General :: Having A Firewall / Proxy That Has An Extremely High Load - No Apparent Activity?
Aug 19, 2010
I have a firewall / proxy that has an extremely high load, but I can't figure out what's using it. No real cpu usage, the disks are sleeping except for a little log activity, it's on gigabit ethernet and not close to maxing out... Command link stuff runs fast, nothing seems slow, yet the load is sky-high. IME this kind of load is associated with a lot of disk I/O, but that's not the case here. What could be causing this, what else factors into the load?
uname -a:
Code:
Linux myfirewall.mydomain.com 2.6.8 #1 SMP Mon Oct 18 11:20:22 CDT 2004 i686 i686 i386 GNU/Linux
top:
Code:
07:55:43 up 1503 days, 17:13, 5 users, load average: 26.50, 26.33, 26.25
Tasks: 245 total, 2 running, 243 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.6% us, 1.1% sy, 0.0% ni, 95.0% id, 2.7% wa, 0.2% hi, 0.5% si
Mem: 3895508k total, 3582272k used, 313236k free, 207468k buffers
Swap: 2040244k total, 112664k used, 1927580k free, 1358744k cached
View 4 Replies
ADVERTISEMENT
Sep 4, 2010
My problem is extremely slow write on hard disk and 100% cpu usage and it happens when I want to write something on the hard derive not any other external derive.
Tried a fresh ubuntu install. No change. I am not even sure if it is a software or hardware problem.
View 1 Replies
View Related
Mar 18, 2011
However, I would like to ask if anyone else is experiencing Higher than normal CPU usage with openSuSE 11.4 PR?? My system, which is probably similar to others, increases the air flow with the fan on the CPU when it is working hard. Mine gets rather noisy. (don't have it on the floor, but right next to me) This fan speed increase has been lots more prevalent in the newest version of openSuSE.
Have also used 'top' and it looks like xorg is one of the biggest hogs. However, when I use VMware it goes into hyper drive a lot.
View 9 Replies
View Related
Mar 11, 2011
My Samsung R530 laptop is over heating, I believe it is the fan because I can't feel it working at all. When it over heats it just shutsdown. A few times it is came up with a warning while shutting down for a split second saying a extremely high temperature and shutting down seconds later. I am running Ubuntu 10.10 with Nvidia Geforce with Cuda. I have tried reinstalling Ubuntu, installing Fedora... Nothing I have tried has worked.
View 6 Replies
View Related
Dec 23, 2010
Where does one look in terms of diagnostics after a system lockup and hard reset? For example, one of my computers, running Fedora 14 i686, has taken to locking up quite a bit lately. My only way out is a hard reset. Now, once the thing is booted back up I'd like to try to figure out where the problem lies. Where do I look? Will any of the log files reveal anything relevant to me? If so, what sort of things would I be looking for. Keywords?
This same box also locked up when I had Fedora 14 x86_64 installed. I had read that there were some issues with the newer 64 bit kernels that were causing lockups and / or extremely high loads. This is why I switched back to the 32 bit version, 2 days ago to be exact. The box gets little use. It's a toy really and not my main "daily use" computer. It is, however, running folding@home. Maybe that's where the problem is. About 15 minutes ago I called home and had my wife reset the box, then I logged in from work and stopped the folding service. I'll have to see if it locks up without folding running. Folding was running on this box when I had the 64 bit version installed also.
View 3 Replies
View Related
Apr 28, 2011
I'm using Ubuntu 10.10, with a wireless HP j4680. That prints on occassion. I've tricked it once by creating a new printer System/Admin/printers, setting the "new" printer to default then deleting the old printer. Not working that way this time. I've search the old forums, a lot of activity in 2007-2008 but nothing since.
Is there a way to defeat HP's efforts to force it's customers to purchase the extremely high, close to 50.00 dollars in my area.
View 4 Replies
View Related
Sep 29, 2010
I have setup proxy server as squid Now i would like to enable High Availability between two squid proxy servers acting as one.
