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• List and kill running processes on Mac OS in Ctrl/Alt/Delete-like way?

  - by AP257

  So, what do you do on a Mac when a process (as opposed to an application) is hogging CPU, swamping your machine, and you need to kill it? I know you can use top or open Applications > Utilities > Activity Monitor and kill it from there. But what happens when the process is already using so much CPU that doing either of those tasks is impossible? On Windows, you can just do Ctrl/Alt/Delete and the process list will reliably open. So no matter how much your computer is thrashing, you always have access to the list of processes. On Mac OS, there's Cmd/Alt/Escape, which reliably shows running applications. Fine when it's an application causing the problem. But: what do you do if it's a process?

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• building a new pc - no display, no beeps

  - by Adam

  Hi Building a new pc using this motherboard: GA-MA785GMT-UD2H and a 500W power supply (1 x 20 pin & 1 x 4 pin connectors). The CPU fan, hard drive and power supply all spin up but no display on the monitor and no beeps. Have tried: taking out all of the memory and still no beeps used a different power supply and still no display I only have the Motherboard, memory, CPU, heat sink & fan & power supply connected. Any ideas? Do I have a faulty motherboard?

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• Can I use a micro ec2 instance as a load balancer for my other large ec2 instances?

  - by Ryan Detzel

  The issue I'm having is I want to upgrade that instance often(security patches, etc) but I'm affriad something will fail and the site will be down. So, I want to have another server setup and load balance between the two that way I can easily disable one, upgrade it and once it's working add it back in the mix and repeat. What kind of machine is needed for a load balancer? Would the micro instance work just fine? The site gets anywhere from 3-10k hits/day. I plan on using nginx as the load balancer.

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• free -m output, should I be concerend about this servers low memory?

  - by Michael

  This is the output of free -m on a production database (MySQL with machine. 83MB looks pretty bad, but I assume the buffer/cache will be used instead of Swap? [admin@db1 www]$ free -m total used free shared buffers cached Mem: 16053 15970 83 0 122 5343 -/+ buffers/cache: 10504 5549 Swap: 2047 0 2047 top ouptut sorted by memory: top - 10:51:35 up 140 days, 7:58, 1 user, load average: 2.01, 1.47, 1.23 Tasks: 129 total, 1 running, 128 sleeping, 0 stopped, 0 zombie Cpu(s): 6.5%us, 1.2%sy, 0.0%ni, 60.2%id, 31.5%wa, 0.2%hi, 0.5%si, 0.0%st Mem: 16439060k total, 16353940k used, 85120k free, 122056k buffers Swap: 2096472k total, 104k used, 2096368k free, 5461160k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 20757 mysql 15 0 10.2g 9.7g 5440 S 29.0 61.6 28588:24 mysqld 16610 root 15 0 184m 18m 4340 S 0.0 0.1 0:32.89 sysshepd 9394 root 15 0 154m 8336 4244 S 0.0 0.1 0:12.20 snmpd 17481 ntp 15 0 23416 5044 3916 S 0.0 0.0 0:02.32 ntpd 2000 root 5 -10 12652 4464 3184 S 0.0 0.0 0:00.00 iscsid 8768 root 15 0 90164 3376 2644 S 0.0 0.0 0:00.01 sshd

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• Motherboard Issue - 3 Beep Bios (memory error) despite new RAM

  - by Glenn

  I have an Intel dG43RK motherboard, bought new and sealed, and have tried two different brands and speeds of RAM with a 3-beep BIOS indicating a memory error, which also occurs without RAM installed (as it should). The memory tried is; 1x4GB 1333 Kingston HyperX DDR3 RAM (New and Sealed) 2x4GB Team Elite 1066 DDR3 RAM (New and Sealed) I have tried multiple configurations and seating layouts and still no luck. I also have a GT520 graphics card on board as I dislike in-built graphics in most cases and had it at hand (also new and sealed). The only used parts are the CPU, which worked in my previous tower and was directly taken from the PC into the new set-up and the CPU Fan which will be replaced with a new fan in the foreseeable future once this is resolved. I've run out of ideas myself and any help is appreciated.

