Plesk 11.x / Linux :: High CPU Wait I/O And Load Average During Backup
May 20, 2014
PRODUCT, VERSION, OPERATING SYSTEM, ARCHITECTURE
Parallels Plesk Panel 11.5.30 MU #44 CentOS 6.5 (Final) 64bit
2 of our our servers are suddenly experiencing high Wait I/O Times, and high Load Averages during the backup process. During this period the Plesk grinds to a halt, sometimes crashing out completely (although SSh is still possible. We have been in talks with our server suppliers (assuming this would be node related) however they have done a lot of testing etc. and categorically state the node is fine , with no other users affecting it.
STEPS TO REPRODUCE : We backup the server using the scheduled backup service and Wait I/O immediately goes up.
ACTUAL RESULT: Plesk downtime / Website downtime
EXPECTED RESULT: No downtime, successful back up
Some other info :
All other processes (MYSQL, apache, Nginx etc) are all running between 1 - 10%
Partition "/usr" utilization 4.2% used (1.81 GB of 43.3 GB) (?)
Partition "/var" utilization 50.6% used (61.8 GB of 122 GB) (?)
We are struggling to identify what has changed on the server that would cause this sudden change.
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Oct 22, 2009
I have to move about 50 GB each night from one server to another.
This is the command I'm using:
Code:
/bin/nice -n +19 scp -c blowfish -l 18000 -P 22222 root@XX.XX.XX.XX:/backup/dailybacks/*.tar.gz ./
There is no private lan so i have to use internet. I'm using blowfish, which will reduce cpu load, and also limiting bandwidth transfer, usign -l 18000. How ever, I still do see some high load averages..
Do you have any other suggestion to optimize CPU performance while running scp?
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Jun 20, 2009
Why my server - load average is high?
below is output of top:
top - 13:52:53 up 29 days, 5:39, 3 users, load average: 72.05, 68.90, 67.89
Tasks: 857 total, 2 running, 833 sleeping, 20 stopped, 2 zombie
Cpu(s): 4.2%us, 2.5%sy, 0.0%ni, 26.4%id, 63.6%wa, 0.5%hi, 2.8%si, 0.0%st
Mem: 8181908k total, 8135188k used, 46720k free, 35104k buffers
Swap: 4192956k total, 26624k used, 4166332k free, 7321172k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
337 mysql 15 0 327m 56m 4252 S 4.0 0.7 74:18.53 mysqld
24732 root 15 0 13380 1760 808 R 1.0 0.0 0:10.44 top
313 root 10 -5 0 0 0 S 0.3 0.0 90:25.28 kswapd0
22040 nobody 15 0 63148 3272 1572 S 0.3 0.0 0:00.30 httpd
22136 nobody 15 0 63148 3260 1572 S 0.3 0.0 0:00.21 httpd
22291 nobody 15 0 63148 3280 1580 S 0.3 0.0 0:00.18 httpd
22327 nobody 16 0 63148 3280 1580 D 0.3 0.0 0:00.20 httpd
22406 nobody 15 0 63148 3276 1580 S 0.3 0.0 0:00.18 httpd
22522 nobody 16 0 63148 3268 1580 S 0.3 0.0 0:00.10 httpd
23553 nobody 16 0 63148 3244 1556 S 0.3 0.0 0:00.09 httpd
23556 nobody 15 0 63148 3256 1568 S 0.3 0.0 0:00.09 httpd
26260 nobody 16 0 63148 3296 1608 S 0.3 0.0 0:00.13 httpd
26618 nobody 16 0 63148 3244 1556 S 0.3 0.0 0:00.13 httpd
28849 nobody 16 0 63148 3240 1556 S 0.3 0.0 0:00.04 httpd
28903 nobody 15 0 63148 3208 1532 S 0.3 0.0 0:00.02 httpd
29533 nobody 15 0 0 0 0 Z 0.3 0.0 0:00.02 httpd <defunct>
29558 nobody 15 0 63148 3236 1548 S 0.3 0.0 0:00.01 httpd