View 6 Replies
View Related
Apr 24, 2010
I'm running Slackware 13 with a custom kernel based off of 2.6.32.3. I tend to leave my system on 24/7, as well as my web browser. Originally it was Firefox and now it is Google's Chrome. Usually about a day of leaving the web browser open my HD activity spikes so high that I can barely do anything on the system until I kill the web browser. This has been happening with both Firefox AND Chrome! As soon as the browser processes are killed, the system returns back to normal.
View 10 Replies
View Related
Feb 11, 2010
how to implement proxy server with firewall and the client users should be authinticated by asking username & password while opening their web browsers and finally i want to see the websites visted list of all the client computers On cent os 5.3
View 1 Replies
View Related
Aug 10, 2011
I wrote a script to extract and get the the name of *.gz in a foler . Since running that script every 10 minutes, load average on my server increases more than 10.I checked with 'top' and it showed many D process.
View 2 Replies
View Related
Nov 14, 2010
During downloads, the top command shows the Firefox process at 100% CPU. Yesterday I tried to download an .iso image. After a few hours the Firefox window would not refresh nor would it respond to input. I tried the wget command. It used negligible CPU time and completed in 28 minutes.
This problem is easy to reproduce because it happens every time I download a file in Firefox. It also happens when I use a fresh profile to run Firefox without any extensions or plugins.
This is Firefox 3.6.12 on Fedora 14.
View 3 Replies
View Related
Feb 10, 2010
I have High load on my server and my investigation shows nothing (so i believe that my investigations is wrong ), the load average in this moment is 10.13, 9.47, 8.24. , mentioning the below.
- The disk utilization (all the disks) is near 0, as the result of the IOSTAT
- There is no blocked processes (as a result of VMSTAT).
- I have two processors (dual core) , the maximum load average should be something around 4.
- The server always have above 8 load average in all times interval.
btw , my OS is RHEL AS release 4 (Nahant Update 7)Kernel :Linux 2.6.9-78.ELhugemem #1 SMP i686 i686 i386 GNU/Linux
View 8 Replies
View Related
Jan 23, 2011
I would like Windows laptops to use a proxy to connect to the network so I can check network activity and see if any malware is trying to connect and where it is trying to connect to. So on my Ubuntu desktop I would like to install something as simple as possible to be used as a proxy, I've seen squid but does that only handle http requests? Does that handle streaming requests and such as well? This so I can see the source of some media that's being played in flash or pps.tv
View 3 Replies
View Related
Oct 31, 2010
After changing servers and moving things around, I have one system which serves the /home directories, and for some reason, it is extremely slow. I've looked for duplicate IPs, signs of a HW problem, etc. and cannot figure out why the system is running with a high load, high iowaits, and low responsiveness. The servers and clients are slackware 12.2 and 13.1 respectively.
View 3 Replies
View Related
Apr 10, 2011
After installing reddit, my ubuntu stuck with high cpu usage and system load.
Code:
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
8634 reddit 20 0 12180 8960 2572 R 12.1 0.9 0:00.51 paster
8611 root 20 0 23756 17m 3816 R 11.8 1.7 0:00.99 paster
8613 reddit 20 0 23200 17m 3908 R 11.8 1.7 0:00.96 paster
8617 reddit 20 0 15072 11m 2688 R 11.8 1.1 0:00.69 paster
8620 reddit 20 0 14372 10m 2680 R 11.8 1.1 0:00.66 paster
[Code]...
View 1 Replies
View Related
Jan 18, 2011
I have an enormous quadcore machine with 16gb ram and dual gigabit NICs. It used to be for MySQL but we have upgraded the whole database infrastructure so now this server is left floating. I had the great idea of turning this into a reverse-proxy (using apache mod_proxy) and it really handles a ton of requests. But I have a feeling that we are not getting the most use out of what it can offer.
