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Thread: Strange Load problems (again)
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01-24-2007, 05:03 PM #1Web Hosting Evangelist
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Strange Load problems (again)
hello again all,
ok, ive posted about this before, but now i have reason to ask again.
my server is experiancing stupid (relitivly) loads even tho at this precise moment their is 15 members online, but my top output looks like the following
Code:top - 20:59:51 up 2 days, 5:43, 1 user, load average: 0.83, 0.75, 0.62 Tasks: 66 total, 1 running, 65 sleeping, 0 stopped, 0 zombie Cpu(s): 45.2% us, 4.0% sy, 0.0% ni, 50.8% id, 0.0% wa, 0.0% hi, 0.0% si Mem: 507820k total, 477528k used, 30292k free, 129348k buffers Swap: 2104504k total, 160k used, 2104344k free, 248656k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 19914 nobody 15 0 15356 7088 2216 S 20.6 1.4 5:02.65 /usr/local/apache/bin/httpd -DSSL 19921 nobody 17 0 15364 7232 2352 S 19.6 1.4 5:22.44 /usr/local/apache/bin/httpd -DSSL 25952 root 16 0 25788 4080 728 S 5.6 0.8 24:39.38 ./sc_trans_linux 3110 mysql 15 0 100m 15m 3400 S 2.7 3.2 94:10.06 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --pid-file=/var/lib/mysql/ser 1756 root 17 0 3148 944 760 R 0.7 0.2 0:00.24 top -c 1722 root 16 0 8300 2320 1848 S 0.3 0.5 0:00.16 sshd: root@pts/2 1 root 16 0 3660 552 472 S 0.0 0.1 0:00.81 init [3] 2 root 34 19 0 0 0 S 0.0 0.0 0:00.17 [ksoftirqd/0] 3 root 5 -10 0 0 0 S 0.0 0.0 0:00.01 [events/0] 4 root 5 -10 0 0 0 S 0.0 0.0 0:00.02 [khelper] 5 root 15 -10 0 0 0 S 0.0 0.0 0:00.00 [kacpid] 20 root 5 -10 0 0 0 S 0.0 0.0 0:00.00 [kblockd/0] 38 root 15 0 0 0 0 S 0.0 0.0 0:00.23 [pdflush] 39 root 15 0 0 0 0 S 0.0 0.0 0:00.67 [pdflush] 41 root 8 -10 0 0 0 S 0.0 0.0 0:00.00 [aio/0] 21 root 15 0 0 0 0 S 0.0 0.0 0:00.00 [khubd] 40 root 15 0 0 0 0 S 0.0 0.0 0:02.56 [kswapd0] 187 root 25 0 0 0 0 S 0.0 0.0 0:00.00 [kseriod] 298 root 15 0 0 0 0 S 0.0 0.0 0:00.57 [kjournald] 1333 root 6 -10 3116 468 380 S 0.0 0.1 0:00.03 udevd 1725 root 6 -10 0 0 0 S 0.0 0.0 0:00.00 [kauditd] 1765 root 6 -10 0 0 0 S 0.0 0.0 0:00.00 [kmirrord] 1792 root 15 0 0 0 0 S 0.0 0.0 0:00.00 [kjournald] 1793 root 15 0 0 0 0 S 0.0 0.0 0:02.45 [kjournald] 1794 root 15 0 0 0 0 S 0.0 0.0 0:00.03 [kjournald] 1795 root 15 0 0 0 0 S 0.0 0.0 0:00.78 [kjournald] 1796 root 15 0 0 0 0 S 0.0 0.0 0:05.17 [kjournald] 2649 root 16 0 2904 556 460 S 0.0 0.1 0:00.66 syslogd -m 0 2653 root 16 0 2284 380 316 S 0.0 0.1 0:00.00 klogd -x 2708 root 16 0 4392 532 272 S 0.0 0.1 0:00.02 rpc.idmapd 2776 root 15 0 2664 508 300 S 0.0 0.1 0:00.02 /usr/sbin/smartd 2785 root 18 0 1692 440 368 S 0.0 0.1 0:00.00 /usr/sbin/acpid 2851 root 18 0 4884 1228 1040 S 0.0 0.2 0:00.00 /bin/bash 2940 root 18 0 2924 756 624 S 0.0 0.1 0:00.01 xinetd -stayalive -pidfile /var/run/xinetd.pid 2963 root 16 0 8036 2024 984 S 0.0 0.4 0:00.11 sendmail: accepting connections 2971 smmsp 16 0 7544 1624 812 S 0.0 0.3 0:00.00 sendmail: Queue runner@01:00:00 for /var/spool/clientmqueue 2987 root 16 0 6520 932 540 S 0.0 0.2 0:00.10 crond 3014 dbus 16 0 3248 820 676 S 0.0 0.2 0:00.09 dbus-daemon-1 --system 3023 root 16 0 6936 4636 1316 S 0.0 0.9 0:00.60 hald 3044 root 21 0 1480 392 320 S 0.0 0.1 0:00.00 /usr/sbin/portsentry -tcp 3077 root 21 0 5364 1244 1084 S 0.0 0.2 0:00.01 /bin/sh /usr/bin/mysqld_safe --datadir=/var/lib/mysql --pid-file=/var/lib/mysql/server.radiodmp. 3181 root 16 0 7216 4912 1360 S 0.0 1.0 0:01.15 /usr/bin/perl /usr/libexec/webmin/miniserv.pl /etc/webmin/miniserv.conf 3185 root 18 0 2636 412 356 S 0.0 0.1 0:00.00 /sbin/mingetty tty1 3186 root 18 0 2844 412 356 S 0.0 0.1 0:00.00 /sbin/mingetty tty2 3187 root 18 0 1564 412 356 S 0.0 0.1 0:00.00 /sbin/mingetty tty3 3188 root 18 0 1684 412 356 S 0.0 0.1 0:00.00 /sbin/mingetty tty4 3189 root 18 0 2036 412 356 S 0.0 0.1 0:00.00 /sbin/mingetty tty5 3190 root 18 0 1756 412 356 S 0.0 0.1 0:00.00 /sbin/mingetty tty6 3834 named 16 0 37080 2828 1920 S 0.0 0.6 0:05.73 /usr/sbin/named -u named -t /var/named/chroot