29587 nobody 15 0 63148 3216 1536 S 0.3 0.0 0:00.01 httpd
29592 nobody 15 0 63148 3208 1532 S 0.3 0.0 0:00.02 httpd
1 root 15 0 10344 576 544 S 0.0 0.0 0:05.36 init
2 root RT -5 0 0 0 S 0.0 0.0 3:58.90 migration/0
3 root 34 19 0 0 0 S 0.0 0.0 6:15.52 ksoftirqd/0
4 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/0
5 root RT -5 0 0 0 S 0.0 0.0 0:12.33 migration/1
6 root 34 19 0 0 0 S 0.0 0.0 0:30.07 ksoftirqd/1
7 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/1
8 root RT -5 0 0 0 S 0.0 0.0 0:02.57 migration/2
9 root 34 19 0 0 0 S 0.0 0.0 0:02.84 ksoftirqd/2
10 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/2
11 root RT -5 0 0 0 S 0.0 0.0 0:11.61 migration/3
12 root 34 19 0 0 0 S 0.0 0.0 0:01.12 ksoftirqd/3
13 root RT -5 0 0 0 S 0.0 0.0 0:00.00 watchdog/3
14 root 10 -5 0 0 0 S 0.0 0.0 0:00.22 events/0
15 root 10 -5 0 0 0 S 0.0 0.0 0:00.10 events/1
16 root 10 -5 0 0 0 S 0.0 0.0 0:00.16 events/2
17 root 10 -5 0 0 0 S 0.0 0.0 0:00.09 events/3
18 root 10 -5 0 0 0 S 0.0 0.0 0:00.00 khelper
87 root 10 -5 0 0 0 S 0.0 0.0 0:00.03 kthread
94 root 10 -5 0 0 0 S 0.0 0.0 0:00.78
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Apr 19, 2007
What would you call a high load average? What is the top number?
Does this look unhealthy?....
1:48PM up 562 days, 18:14, 4 users, load averages: 11.15, 9.11, 6.48
2:14PM up 562 days, 18:39, 4 users, load averages: 0.85, 2.38, 3.94
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Dec 5, 2007
I have a new Quad core server which has a high load average. Only hosting about 200 sites on it and they are not database sites. Only a few MySQL sites.
Here is the output from top:
top - 15:12:06 up 13 days, 16:38, 1 user, load average: 14.66, 14.21, 12.81
Tasks: 247 total, 4 running, 241 sleeping, 0 stopped, 2 zombie
Cpu(s): 7.9%us, 6.6%sy, 0.0%ni, 79.6%id, 5.9%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 3369172k total, 3244620k used, 124552k free, 6296k buffers
Swap: 2096472k total, 5180k used, 2091292k free, 2499476k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
29439 apache 18 0 148m 101m 4516 D 13 3.1 19:57.79 httpd
29444 apache 18 0 146m 98m 3668 R 12 3.0 11:15.56 httpd
1883 apache 18 0 147m 99m 3584 D 11 3.0 6:08.36 httpd
30263 apache 18 0 146m 99m 4116 D 11 3.0 14:58.88 httpd
1881 apache 18 0 147m 99m 3656 D 10 3.0 2:43.73 httpd
1884 apache 18 0 147m 99m 3632 D 10 3.0 4:15.96 httpd
4768 apache 18 0 149m 102m 4312 R 10 3.1 0:39.93 httpd
29443 apache 18 0 146m 98m 3620 D 10 3.0 24:53.11 httpd
30209 apache 18 0 147m 100m 4228 D 8 3.1 8:25.29 httpd
2230 apache 17 0 154m 108m 5048 D 8 3.3 0:02.94 httpd
1886 apache 18 0 147m 100m 3984 R 7 3.0 1:27.71 httpd
1882 apache 15 0 153m 106m 5328 S 3 3.3 0:01.68 httpd
8795 root 15 0 0 0 0 D 1 0.0 0:00.08 pdflush
273 root 10 -5 0 0 0 S 1 0.0 0:39.82 kswapd0
1984 root 10 -5 0 0 0 D 0 0.0 2:09.22 kjournald
5113 mysql 15 0 135m 33m 5460 S 0 1.0 15:55.22 mysqld
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Nov 6, 2009
i`m using csf + lfd on the server ( CentOS / Cpanel )
i have received the notification from my root user regarding the "High 5 minute load average "
i have just checked my apache but couldn`t find any problem , everything is normal , But what`s the notification for ?