Our traffic consists of a few thousand very small (less than 10 byte) ajax calls per second, and frequently I find we are running out of kernel allocated network stack to handle all the requests. Often we get the kern.log warning "possible SYN flooding on port 80. Sending cookies." and other things like this. Obviously we are not getting SYN flooded, we just have very high demand.
So far I have found a few kernel tuning guides to tell the kernel to allocate more of the base system memory for networking but every guide I have found has been for the purpose of increasing the performance between WAN links (direct backbones between offices etc) and usually with very large file sizes being the priority. One such example (and great) write up is here:
cyberciti.biz/faq/linux-tcp-tuning/
I was hoping some people could provide further input, such as along the lines of disabling nf_conntrack (to speed up socket set up/tear down time) or anything that will speed up a high throughput proxy like mine. Any links to studies or benchmarks between different configurations or hardware gets extra points!
View 7 Replies
View Related
Sep 15, 2015
I have a debian system with the following version you can se bellow. My problem is that one one single core of 4 it's running 100% all the time and i cant seem to find out why. The load is also high(load average: 0.91, 0.75, 0.40) because of this. This keeps happening even after reboots. The system if freshly installed twice and the same problem occours as soon as it boots. Something called kworker is running and causing the load / CPU load, is that normal for a fresh install??
root@Cyberdyne:/# lsb_release -da
No LSB modules are available.
Distributor ID: Debian
Description: Debian GNU/Linux 8.2 (jessie)
Release: 8.2
Codename: jessie
View 5 Replies
View Related
Apr 6, 2011
I need to restrict access to the internet and keep unwanted software out of LAN with 45 workstations at the school I teach at. I thought about configuring a proxy and firewall on SuSE 11.4?
View 9 Replies
View Related
Jun 17, 2011
I wanted to implement a server for a small network, but am a bit in-experienced. The server that I want to use should be able to do load-balancing (two connections) and also act as firewall/proxy. And also it should be able to do some bandwidth management. The network that its going to serve has two parts. One part of the network should be served, say during day time,and the other during night time. The one that is going to be served at night-time should not have access to internet during day-time, but should have access to, say local mirror-server. I am a bit confused what software/hardware to use. I am planing to use EndianFirewall, but since I don't have experience, don't know if it can do all that I need (?).
View 1 Replies
View Related
Apr 2, 2011
on an old server of mine, as soon as apache is started, the load average that I get to see with 'top', that normally is under 1, now just steadily climbs up and up to easily 150, in fact disabling the webserver from serving any webpage. I've checked netstat, and I'll try to upload the output. The ip's that are in there I've blocked with iptables. But that doesn't help or so it seems. I see nothing weird in the error logs. As soon as I stop apache, the load goes back to normal. As soon as I (re)start it, up it goes again. What can cause this and how do I get rid of it?
p.s. It's an old server, fedora3 or so, and I've got a new one to which I'll transfer the domains, but until that's completely done, I'd like this one to run as it has for years...
View 1 Replies
View Related
Dec 14, 2009
The load average is almost 1.06, but cpu is not 100% utilized... I am just wondering why load average is 1.06 in that case still ? (well i monitored cpu for long time, it never exceeded above 40%)can anyone explain the reason behind it ? Also is the system over utilized in this case ?
View 3 Replies
View Related
Aug 18, 2011
I am having Red Hat LINUX 5 Enterprise Server and facing problem regarding very very high server load (load average is going high up to 60-70)due to which server is getting hang.
View 7 Replies
View Related
Feb 22, 2010
I'm looking to setup a web proxy using squid.I already have a hardware firewall NAT'ing device that all the connections go through.I'm planning to install the squid web proxy on a VM (single nic) and place it behind the hardware firewall as below:internet -- modem -- Firewall --switch--squid proxy (192.168.10.100)--client workstation ((192.168.10.200)(client workstation is connected to the same switch as the squid proxy)And on the client workstation's Internet Explorer: Tools->Options->Connection-Lan Settings and check the box for "Use a proxy server for your LAN then type the address of the squid proxy (192.168.10.100) and set the port to 3128. Check the box for Bypass proxy server for local addresses.