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• IIS slow response

  - by Martin Ševic

  I have developed ASP.NET 4.5 application which take infos about sensors from sqlite database every 3 seconds. This application runs nice on my local develop machine on IIS Express server. I have created virtual machine (4x 3,25 GHz CPU; 6GB RAM) where i have installed Windows Server 2012 and IIS 8 service in order to test application on real server because we will run it on production machine later. After installing VC++ 2010 x64 and VC++ 2010 x86 and set "Enable 32-bit application" to true in application pool website started to work but there is a large problem with response time. There is a for example 10 seconds delay before page loads. CPU utillization is about 10% and RAM about 1,5GB. I am new to configuring IIS server so i want to ask if there is some tip how to make it faster. I am sure, there will be some twist which will make it normal work. Many thanks.

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• kvm process has too large a memory footprint on host

  - by gucki

  I'm using latest ubuntu quantal and start a kvm guest which should have 2048 MB of memory. Now after a few hours I can see that the kvm process of this guest is around 2700 MB, so 700 MB more than the guest should be able to consume. I mean a small overhead like 1% would be ok, but not 30%?! root 8631 74.0 22.2 4767484 2752336 ? Sl Nov07 512:58 kvm -cpu kvm64 -smp sockets=1,cores=2 -cpu kvm64 -m 2048 -device virtio-blk-pci,drive=drive-virtio0,id=virtio0,bus=pci.0,addr=0xa,bootindex=100 -drive file=rbd:data/vm-disk-1,if=none,id=drive-virtio0,cache=writeback,aio=native -device virtio-net-pci,netdev=net0,bus=pci.0,addr=0x12,id=net0,mac=02:7a:86:e6:1a:6c,bootindex=200 -netdev type=tap,id=net0,vhost=on -usbdevice tablet -nodefaults -enable-kvm -daemonize -boot menu=on -vga cirrus root 8694 0.0 0.0 0 0 ? S Nov07 0:00 [kvm-pit/8631] How is this possible and how to prevent it?

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• Virtualbox crashes quite often in Windows 8

  - by user1776158

  I just installed Windows 8 on my computer. I got the ISO and the product key from my university so the software itself is sound. I use alot of virtual box. And ever since I moved to Windows 8, I have noticed that virtual box crashes more often. In particular, it is very very bad at opening multiple guests. My CPU usage will be at like 20% and I only have 3 guests open and my entire computer just freezes. Cursor and all. In Windows 7, I was able to open like 6 (not that I ever needed to) and really push my CPU. I havent experience any other issues with Windows 8 yet. Has anyone encountered this? Thanks!

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• High Load average threshold in linux

  - by user2481010

  My one of friend said that his server load average sometime goes above 500-1000, for me it is strange value because I never saw load average more than 10. I asked him give me some snapshot of top and memory usages, he gave following details: TOP USAGES top - 06:06:03 up 117 days, 23:02, 2 users, load average: 147.37, 44.57, 15.95 Tasks: 116 total, 2 running, 113 sleeping, 0 stopped, 1 zombie Cpu(s): 16.6%us, 6.9%sy, 0.0%ni, 9.2%id, 66.5%wa, 0.0%hi, 0.8%si, 0.0%st Mem: 8161648k total, 7779528k used, 382120k free, 3296k buffers Swap: 5242872k total, 1293072k used, 3949800k free, 168660k cached Free $ free -gt total used free shared buffers cached Mem: 7 6 1 0 0 4 -/+ buffers/cache: 1 5 Swap: 4 0 4 Total: 12 6 6 Total cpu $ nproc 8 my question is it possible load average more than 100 on 8 core,12 GB mem Server? because I read many tutorial,article on load average, it said that thumb rule is "number of cores = max load" according to thumb rule here is max load average 16 then how his server running with 147.37 load server? he said that it is least value (147.37) some time goes more than 500.

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• Lan DNS not working after reinstall of Ubuntu 13.10

  - by DrorCohen

  I upgrade my Ubuntu desktop to 13.10. When I say upgrade I mean installed on a new partition from scratch (old partition is available if To the problem: I'm trying to ping a host (Drobo-FS server) by it's host name. I get "Unknown Host". However pinging from another computer on the same lan - works fine (a laptop with 12.04 lts). for that matter every ping from the 13.10 to the local lan by hostname fails, ping with ip works. I don't have a local DNS server but somehow all the other computers in the network find each other by host name - only this new one fails... help appreciated...