Note : The email included 3 files ( Apache status files )
Time: Sat Nov 7 00:34:48 2009 +0330
1 Min Load Avg: 8.28
5 Min Load Avg: 8.26
15 Min Load Avg: 8.26
Running/Total Processes: 11/171
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Mar 21, 2008
I use CSF on a VPS with 512 RAM and 1024 Busrt and the other day I received the below notification. My hostsaid it was Mailman and since I don't use mailing lists the recommendationwas to disable it. So I did. I'm curious tho as to why this happened in the first place.
Time: Wed Mar 19 17:53:33 2008
1 Min Load Avg: 11.41
5 Min Load Avg: 6.37
15 Min Load Avg: 2.70
Running/Total Processes: 12/94 ...............
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Dec 10, 2014
Today, without any change on the server side my single running website on my server started running low. After checking the running processes I realised I have these 8 processes running with high cpu load something that didn't had before.
4245 user 20 0 283m 103m 10m R 85.1 0.3 6:44.88 /usr/bin/php-cgi -c /var/www/vhosts/system/domain/etc/php.ini
4243 user 20 0 241m 68m 8736 R 83.8 0.2 6:33.45 /usr/bin/php-cgi -c /var/www/vhosts/system/domain/etc/php.ini
4259 user 20 0 254m 82m 8720 R 83.5 0.3 6:11.00 /usr/bin/php-cgi -c /var/www/vhosts/system/domain/etc/php.ini
4244 user 20 0 282m 103m 10m R 82.1 0.3 6:46.49 /usr/bin/php-cgi -c /var/www/vhosts/system/domain/etc/php.ini
4247 user 20 0 248m 76m 8712 R 78.8 0.2 6:50.31 /usr/bin/php-cgi -c /var/www/vhosts/system/domain/etc/php.ini
4264 user 20 0 258m 85m 8712 R 72.9 0.3 6:49.83 /usr/bin/php-cgi -c /var/www/vhosts/system/domain/etc/php.ini
apache error log doesn't show any warnings, errors.
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May 12, 2014
I have been trying to identify why mi server has high load cpu, suddenly CPU load suddenly jumps, from 1 to 40 and until 110
If I restart mysqld and apache, the cpu gets back to normal, until this happen again
My server is
GenuineIntel, Intel(R)Core(TM) i5-2400 CPU @ 3.10GHz
VersionParallels Plesk Panel v11.0.9_build110120608.16 os_CentOS 6
CentOS 6.4 (Final)
CentOS 6 x64 Processor: Intel Core i5 - 3.10 GH
I already installed FAIL2BAN and DDOS DEFLATE without lock. I have CloudFlare Enabled.
When there is a high CPU load, I have checked netstats, and I don't identify many ips connected, so I think it could be an internet script (or virus).
I will paste the result of
ps fax
command, in a moment of high cpu load
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Jul 31, 2007
My VPS had some high %wa this two days,when i refresh(F5) WHM %wa will go to 18-20% and us sy just 1 or 2
Is it my vps provider have a very bad oversell?
