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Thread: load average >2, any explanation
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01-23-2014, 03:32 AM #1Web Hosting Master
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load average >2, any explanation
hi
I have a VPS account, and during last 24-48 hours had high downtimes. I checked servers load average and it was high >2
Like this
top - 02:27:29 up 26 min, 2 users, load average: 2.75, 2.22, 1.81
Now, there isn't any active site or server (i don't use named or mail server in this account) - my server's load is still high
top - 02:13:31 up 21 min, 2 users, load average: 2.75, 2.22, 1.81
top - 02:29:53 up 37 min, 2 users, load average: 1.69, 1.66, 1.67
Anyone can explain this? I contact my vps hoster, but don't have any response yet.
P.S. just need to mention, that this start only yesterday, before this 2 months everything was fine.
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01-23-2014, 03:34 AM #2Web Hosting Master
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what is result of top command
Code:top
This will show the process causing high server load.█ YagHost - Fast Reliable Hosting Since 2009
█ Managed VPS - NVMe DirectAdmin
█ Web Hosting - NVMe SSD, AMD EPYC, 10 Gbps (US, Europe, Singapore)
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01-23-2014, 03:38 AM #3Web Hosting Master
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Code:top - 02:36:00 up 43 min, 2 users, load average: 1.75, 1.65, 1.64 Tasks: 59 total, 1 running, 58 sleeping, 0 stopped, 0 zombie Cpu(s): 0.0%us, 0.1%sy, 0.0%ni, 99.6%id, 0.3%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 1048576k total, 418816k used, 629760k free, 0k buffers Swap: 1048576k total, 0k used, 1048576k free, 304784k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 6097 mysql 20 0 135m 19m 5124 S 0.5 1.9 0:00.41 mysqld 1 root 20 0 2176 668 576 S 0.0 0.1 0:00.01 init 2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd/486 3 root 20 0 0 0 0 S 0.0 0.0 0:00.00 khelper/486 449 root 20 0 1832 584 488 D 0.0 0.1 0:01.90 syslogd 883 root 20 0 11964 9560 1360 S 0.0 0.9 0:00.40 lfd 901 root 20 0 7328 1056 640 S 0.0 0.1 0:00.00 sshd 909 root 20 0 2852 908 728 S 0.0 0.1 0:00.00 xinetd 1028 root 20 0 2572 1132 996 S 0.0 0.1 0:00.00 sh 1036 root 20 0 26516 14m 4164 S 0.0 1.4 0:00.21 php 1054 root 20 0 6008 1748 768 S 0.0 0.2 0:00.13 kloxo.httpd 1093 qmails 20 0 2456 1000 392 S 0.0 0.1 0:02.43 qmail-send 1096 qmaill 20 0 1772 496 424 S 0.0 0.0 0:00.43 splogger 1097 root 20 0 1784 380 300 S 0.0 0.0 0:00.13 qmail-lspawn 1098 qmailr 20 0 1780 384 300 S 0.0 0.0 0:00.13 qmail-rspawn 1099 qmailq 20 0 1764 368 300 S 0.0 0.0 0:00.25 qmail-clean 1115 root 20 0 6964 1476 1100 S 0.0 0.1 0:00.00 authdaemond 1117 root 20 0 1796 384 324 S 0.0 0.0 0:00.00 tcpserver 1120 root 20 0 1796 380 320 S 0.0 0.0 0:00.00 tcpserver 1125 root 20 0 1796 384 324 S 0.0 0.0 0:00.00 tcpserver 1128 root 20 0 1796 380 320 S 0.0 0.0 0:00.00 tcpserver
service mysqld stop
Stopping MySQL: [ OK ]
[root@server ~]# top