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• Will installing an Ultra ATA cable backwards affect performance?

  - by GMMan

  I've recently purchased a hard drive upgrade for my Xbox 320GB WD Caviar Blue WD3200AAJB and StarTech.com Ultra ATA/66/100/133 cable IDE66 yes I'm crazy When it came to installing the cable, it was too short (my fault), and there wasn't enough space between the master and slave ends to reach both the DVD drive and the hard drive. The only thing I could do was install the cable backwards and twisting it quite a bit to make it fit. The upgrade works, but reading the manual for the hard drive I replaced (10GB Seagate U Series 5), apparently there is a specific way you have to connect the cable. I don't have that option, so the question comes down to, will my drive performance be at Ultra ATA levels, or is it still performing at original ATA speeds? Is there any way I can test this (benchmarking software for Xbox)?

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• HP p410i array controller - what happens if i add memory?

  - by James

  I have a p410i array controller that only has 256ram. We want to create a raid 5 so we have procured a 512 write back cache module. If we install the write back cache, will this erase the existing raid information. The server currently has 2 disks in raid 1. 6 are spare waiting for an upgrade to create a raid 5. the concern is if we replace/upgrade the memory for the controller, we will wipe the existing production raid 1 array. Thanks in advance.

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• copy WinXP Home recovery files to new SSD

  - by maGz

  My wife's Samsung netbook, which has Windows XP Home Edition OEM and a 5400 SATA 2 HDD, has finally crawled to (almost) a halt, and I've decided to install an OCZ SSD into it. The problem is that the machine came with no recovery media, but the recovery partition exists and I can boot into it. How can I go about creating a bootable DVD from that partition, and then boot off that to install on the SSD? NOTE: My aim after this is to upgrade to Windows 7 Home Premium, as the upgrade option is a lot cheaper than purchasing a retail or DSP equivalent.

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• Debian - Can't stop MySQL; permissions?

  - by anon

  I just tried to upgrade from debian squeeze to unstable by replacing 'squeeze' with 'unstable' in /etc/apt/sources.list. The upgrade went smoothly except for mysql, which failed because it couldn't stop mysql. /etc/init.d/mysql stop simply returns that it failed, but if I try to get the status with /etc/init.d/mysql status it gives me this error: me@debian:~$ sudo /etc/init.d/mysql status /usr/bin/mysqladmin: connect to server at 'localhost' failed error: 'Access denied for user 'debian-sys-maint'@'localhost' (using password: YES)' . mysql is running fine, and I checked the permissions for debian-sys-maint in phpmyadmin and it's allowed to do everything, but only connect from 'localhost.'

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• How do I change the output line length from the "top" linux command running in batch mode

  - by Tom

  The following command is useful to capture the current processes that are taking up the most CPU in a file: top -c -b -n 1 > top.log The -c flag is particularly useful because it gives you the command line arguments of each process rather than just the process name. The problem is that each line of output is truncated to fit on the current terminal window. This is ok if you can have a wide terminal because you have a lot of the output but if your terminal is only 165 characters wide, you only get 165 characters of information per process and it is often not enough characters to show the full process command. This is a particular problem when the command is executed without a terminal, for example if you do it via a cron job. Does anyone know how to stop top truncating data or force top to display a certain number of characters per line? This is not urgent because there is an alternative method of getting the top 10 CPU using processes: ps -eo pcpu,pmem,user,args | sort -r -k1 | head -n 10

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• Choosing parts for a high-spec custom PC - feedback required [closed]