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Aug 21, 2007
I/O Wait is increasing on my server, please advise what to do: some times it is within 30 % and sometime it is up to 90%
top - 04:40:44 up 5:30, 2 users, load average: 4.57, 2.64, 3.24
Tasks: 171 total, 2 running, 169 sleeping, 0 stopped, 0 zombie
Cpu(s): 18.3% us, 4.3% sy, 0.0% ni, 0.0% id, 77.0% wa, 0.3% hi, 0.0% si
Mem: 1027556k total, 1021944k used, 5612k free, 85460k buffers
Swap: 2040244k total, 2068k used, 2038176k free, 147752k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
16754 apache 15 0 96140 58m 5948 S 8.3 5.8 0:04.95 httpd
19760 psaadm 15 0 36936 3628 1548 S 4.7 0.4 0:00.14 httpsd
5417 apache 15 0 103m 67m 5984 S 2.0 6.7 0:13.00 httpd
2738 mysql 15 0 394m 79m 4660 S 0.7 7.9 1:25.08 mysqld
28294 apache 15 0 104m 68m 6076 S 0.7 6.9 0:25.33 httpd
39 root 16 0 0 0 0 S 0.3 0.0 0:06.16 kswapd0
2857 root 16 0 4788 752 628 S 0.3 0.1 0:03.09 couriertcpd
3022 qmails 15 0 2304 484 372 S 0.3 0.0 0:09.28 qmail-send
32688 apache 15 0 96112 58m 6000 S 0.3 5.8 0:10.76 httpd
5632 popuser 15 0 35588 29m 2344 D 0.3 2.9 0:30.44 spamd
9850 apache 16 0 100m 65m 5996 S 0.3 6.5 0:09.85 httpd
12418 apache 16 0 99796 62m 6296 S 0.3 6.2 0:08.56 httpd
19578 qmaild 15 0 4008 840 692 S 0.3 0.1 0:00.01 qmail-smtpd
1 root 16 0 1652 552 472 S 0.0 0.1 0:00.70 init
2 root 34 19 0 0 0 S 0.0 0.0 0:00.29 ksoftirqd/0
3 root 5 -10 0 0 0 S 0.0 0.0 0:00.00 events/0
4 root 11 -10 0 0 0 S 0.0 0.0 0:00.00 khelper
5 root 15 -10 0 0 0 S 0.0 0.0 0:00.00 kacpid
19 root 5 -10 0 0 0 S 0.0 0.0 0:00.00 kblockd/0
37 root 20 0 0 0 0 S 0.0 0.0 0:00.00 pdflush
38 root 15 0 0 0 0 S 0.0 0.0 0:01.07 pdflush
40 root 11 -10 0 0 0 S 0.0 0.0 0:00.00 aio/0
20 root 15 0 0 0 0 S 0.0 0.0 0:00.00 khubd
186 root 25 0 0 0 0 S 0.0 0.0 0:00.00 kseriod
295 root 15 0 0 0 0 D 0.0 0.0 0:06.68 kjournald
1373 root 6 -10 1904 456 380 S 0.0 0.0 0:00.01 udevd
1606 root 6 -10 0 0 0 S 0.0 0.0 0:00.00 kauditd
1648 root 6 -10 0 0 0 S 0.0 0.0 0:00.00 kmirrord
1672 root 19 0 0 0 0 S 0.0 0.0 0:00.00 kjournald
1673 root 19 0 0 0 0 S 0.0 0.0 0:00.00 kjournald
2360 root 15 0 2160 552 456 S 0.0 0.1 0:07.27 syslogd
2364 root 16 0 2620 384 316 S 0.0 0.0 0:00.00 klogd
2391 rpc 15 0 1952 548 452 S 0.0 0.1 0:00.00 portmap
2410 rpcuser 18 0 2400 724 620 S 0.0 0.1 0:00.00 rpc.statd
2436 root 16 0 4628 340 172 S 0.0 0.0 0:00.00 rpc.idmapd
2507 root 17 0 3060 508 300 S 0.0 0.0 0:00.00 smartd
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Feb 11, 2008
For the past couple of days, I've noticed that there is alot of apache processes running in the "D" state and that my IO wait is up to %80. I straced one of the processes and the result is its locking on a php session:
$ strace -p 3230
06:57:12 open("/var/lib/php/session/sess_86ecf346c6f7adba93cb1077f6b95d43", O_RDWR|O_CREAT,
0600) = 44
06:57:12 flock(44, LOCK_EX
And this is the output of lsof
[root@xeon ~]# lsof | grep session
mysqld 3212 mysql 178u REG 8,33 275456 26099994 /hd/mysql/sitebuilder3/session.MYI
mysqld 3212 mysql 183u REG 8,33 354592 26099937 /hd/mysql/sitebuilder3/session.MYD