Code:top - 02:37:58 up 45 min, 2 users, load average: 1.53, 1.62, 1.63 Tasks: 59 total, 1 running, 57 sleeping, 1 stopped, 0 zombie Cpu(s): 0.0%us, 0.2%sy, 0.0%ni, 99.6%id, 0.2%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 1048576k total, 405088k used, 643488k free, 0k buffers Swap: 1048576k total, 0k used, 1048576k free, 305500k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1 root 20 0 2176 668 576 S 0.0 0.1 0:00.01 init 2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd/486 3 root 20 0 0 0 0 S 0.0 0.0 0:00.00 khelper/486 449 root 20 0 1832 584 488 D 0.0 0.1 0:02.02 syslogd 883 root 20 0 11964 9560 1360 S 0.0 0.9 0:00.42 lfd 901 root 20 0 7328 1056 640 S 0.0 0.1 0:00.00 sshd 909 root 20 0 2852 908 728 S 0.0 0.1 0:00.00 xinetd 1028 root 20 0 2572 1132 996 S 0.0 0.1 0:00.00 sh 1036 root 20 0 26516 14m 4164 S 0.0 1.4 0:00.21 php 1054 root 20 0 6008 1748 768 S 0.0 0.2 0:00.13 kloxo.httpd 1093 qmails 20 0 2456 1000 392 S 0.0 0.1 0:02.49 qmail-send 1096 qmaill 20 0 1772 496 424 S 0.0 0.0 0:00.47 splogger 1097 root 20 0 1784 380 300 S 0.0 0.0 0:00.15 qmail-lspawn 1098 qmailr 20 0 1780 384 300 S 0.0 0.0 0:00.14 qmail-rspawn 1099 qmailq 20 0 1764 368 300 S 0.0 0.0 0:00.27 qmail-clean 1115 root 20 0 6964 1476 1100 S 0.0 0.1 0:00.00 authdaemond 1117 root 20 0 1796 384 324 S 0.0 0.0 0:00.00 tcpserver 1120 root 20 0 1796 380 320 S 0.0 0.0 0:00.00 tcpserver 1125 root 20 0 1796 384 324 S 0.0 0.0 0:00.00 tcpserver 1128 root 20 0 1796 380 320 S 0.0 0.0 0:00.00 tcpserver 1141 root 20 0 6964 508 132 S 0.0 0.0 0:00.00 authdaemond
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01-23-2014, 03:44 AM #4Web Hosting Master
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top and press Shift + P
Code:top - 02:44:36 up 52 min, 2 users, load average: 1.72, 1.79, 1.71 Tasks: 97 total, 1 running, 93 sleeping, 3 stopped, 0 zombie Cpu(s): 0.2%us, 0.2%sy, 0.0%ni, 99.3%id, 0.3%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 1048576k total, 433220k used, 615356k free, 0k buffers Swap: 1048576k total, 0k used, 1048576k free, 308852k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1036 root 20 0 26516 14m 4164 S 0.3 1.4 0:00.23 php 9420 root 20 0 2416 1084 832 R 0.3 0.1 0:00.03 top 1 root 20 0 2176 668 576 S 0.0 0.1 0:00.02 init 2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd/486 3 root 20 0 0 0 0 S 0.0 0.0 0:00.00 khelper/486 449 root 20 0 1832 584 488 D 0.0 0.1 0:02.38 syslogd 883 root 20 0 11964 9560 1360 S 0.0 0.9 0:00.48 lfd 901 root 20 0 7328 1056 640 S 0.0 0.1 0:00.00 sshd 909 root 20 0 2852 908 728 S 0.0 0.1 0:00.00 xinetd 1028 root 20 0 2572 1132 996 S 0.0 0.1 0:00.00 sh 1054 root 20 0 6008 1748 768 S 0.0 0.2 0:00.13 kloxo.httpd 1096 qmaill 20 0 1772 496 424 S 0.0 0.0 0:00.56 splogger 1098 qmailr 20 0 1780 388 304 S 0.0 0.0 0:00.16 qmail-rspawn 1115 root 20 0 6964 1476 1100 S 0.0 0.1 0:00.00 authdaemond 1117 root 20 0 1796 384 324 S 0.0 0.0 0:00.00 tcpserver 1120 root 20 0 1796 380 320 S 0.0 0.0 0:00.00 tcpserver 1125 root 20 0 1796 384 324 S 0.0 0.0 0:00.00 tcpserver 1128 root 20 0 1796 380 320 S 0.0 0.0 0:00.00 tcpserver 1141 root 20 0 6964 508 132 S 0.0 0.0 0:00.00 authdaemond 1150 root 20 0 3348 1104 572 S 0.0 0.1 0:00.00 crond 1174 xfs 20 0 3276 960 740 S 0.0 0.1 0:00.00 xfs
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01-23-2014, 03:56 AM #5Retired Moderator
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Usually what you're describing happens because the node's disk i/o is overloaded, which can be caused by an abusive user on another VPS or just by the provider putting too many users on inadequate hardware.