  - by James

  I'm looking to build a high-spec PC costing under ~£800 (bearing in mind I can get the CPU half price). This is my first time doing this so I have plenty of questions! I have been doing lots of research and this is what I have come up with: http://pcpartpicker.com/uk/p/j4lE Usage: I will be using it for Adobe CS6, rendering in 3DS Max, particle simulations in Realflow and for playing games like GTA IV (and V when it comes out), Crysis 1/2, Saints Row The Third, Deus Ex HR, etc. Questions: Can you see any obvious problem areas with the current setup? Will it be sufficient for the above usage? I won't be doing any overclocking initially. Is it worth buying the H60 liquid cooler, or will the fan that comes with the CPU be sufficient? Is water cooling generally quieter? Is the chosen motherboard good for the current components? And is it future-proof? I read that the HDD is often the bottleneck when it comes to gaming. I presume this is true to other high-end applications? If so, is my selection good? I keep changing my mind about the GPU; first the 560, now the 660. Can anyone shed some light on how to choose? I read mixed opinions about matching the GPU to the CPU. Will the 560 or the 660 be sufficient for my required usage? Atm I'm basing my choice on the PassMark benchmarks and how much they cost. The specs on the GeForce website state that the 560 and the 660 both require 450W. Is this a good figure to base the wattage of my PSU on? If so, how do you decide? Do I really need 750W? The latest GTX 690 requires 650W. Is it a good idea to buy a 750W PSU now to future-proof myself?

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• smbclient -L host works. ping host doesn't work. What is missing

  - by DrorCohen

  I upgrade my ubuntu desktop to 13.10. When I say upgrade I mean installed on a new partition from scratch (old partition is available if To the problem: I'm trying to ping a host (Drobo-FS server) by it's netbios name. I get "Unknown Host". However running smbclient -l HostName - give me all the output in the world. Stracing the ping I can it tries to use resolv.conf (expected fail) and then when accessing mdns stuff it fails (no mdns.allow file) and exits. Here's the host line from /etc/nsswitch.conf: hosts: files wins mdns4_minimal [NOTFOUND=return] dns mdns4 I've added wins right after files (and also tried before dns. Nothing helps. Reboot after every change. What am I missing?

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• How to find the process(es) which are hogging the machine

  - by Aaron Digulla

  Scenario: All of a sudden, my computer feels sluggish. Mouse moves but windows take ages to open, etc. uptime says the load is 7.69 and raising. What is the fastest way to find out which process(es) are the cause of the load? Now, "top" and similar tools isn't the answer because they either show CPU or memory usage but not both at the same time. What I need is the single command which I might be able to type as it happens - something that will figure out any of System is trying to swap 8GB of RAM to disk because process X ... or process X seeks all over the disk or process X uses 400% CPU" So what I'm looking for is iostat, htop/atop and similar tools run into one with an output like this: 1235 cp - Disk trashing 87 chrome - Uses 2&nbsp;GB of RAM 137 nfs_bench - Uses 95% of the network bandwidth I don't want a tool that gives me some numbers which I can analyze but a tool that tells me exactly which process causes the current load. Assume that the user in front of the keyboard barely knows how to write "process", but the user is quickly overwhelmed when it comes to "resident size", "virtual memory" or "process life cycle". My argument goes like this: A user notices a problem. There can be thousands of reasons ... well, almost :-) The user wants to know the source of the problem. The current solutions give me lots of numbers, and I need to know what these numbers mean. What I'm looking for is a meta tool. 99% of the data is irrelevant to the problem. So what the tool should do is look for processes which hog some resource and list only those along with "this process needs a lot of CPU, this produces many IRQs, this process allocates a lot of RAM (and it's still growing)". This will be a relatively short list. It will be much more simple for someone new to this to locate the culprit from this list than from the output of, say, htop which gives me about 5000 numbers but requires me to fold multi-threaded processes myself (I have 50 lines which say VIRT 2750M but only 16 GB of RAM - the machine ought to swap itself to death but of course, this is a misinterpretation of the data that can happen quickly).

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• HTTP transfer speeds start fast then slows to a crawl

  - by AnITAdmin

  We just got a new dedicated 1 gigabit server running IIS. The CPU is 15% or less, the RAM (4 GB total) has 3 GB unused... We are pushing 110 mbits per second... Speeds are really slow.. And, if fact, here's how it happens: We connect, and then the speeds are really fast, and quickly decline to 40 kBps or less. What's going on? It seems the server just wont go above 120 mbits per second. The files are all very large. 50 MB to 500 MB... Could this be a factor? Again, CPU, RAM, UI responsiveness when accessing remotely all seem fine.