bash 6426 root cwd DIR 8,21 1060864 25133096 /var/lib/php/session
httpd 6698 apache 44uW REG 8,21 115 9814967 /var/lib/php/session/sess_e0f1bb824667860260f9e5bd53da54e9
httpd 6704 apache 44u REG 8,21 138 25135115 /var/lib/php/session/sess_325b2701fcb8fb2d8371d1dd72660e8b
httpd 6718 apache 44u REG 8,21 138 9814423 /var/lib/php/session/sess_a28662f28c3fe91926c7c96267fe324f
httpd 6723 apache 44u REG 8,21 115 9814794 /var/lib/php/session/sess_79249a69f0a929318c3a8d25b1102ff4
httpd 6765 apache 44u REG 8,21 14 9815234 /var/lib/php/session/sess_0983ce89bad9d37eccec89fe83985945
httpd 6773 apache 44u REG 8,21 141 9815254 /var/lib/php/session/sess_298731e4cb90e58f223bc1b1b2da8cef
httpd 6782 apache 44uW REG 8,21 175 9814514 /var/lib/php/session/sess_608cf6bb40ba33a7505f3857e32c3854
httpd 6786 apache 44u REG 8,21 139 9814480 /var/lib/php/session/sess_10913da266608052ffd08e5fa39356c7
httpd 6787 apache 44uW REG 8,21 138 9814292 /var/lib/php/session/sess_3e0fac0590d02b4f111ce4bee9a8bfe1
httpd 6790 apache 44u REG 8,21 14 9815287 /var/lib/php/session/sess_cdfeac2790c55a62744a66caef886857
httpd 6794 apache 44u REG 8,21 138 9814423 /var/lib/php/session/sess_a28662f28c3fe91926c7c96267fe324f
httpd 6798 apache 44uW REG 8,21 93 9814971 /var/lib/php/session/sess_fa0f81edfd26e8653bc94bc9f9af6f6d
httpd 6801 apache 44u REG 8,21 138 9814423 /var/lib/php/session/sess_a28662f28c3fe91926c7c96267fe324f
httpd 6802 apache 44uW REG 8,21 138 9814423 /var/lib/php/session/sess_a28662f28c3fe91926c7c96267fe324f
httpd 6811 apache 44uW REG 8,21 115 9814802 /var/lib/php/session/sess_396f6670549934766bd8268f0b5628fc
httpd 6822 apache 44u REG 8,21 153 9815061 /var/lib/php/session/sess_0d1fcc65d1964fc3d354e4b94f3638eb
httpd 6833 apache 44uW REG 8,21 153 9815173 /var/lib/php/session/sess_05ed9e41766579f10cfdaa2f7e737a1a
httpd 6846 apache 44u REG 8,21 236 9815142 /var/lib/php/session/sess_23b5cad8471778391bf9748d0f4f1230
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Jul 14, 2015
Plesk Backup work when we make instant backup but not with scheduled backup.
There is nothing in the log files (pmmcli.log & migration.log).
How can we correct?
Plesk 12 / Centos
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Jun 26, 2007
i have a really high load (100!) at backup time
i'm using cPanel and i'm using Incremental backup option!
is there any solution?
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Jul 9, 2008
to decrease the load in server when daily backup start ,, the load in server before backup start from 0.80 to 1.20 after daily backup started i see very high load from 16.00 to 32 and 40
any solve for decrease load when backup start from 3 to 7 alot
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Apr 27, 2007
This is a RHEL3 box. It has a couple hundred sites, most of which are pretty quiet most of the time, lately I can't get the load below 3 most of the time. I've tried all the usual TOP PS and the rest, but I'm not seeing my problem. I've attached a text file with extended outputs. but here's what I'm seeing now from TOP and VMSTAT. I'm not sure what else I could be looking at.
