.135.186 16 http://skretail.in/i...premier-agencies.jpg image/jpeg 91.011 s - - 62 ms 27 ms 18.8 KB 200 69.197.135.186 17 http://skretail.in/i...ges/logo-sktyres.png image/png 91.103 s - - 67 ms 3 ms 7.6 KB 200 69.197.135.186 18 http://skretail.in/images/pic1.png image/png 91.175 s - - 67 ms 25 ms 20.6 KB 200 69.197.135.186 19 http://skretail.in/images/pic2.png - 91.175 s - 1057 ms - -91175 ms - -1 - 20 http://skretail.in/images/read.gif - 91.21 s - 1090 ms -1 ms - - -1 69.197.135.186 21 http://skretail.in/images/footer_bg.gif - 91.21 s - 1090 ms -1 ms - - -1 69.197.135.186 clearly the result show the problem in connectivity. but am not able find the source of the issue. I also done a speedtest-cli the result of which is like below: speedtest-cli 100%[===================>] 59.98K --.-KB/s in 0.04s 2018-06-11 17:01:48 (1.32 MB/s) - 'speedtest-cli' saved [61423/61423] root@server2:/home/pawan# chmod +x speedtest-cli root@server2:/home/pawan# ./speedtest-cli --server 13628 Retrieving speedtest.net configuration... Testing from WholeSale Internet (69.197.135.186)... Retrieving speedtest.net server list... Retrieving information for the selected server... Hosted by Nocix (Kansas City, MO) [1.32 km]: 2.261 ms Testing download speed......................... ....................................................... Download: 926.30 Mbit/s Testing upload speed................................................................................................ Upload: 833.40 Mbit/s root@server2:/home/pawan# Where else I should look or do to fix the issue. Thanks.
Start apache. Or restart it. Or nginx if you webserver is not apache. If the ISPConfig Monitor shows any other service is down, start that also. Maybe try rebooting the server? Those benchmarks are not helpful here. Unless you moved to a slower host and want to compare measurements to the old host. Try command "top", see what it show for CPU wa state.
Plus you might check if the nameservers in /etc/resolv.conf are reachable and responsive from your server and you might install and use the tool iotop to check io load beside using the top command that @Taleman suggested already.
run the top command - cpu wa state shows load like 1.0, 0.6 etc. already rebooted the server twice, but no luck, still facing the same issue. when checking apache status on command line, it shows fine. for iotop: the result is like this: Total DISK READ : 0.00 B/s | Total DISK WRITE : 0.00 B/s Actual DISK READ: 0.00 B/s | Actual DISK WRITE: 0.00 B/s TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND 15627 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.01 % [kworker/u50:1] 2048 be/4 web201 0.00 B/s 0.00 B/s 0.00 % 0.00 % php-fpm: pool web201 1 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % init splash 2 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kthreadd] 3 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [ksoftirqd/0] 2052 be/4 web204 0.00 B/s 0.00 B/s 0.00 % 0.00 % php-fpm: pool web204 5 be/0 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/0:0H] 6 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/u48:0] 7 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/u49:0] 8 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcu_sched] 9 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [rcu_bh] 10 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [migration/0] 11 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [watchdog/0] 12 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [watchdog/1] 13 rt/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [migration/1] 14 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.00 % [ksoftirqd/1] 2063 be/4 web23 0.00 B/s 0.00 B/s 0.00 % 0.00 % php-fpm: pool web23 as regarding etc/resolve.conf the contents of the file is like this: Code: # Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8) # DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN nameserver 192.187.107.16 nameserver 69.30.209.16 nameserver 8.8.8.8 check - nameservers in /etc/resolv.conf are reachable how do I check this?
Is this a virtual server or a real iron host? If virtual, what is the load on the host server? Is the network overloaded? Can you check how much traffic there is in the switch or subnet? What does command Code: free -h show about memory and swap usage? Install dstat, and check with it's various options what is slowing the host down.
HI Till - [email protected] google.com looks fine. result is like this: ; <<>> DiG 9.10.3-P4-Ubuntu <<>> @8.8.8.8 google.com ; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 49961 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 512 ;; QUESTION SECTION: ;google.com. IN A ;; ANSWER SECTION: google.com. 110 IN A 172.217.9.14 dig 192.187.107.16 ; <<>> DiG 9.10.3-P4-Ubuntu <<>> 192.187.107.16 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21842 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;192.187.107.16. IN A ;; ANSWER SECTION: 192.187.107.16. 86400 IN A 0.0.0.0 ;; Query time: 0 msec ;; SERVER: 192.187.107.16#53(192.187.107.16) ;; WHEN: Mon Jun 11 21:03:40 IST 2018 ;; MSG SIZE rcvd: 48 root@server2:/var/log/mysql# free -h root@server2:/var/log/mysql# free -h total used free shared buff/cache available Mem: 15G 1.5G 13G 54M 990M 13G Swap: 23G 0B 23G
Hi Till - I think somewhere something is messed up, don't know how, but as I stated earlier as well that ISPCONFIG MONITOR - showing APACHE server as offline. but in the terminal when I run the command it is showing as online.
The ispconfig monitor tests port 80 on localhost (127.0.0.1). Maybe you altered the hosts file that localhost is not IP 127.0.0.1 anymore or ypou reconfigured apache to not listen on localhost or not listen on port 80.
No Till I didn't altered anything. but now everything is working fine and fast now. besides as you told that I might have altered hosts file, then it shouldn't have worked now on its own. so I don't know what had happened. I even contacted server support, but they told that there is no issue it there end.