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• Win7 Professional x64 16GB (4.99GB usable)

  - by Killrawr

  I've installed Corsair Vengeance CMZ16GX3M2A1600C10, 2x8GB, DDR3-1600, PC3-12800, CL10, DIMM and my BIOS picks up that there is 16GB, Windows says there is 16GB, CPU-z says there is 16GB. But it only says I can use 4.99GB out of 16GB. Motherboard is P55-GD65 (MS-7583) Supports four unbuffered DIMM of 1.5 Volt DDR3 1066/1333/1600*/2000*/2133* (OC) DRAM, 16GB Max Windows (Above screenshot specifies that I am on a System type: 64-bit OS) CPU-z Microsoft says that the physical memory limit on a 64 bit win7 professional operating system is 192GB. Dxdiag Run Command BIOS Screenshot #1 BIOS Screenshot #2 Why is my OS limiting me to just over a quarter of the available memory? is there anyway to increase it?

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• How to set a low process priority for everything spawned from a command prompt in XP?

  - by Binary Worrier

  As a developer, once or twice a week I run a full build on my XP dev machine. This will run at 100% cpu for 30 or 40 minutes, making my machine usless for anything other than basic browsing & email. Is there anyway I can specify that for a given process (i.e. a command prompt) it and any process spawned by it will hae a lower priority, say taking up no more than 60 - 70% of CPU, leaving my machine more usable. I don't mind the build talking 30 or 40% longer, if I still have use of my machine while it's running. Thanks BW P.S. I'd love to be able to throw more hardware at the problem, but that isn't under my control.

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• Can a motherboard be faulty even if it's getting power and so are components hooked up to it?

  - by Davy8

  Sort of a followup to this question. The mobo's getting power, the lights are on. The GPU fan is spinning (it doesn't use auxiliary power, it's only connected to the mobo). I'm not getting any video signal, and it's not the video card (nor monitor) that's faulty, so I'm suspecting mobo or CPU (possibly RAM?) and I'm trying to pinpoint which part is at fault. Is the motherboard a candidate for being broken or is it not very likely if it's getting power and powering other components? The CPU fan is getting power as well.

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• Good Choice of Memory for Asus K52F-BBR5

  - by Christopher Painter

  I recently purchased an Asus K52F-BBR5 notebook. It's a basic laptop with an Intel P6100 CPU and Mobile Intel® HM55 Express Chipset. It came with 3GB of DDR3 SODIMM memory and I'd like to expand it to 8GB. I'm a little confused by DDR3 nomenclature and not up to date on my knowledge of chipsets. I'd like to make a good choice when selecting memory for it. Crucial's database suggests using either a PC3-8500 with CAS 7 or a PC3-10600 with a CAS of 9. Is the 8500 better because of it's CAS 7 or will my chipset run the memory async at a higher speed and get better performance? Which would be a better choice for my chipset and CPU? Price difference is negligble.

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• Server Sizing Methodology

  - by adbrpc

  Our development environment consist of JBoss 5.0.1 DB Server, SQL Server 2008, Oracle IDM. Hardware is Win 2008 32 bit, 4GB RAM. We have reached stage where our environment can not handle application resulting in JBoss shut down throwing out of memory errors and CPU reaching to 90% usage. I am looking methodology to calculate correct server sizing where I input TPS, max number of concurrent users, max CPU utilization etc.. to give me number of servers, RAM size, number of cores. I am expecting application to grow 10% annually. Load Balancer and Failover should also be taken in account while sizing.

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• Hyper-V R2 as a VM on another virtual OS

  - by Tim

  I am trying to perform Microsoft Platform testing for a vendor application. The problem I have is that it requires the test be done on Windows Server 2008 as a VM on Hyper-V R2. Currently, I have access to a virtual server with just Hyper-V and also have access to an ESXi server. The crazy idea (which may just show how little I know about how virtualization technology works) is to install Hyper-V R2 as a VM onto one of these other servers. Then create a VM for Windows Server 2008 on this Hyper-V R2 VM. I can not just upgrade the current Hyper-V server as the VMs currently running would need to be taken off-line and are system critical (and I don't have rights to perform this upgrade). Has anyone tried this? Will this even work?

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