Try "vmstat 2" and watch the results for a while. Typically the interesting information is in the "wa" column (i/o wait for the shared filesystem) and "bi", "bo" (blocks in out) corresponding to your i/o usage.Chris
"Some problems are so complex that you have to be highly intelligent and well informed just to be undecided about them." - Laurence J. Peter
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01-23-2014, 04:01 AM #6Web Hosting Master
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Code:procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------ r b swpd free buff cache si so bi bo in cs us sy id wa st 0 0 53216 4092 0 992008 0 0 86 0 0 142 0 0 99 0 0 0 0 53708 4248 0 992328 2 248 406 0 0 263 0 0 99 1 0 0 0 55468 8808 0 989480 0 880 266 0 0 222 0 1 98 1 0 0 0 55468 5968 0 992316 0 0 704 16 0 279 0 0 98 2 0 0 0 55468 5072 0 993128 0 0 228 0 0 158 0 0 99 1 0 0 0 55852 4532 0 994004 0 192 424 2 0 222 0 0 99 1 0 0 1 56108 4392 0 994456 0 128 258 14 0 203 0 0 99 1 0 0 0 56748 4424 0 995124 0 320 446 0 0 232 0 0 99 1 0 0 1 57768 3804 0 996676 0 510 924 0 0 197 0 0 98 2 0 0 0 58536 3784 0 997508 0 384 580 0 0 252 0 0 98 1 0 0 0 58928 3456 0 997828 58 256 352 0 0 251 0 0 99 1 0 0 0 59440 3440 0 998304 0 256 378 6942 0 213 0 0 99 1 0 0 0 59900 3488 0 998792 0 230 374 0 0 241 0 0 99 1 0 0 0 60356 3500 0 999096 28 256 348 0 0 204 0 0 98 2 0 0 1 61252 3480 0 1000020 0 448 702 2 0 125 0 0 96 3 0 0 1 62020 3144 0 1000972 0 384 638 0 0 225 0 0 97 3 0 0 0 62404 3380 0 1001180 0 192 230 2 0 194 0 0 98 2 0 0 0 62624 20512 0 984684 40 150 184 6 0 194 0 0 97 2 0 0 0 62612 19176 0 986420 6 0 442 0 0 428 0 0 99 1 0 0 0 62612 18512 0 987052 0 0 168 10 0 170 0 0 99 1 0 0 0 62612 18200 0 987336 0 0 80 0 0 278 0 0 99 1 0 0 0 62612 17900 0 987636 0 0 70 0 0 299 0 0 98 1 0 0 1 62608 17752 0 987808 2 0 34 0 0 325 0 0 99 1 0 0 0 62608 53784 0 951800 0 0 22 0 0 114 0 0 99 1 0 0 1 53788 31176 0 952036 4410 0 36 48 0 2784 14 1 85 1 0 procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------ r b swpd free buff cache si so bi bo in cs us sy id wa st 0 0 53788 31488 0 952052 0 0 8 0 0 90 0 0 99 0 0 0 1 52784 43196 0 952520 502 0 124 8 0 393 1 0 99 1 0 0 0 52784 42444 0 953256 0 0 186 4 0 145 0 0 99 0 0 0 0 52784 42176 0 953472 0 0 72 3652 0 201 0 0 98 2 0 0 0 52784 41196 0 954484 0 0 254 224 0 222 0 0 99 1 0 0 1 52784 39240 0 956400 0 0 484 0 0 318 0 0 99 1 0 0 0 52692 38024 0 957360 46 0 238 2 0 257 0 0 99 1 0 0 0 52572 37028 0 958232 60 0 218 0 0 230 1 1 98 1 0 0 0 52572 35848 0 959452 0 0 298 0 0 227 0 0 99 1 0 0 0 52572 35212 0 960048 0 0 160 0 0 157 0 0 99 1 0 0 0 52572 34916 0 960328 0 0 76 0 0 190 0 0 99 0 0 0 0 52568 33192 0 962068 2 0 422 4 0 294 0 0 99 1 0 0 0 52568 32516 0 962728 0 0 170 0 0 171 0 0 99 1 0 0 0 52568 30336 0 963728 0 0 256 0 0 153 0 0 99 1 0 0 0 52568 29380 0 964136 0 0 104 6 0 192 0 0 99 1 0
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01-23-2014, 04:34 AM #7Retired Moderator
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Looks like your VPS isn't as idle as you think. There's a fair amount of activity showing on bo / bi (your i/o usage), and although the i/o wait does rise to 3% at one point, that's also at the peak of your usage (so not something you could blame on the provider).
I don't see anything in the top listings to account for it but perhaps others will, or can suggest other tests. Maybe try shutting down all services and then ps aux.Chris
"Some problems are so complex that you have to be highly intelligent and well informed just to be undecided about them." - Laurence J. Peter
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01-23-2014, 05:17 AM #8Web Hosting Master
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After 2 hours of inactivity (suspended all sites, accounts, applications and programs) - even i disable Kloxo Panel, and firewall ( csf v6.40)
top - 04:13:13 up 2:20, 3 users, load average: 2.68, 2.33, 1.85
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