View 1 Replies
View Related
May 5, 2010
Since upgrading from 9.10 to 10.04, my system is noticeably less responsive and exhibits halting behavior for at times 10s of seconds. There is nothing obvious in the various logs that I can find. The only objective indication I can find that demonstrates that something is seriously wrong is that my load average never drops below 0.5 and is often over 1.5, even at idle. In this situation, top/ps/whatever shows very few processes running (usually just top). This suggests to me that either the new kernel scheduler is horrible or that something new is resulting in blocking I/O or other uninterruptable sleeps.Typical top output:
Quote:
top - 12:18:01 up 1 day, 49 min, 5 users, load average: 1.42, 0.86, 0.71
Tasks: 262 total, 1 running, 261 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.9%us, 0.8%sy, 0.0%ni, 97.6%id, 0.0%wa, 0.0%hi, 0.7%si, 0.0%st
[code]....
View 9 Replies
View Related
Jul 2, 2010
i've been using 10.04 since may and it's been good to me thus far. BUT recently, i've been experiencing unusually high system loads. it will happen at random it seems. for instance, it just did it a few minutes ago when i turned on and mounted a external firewire drive. i also had ogmrip open, but NOT running as well as transmission and pidgin. yesterday, i was encoding a rather big movie with ogmrip and around 25%, the system load quickly increased to 10 and held there until i force quit ogmrip. it went back to normal after the force quit.
a previous night, i was installing the popular ubuntu themes via the terminal. at the same time, i was also using ogmrip and the system load shot up during the download/install and held there the rest of the night. sooo...unless it's somehow related to ogmrip i don't know what's going on. it even did it when ogmrip WAS NOT processing any video, just simply open.
View 2 Replies
View Related
Jul 6, 2010
I am facing a high load averages in one of my linux server find the output of the top command.
[code]...
How to reduce the load averages.
View 3 Replies
View Related
Jul 28, 2010
I have a apache cluster with more than 10 nodes, based on ldirector and heartbeat. The problem is that I cannot predict if my nodes will handle the traffic in the next day (hosting a website based on daily campaigns). So I decided to limit the number of active connection on the nodes (from apache), but this is only a temporary solution. I want to create a page that will appear to users that are getting over the limit. Has anyone made this before? Can you tell me how is it possible (I don't want a how to, just a starting point to study)? I think squid can do it, but I don't know how to search for it. To give you an example of what I want, you can see the same thing on deviantart.
View 3 Replies
View Related
Jan 13, 2010
I have high load average on the servers with no identified reason (From my point of view)
View 2 Replies
View Related
Apr 5, 2009
I recently installed Centos-5.3-x86_64 in a PowerEdge2950 machine, to serves as an ftp server using proftpd-1.3.2. I noticed that the CPU load is much higher than the days when I was using RHEL-4.7-X86_64. In the past, CPU load get higher than 100 only when there're about 400 online users. But in Centos-5.3, the CPU load gets higher than 150 when there're 200 users.
The details of the server machine: Intel Xeon E5430, 16 GB RAM, 1.8 TB as a RAID disk, 400GB hardisk used to installed the system.
More details:
View 11 Replies
View Related
Sep 12, 2011
I am running a CentOS 5.6 32 bit installation under VMWare ESXi and have been experiencing some very high load values from time to time. The server is running multiple installations of gameservers, and the load fluctuates from around 1 to 9, with more or less the same amount of players playing (give or take 5-10 of a possible 80). I've been running DStat with almost all possible metrics, and, except for the large fluctuations in load, nothing else out of the ordinary seems to happen when load is rising. (Log data can be provided, if anyone wants to see it). Disk IO, Network throughput, memory consumption, CPU usage, process count, all stay at the same levels when the load is 1 as when it is 9. How I can begin to troubleshoot this, and find out why the load goes to such high values?
View 1 Replies
View Related