cureent details on the server are its using apache to serve dynamic pages. and ive offloaded all images to lighttpd which isnt even registering a load so thats good. the site running on server is very mysql heavy but ive tweaked mysql to the best i can. not sure about any tweaks i can do to apache tho
thanks
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01-24-2007, 05:28 PM #2Vice Cheese
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Well, the load stats doesnt look too bad. What are you basing you "heavy load" issues on? pages loading slow? server responding to commands slowly? or something else?
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01-24-2007, 05:42 PM #3Web Hosting Evangelist
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the fact the sites taking seconds to pull pages up and normally doesnt, and the fact that the servers only a 2ghz celeron so any load over about 1.5 tends to pretty much kill it
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01-24-2007, 06:41 PM #4The least among you.
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Your assessment about killing a 2ghz celeron with a 1.5 load is a bit off, to say the least. Load average is not what you should necessarily be looking at, but rather the idle percentage of your CPU. If your machine is hacked, the 1.5 load you mention will not be indicative of the actual load average in the case of a process-hiding kernel module. 'top' will never see hacked processes, and thus, the load they generate won't be reflected. But hackers can't seem to modify the idle CPU percentage; use that as your benchmark. If you have a CPU that's consistently 10% idle and a load average of 0.3, you'll know something is not right.
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01-24-2007, 06:50 PM #5Web Hosting Master
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run netstat -n and look at the amount of network connections and to what ports.
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01-24-2007, 09:10 PM #6Newbie
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try to reload /restart mysql
then see if the load is still high of that it may be an other process
but that is =/var/lib/mysql/server.radiodmp.
streaming radio ?
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01-25-2007, 04:00 AM #7Web Hosting Evangelist
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the servers hostname is server.radiodmp.net - i do run a shoutcast stream(and sc_trans) off it but the load that places is usually nil. now ive got a weird problem. last night lighttpd was happily serving images on port 81 now it isnt and wont even load any images, and yes ive tried restarting it. HELP. as its crashing my site
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01-25-2007, 04:02 AM #8Web Hosting Evangelist
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scratch the lighttpd problem, seems apf had magicly restarted itself
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01-25-2007, 04:29 AM #9Web Hosting Master
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Originally Posted by tical
The server will run ok with 3+ load (but less than 5 )
The top processes are from your website:
19914 nobody 15 0 15356 7088 2216 S 20.6 1.4 5:02.65 /usr/local/apache/bin/httpd -DSSL
19921 nobody 17 0 15364 7232 2352 S 19.6 1.4 5:22.44 /usr/local/apache/bin/httpd -DSSL
There is no IO waiting, so it couldn't be logs processing.PremiumReseller.com Hyper-V SSD VPS USA London Singapore
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01-25-2007, 04:31 AM #10Web Hosting Evangelist
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ill keep an eye on it then, out of curiosity though would disabling SSL in apache help at all (because i dont need ssl )
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01-25-2007, 07:34 AM #11Newbie
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try to clear your /tmp
and restart httpd
why is /usr/local/apache/bin/httpd -DSSL started by nobody and not as user apache ?
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01-25-2007, 08:42 AM #12Web Hosting Evangelist
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because i havent configured apache to run as a user (yet). how do i disable ssl on apache though ?