I've been watching, and it seems to be Apache most of the time at the top of TOP, and I'm logging slow-queries for myslq, but there aren't many there.
top
10:02:03 up 3 days, 21:23, 2 users, load average: 2.81, 2.83, 3.05
140 processes: 137 sleeping, 2 running, 1 zombie, 0 stopped ....
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Apr 29, 2009
If everyone can take a look at this (while all domains were turned off) and give me any advice to what is eating up resources so badly? The load averages are at 1.3+ with only yum trying to run on the box and it has already been running to nearly two hours were this would typically take 10-15 minutes max prior.
Host: FutureHost
Type: VPS
DC: Dallas
Plan: VPS Elite with 1.5GB of memory
top - 11:40:21 up 2:26, 2 users, load average: 1.35, 1.39, 1.37
Tasks: 41 total, 1 running, 40 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.3%us, 0.0%sy, 0.0%ni, 99.7%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 1572864k total, 202300k used, 1370564k free, 0k buffers
Swap: 0k total, 0k used, 0k free, 0k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1 root 15 0 1988 664 572 S 0 0.0 0:02.57 init
3572 admin 15 0 24488 9308 6072 S 0 0.6 0:00.11 php-cgi
3643 admin 15 0 24488 9324 6088 S 0 0.6 0:00.10 php-cgi
3685 apache 18 0 7940 3688 876 S 0 0.2 0:06.49 lighttpd
3686 admin 25 0 24076 7684 5096 S 0 0.5 0:00.05 php-cgi
3689 admin 25 0 24080 7684 5096 S 0 0.5 0:00.05 php-cgi
3690 admin 25 0 24080 7692 5096 S 0 0.5 0:00.05 php-cgi
3692 admin 20 0 24076 7684 5096 S 0 0.5 0:00.05 php-cgi
3693 admin 20 0 24076 7684 5096 S 0 0.5 0:00.05 php-cgi
3790 admin 20 0 24080 7688 5096 S 0 0.5 0:00.05 php-cgi
3905 admin 20 0 24072 7680 5096 S 0 0.5 0:00.05 php-cgi
4053 admin 20 0 24072 7680 5096 S 0 0.5 0:00.05 php-cgi
5252 admin 20 0 24080 7688 5096 S 0 0.5 0:00.06 php-cgi
5415 admin 15 0 24368 8820 5748 S 0 0.6 0:00.06 php-cgi
5628 admin 20 0 24076 7684 5096 S 0 0.5 0:00.06 php-cgi
5734 root 18 0 9844 2804 2268 S 0 0.2 0:00.52 sshd
5828 root 15 0 2516 1408 1116 S 0 0.1 0:00.02 bash
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May 8, 2009
I have a VPS, and i wanted to know if the CPU / Load Average that shows at my Plesk control panel reports only the usage of my part of the server cpu, or if it is the real/complete cpu usage for the entire server?
So in a simple way, is another user with a vps at the same server is doing a high cpu task at is vps, will it show at my plesk cpu load average?
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Jul 8, 2007
What Should be load average of a VPS to be called as IDEAL?
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Feb 5, 2007
optimize MySql i have load average: 3.49, 3.79, 3.80
my server have more than 200 web site working online i have so many Mysql process ..
my server info:
CPUs:
Quote:
Processor #1 Vendor: GenuineIntel
Processor #1 Name: Intel(R) Xeon(TM) CPU 3.00GHz
Processor #1 speed: 2993.075 MHz
Processor #1 cache size: 2048 KB
Processor #2 Vendor: GenuineIntel
Processor #2 Name: Intel(R) Xeon(TM) CPU 3.00GHz
Processor #2 speed: 2993.075 MHz
Processor #2 cache size: 2048 KB
Processor #3 Vendor: GenuineIntel
Processor #3 Name: Intel(R) Xeon(TM) CPU 3.00GHz
Processor #3 speed: 2993.075 MHz
Processor #3 cache size: 2048 KB
Processor #4 Vendor: GenuineIntel
Processor #4 Name: Intel(R) Xeon(TM) CPU 3.00GHz
Processor #4 speed: 2993.075 MHz
Processor #4 cache size: 2048 KB
Memory Information:
Quote:
Memory: 5190364k/5767168k available (1877k kernel code, 51280k reserved, 759k data, 184k init, 4325120k highmem)
System Information:
Quote:
Linux 2.6.9-42.0.8.ELsmp #1 SMP Tue Jan 23 13:01:26 EST 2007 i686 i686 i386 GNU/Linux
PHP Version: 4.4.4
MySQL Version: 4.1.21-standard
MySql Settings :
Quote:
[mysqld]
skip-locking
character-sets-dir=/usr/share/mysql/charsets/
query_cache_limit=1M
query_cache_size=16M
query_cache_type=1
max_user_connections=100
max_connections=500
interactive_timeout=60
wait_timeout=30
connect_timeout=10
thread_cache_size=96
thread_concurrency=2
key_buffer=8M
join_buffer=1M
max_allowed_packet=24M
table_cache=1024
record_buffer=1M
sort_buffer_size=1024K
read_buffer_size=1024K
max_connect_errors=10
read_rnd_buffer_size=1024K
myisam_sort_buffer_size=16M
socket=/var/lib/mysql/mysql.sock
key_buffer_size=16M
[mysql.server]
user=mysql
basedir=/var/lib
[safe_mysqld]
open_files_limit=4096
[mysqldump]
quick
max_allowed_packet=8M
max_allowed_packet=8M
[mysql]
no-auto-rehash
[isamchk]
key_buffer=16M
sort_buffer=16M
read_buffer=8
write_buffer=8M
[myisamchk]
key_buffer=16M
sort_buffer=16M
read_buffer=8M
write_buffer=8M
[mysqlhotcopy]
interactive-timeout
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May 23, 2008
I've got a dedicated server running the latest release of Debian and Plesk 8.4.0.
It's a Core2Duo, 1Gb RAM and 2 x 160Gb on hardware RAID 1.
There aren't any "heavy" sites on it, Apache is not under any stress... nothing is showing up on 'top' that's eating CPU or RAM... but here's the load:
load average: 2.06, 1.97, 1.81
sample from 'top':
421 qmailq 18 0 1568 344 276 S 0 0.0 0:01.20 qmail-clean
19270 popuser 16 0 36268 33m 2356 S 0 3.3 0:10.40 spamd
28214 root 18 0 2232 1176 856 R 0 0.1 0:00.02 top
1 root 15 0 1944 636 544 S 0 0.1 0:01.20 init
2 root RT 0 0 0 0 S 0 0.0 0:01.14 migration/0
3 root 34 19 0 0 0 S 0 0.0 0:00.04 ksoftirqd/0
4 root RT 0 0 0 0 S 0 0.0 0:00.90 migration/1
5 root 34 19 0 0 0 S 0 0.0 0:00.07 ksoftirqd/1
6 root 10 -5 0 0 0 S 0 0.0 0:00.03 events/0
7 root 10 -5 0 0 0 S 0 0.0 0:00.00 events/1
8 root 12 -5 0 0 0 S 0 0.0 0:00.00 khelper
9 root 10 -5 0 0 0 S 0 0.0 0:00.00 kthread
13 root 10 -5 0 0 0 S 0 0.0 0:00.61 kblockd/0
Anyone got any ideas what might be pushing the load up?
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Nov 14, 2014
This is my free -m
total used free shared buffers cached
Mem: 1998 1903 95 0 45 542
-/+ buffers/cache: 1315 683
Swap: 2662 36 2625
Not good ....
I got 5 wordpress and 5 statics website on this server and 100 visitors by 24H00 each day.
Question 1 : Why the memory is so low and the swap so high ?
Question 2 : Why i don't find high usage process in top command ?
Question 3 How can i resolve this problem ?
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Aug 15, 2008
My site is running really slow at the moment. I checked Virtuozzo for resource usage, and it has been saying this for the past 1/2 hour.
CPU Usage: 0%
Load Average: Varies between 0.88 and 1.3 (anything over 1 is full capacity, and critical)
How can the load average be maxed out when my site hardly uses any CPU usage?
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Dec 19, 2008
I have a server with Core2Duo E6600 CPU, 4 gigs of RAM and 2x250 GB HDD's. What is the "normal" load average I can expect having ~50 websites running on it with medium visits. My current load averages (and most of the time ones) are:
load average: 0.24, 0.13, 0.16
Is this "normal"?
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Apr 4, 2008
how to auto reboot when load average =5. and send an email to me before reboot.
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Apr 27, 2007
I am trying just to extract the 5 minute load average from the output of a uptime command.
The output is as follows:
15:30:23 up 5:42, 3 users, load average: 0.03, 0.06, 0.08
So the value I need is 0.06.
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Jan 19, 2007
CPU load average is around 2-5% on my box. I'd like to know when I'll have to upgrade the CPU. Can I wait and add more accounts until it reaches 90%
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Nov 26, 2008
to display the server load average through HTTP. How may I do that?
Please note that I have all insecure functions disabled, such as exec, system, etc... But I have root access.
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Feb 20, 2008
I have a cPanel server with 4GB RAM
My server hangs time to time, once or twice a day. This is the last status when it happens.
Server Load 75.90 (2 cpus)
Memory Used 92 %
Swap Used 65.78 %
When I was still inside SSH when it happens, the processes I can see inside "top" are a lot of httpd processes.
So I "killall -9 httpd", I had to do it 30~40 times
#killall -9 httpd
#killall -9 httpd
#killall -9 httpd
x 30~40 times until no pid process found & the server load is back to normal.
Before that, I check httpd fullstatus, they look very normal, same goes to what I see inside WHM Apache status & cpu usage status.
At first I thought it was a memory problem after consulting with a server admin, so I replaced all 4GB new ram stick (such a waste)
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Oct 31, 2009
My server is very slow, High CPU, High Apache load....
I got a new server and i had setup a script on it.
No server tweaks has been done.
I run a filehosting site so it gets very slow when traffic is high.
Here is some info:
Code:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
4135 filedip 19 0 12812 8892 2212 R 18.9 0.4 0:00.74 index.cgi
3140 apache 15 0 22624 9604 2768 S 17.3 0.5 1:54.45 httpd
3556 apache 15 0 22792 9592 2768 S 17.3 0.5 0:43.53 httpd
3739 apache 15 0 22672 9556 2744 S 17.3 0.5 1:09.67 httpd
3884 apache 15 0 22664 9560 2744 S 17.3 0.5 0:23.98 httpd
3474 apache 15 0 22672 9572 2756 R 16.1 0.5 1:34.09 httpd
3548 apache 15 0 22792 9560 2740 S 16.1 0.5 1:33.67 httpd
3991 apache 15 0 22640 9588 2756 S 15.1 0.5 0:22.44 httpd
3475 apache 15 0 22672 9580 2756 S 13.2 0.5 1:31.42 httpd
3493 apache 15 0 22664 9592 2768 S 12.9 0.5 1:15.52 httpd
3769 apache 15 0 22664 9580 2756 S 12.9 0.5 0:45.19 httpd
3638 apache 15 0 22664 9576 2756 S 12.3 0.5 0:32.82 httpd
3724 apache 16 0 22664 9580 2756 R 12.3 0.5 0:34.25 httpd
3626 apache 15 0 22672 9580 2756 S 11.7 0.5 0:52.54 httpd
4023 apache 16 0 22792 9560 2740 R 11.3 0.5 0:13.16 httpd
3882 apache 15 0 22664 9576 2756 S 10.1 0.5 0:38.56 httpd
3005 apache 15 0 22672 9588 2768 R 9.1 0.5 2:06.61 httpd
I dont know much about server managment...
how to fix this so server doesnt go slow?
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