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• What is the easiest way to do a direct file transfer of an extremely large file over the Internet?

  - by Kenneth Cochran

  I would like to transfer a 20+ GB file to a friend. I would like it to: Be fast Ensure data integrity Not require opening ports in either end's firewall Be free Not broadcast the file's existence to everyone on the Internet I've looked a several technologies and nothing seems to fit: Gnutella, BitTorrent, et al. satisfies 1, 2 and 4 JetBytes... 1, 3, 4 and 5 Yahoo Messenger, AIM, etc. 3, 4 and 5 FTP, SFTP... 1?, 4 and 5 rsync... 1, 2, 4 and 5 For a file this size speed and data integrity are the most important. No one wants a 20 GB file to fail a MD5 check after spending two days downloading it. Is there anything that meets all these requirements?

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• is there a way to prespecify to overwrite files with same name?

  - by Celeritas

  Connections to network drives are ridiculously slow (e.g. 15kb/sec on really good days) and when I'm copying files I leave my desk. My problem is when there is a file with the same name to be overwritten, is there a way to specify in advanced to overwrite files? I know it has the option "do same for next x conflicts" but that doesn't popup until (in some cases) a long time after the files start copying. See my dilemma? Example: copying 500 files, estimated time 2 hours, I leave, after 10 minutes message comes up about file with same name and asks if it should overwrite (in this time copying stalls), I come back 30 minutes latter to find only the files in the 10 minutes copied. Out of curiosity how could the network speed be so bad? I asked the boss and he said because it gets routed around a lot and is just bad :(

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• How can I simulate a slow machine in a VM?

  - by Nathan Long

  I'm testing an AJAX-heavy web-application. I develop on a new Mac, but I use VmWare Fusion (currently 3.1.2) to test in Windows XP, using IETester to simulate older versions of IE. This lets me see how older IE versions would render the site, but I'd also like to see how the site would perform on an older machine. I see in the VM's settings that I can decrease the RAM; is there a way to also dial down the processor speed? How else might I simulate a slow machine? (I am also going to check out how to simulate a slow internet connection.)

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• Colored PS1 string

  - by Will Vousden

  Clarification: I want __foo to be executed each time the PS1 string is presented in the terminal, not when the PS1 string is constructed (hence its being in quotes). __foo contains logic that examines the current directory, so its execution must be deferred. I'm trying to use different colours in my Bash PS1 string from within a Bash function: LIGHTRED="\033[1;31m" LIGHTGREEN="\033[1;32m" RESET="\033[m" __foo () { # Do some stuff and genereate a string to echo in different colours: echo -n '\['$1'\]firstcolour \['$2'\]secondcolour' } PS1='$(__foo '$LIGHTRED' '$LIGHTGREEN')\['$RESET'\] \$' Essentially I want __foo to generate part of the PS1 in a bunch of different colours. My attempt doesn't seem to work, though; it produces the following output: -bash: 31m: command not found -bash: 32m: command not found \[]firstcolour \[\]secondcolour $ What gives, and how can I fix it?

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• Is SCCM overkill for medium-sized organizations?

  - by Le_Quack

  I am an IT technician in a high school with around 1600 students 250 staff and 800+ client computers mostly running Windows 7. Our team is composed of three members. My boss seems content with a network that works (just about) not necessarily a productive well maintained network that is easy to run and maintain. I'm still fairly early on in my I.T. career so I'm not up to speed on all the different endpoint management solutions that are available. I'm looking for a better way to manage clients (deploy software, track changes, inventory etc) I like the look of SCCM 2012's features but the case studies seem to be aimed at large multi-site infrastructural rather than a single mid sized site. Is SCCM suitable for a mid sized single site or is it aimed at much larger corporations? How can I determine whether or not an endpoint management solution like SCCM is a good fit for our organization? EDIT: Thanks for all the help I'll take a look at SCE and SCCM and get some proposals drawn up to take to my boss/deputy head

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• How to configure an ASUS motherboard.

  - by Absolute0

  I have an ASUS P7P55-M motherboard running with an Intel Core i5-750 processor and 4 GB RAM with 1600 MT/s speed. For some reason the default settings of the motherboard make all the components run at half their optimums. I have switched to the "D.O.C.P." profile and supposedly everything is as it's supposed to be (verified with CPU-Z). There is also an "X.M.P." profile and a manual one. Are either of the DOCP or XMP safe to go with? I wouldn't use the manual mode as I would likely mess something up real bad. XMP seems to be more memory oriented.

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• What is the fastest CPU my laptop can support?

  - by Dave

  I have a Dell Latitude D830 laptop and would like to speed up compile times on it. I have confirmed that it is, indeed, the processor time that is the bottleneck. How can I tell what processors are compatible with the motherboard to pick the best available? I run dual boot Ubuntu Maverick and Windows 7. lshw tells me that my motherboard is OHN338 from Dell, Inc. If anyone has a generic solution, i.e. "For motherboard X, here is how you find out what processors are supported," that would be make this question much more useful to future visitors. But if you also know of a way to find out specific to my model, that would be great as well.

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• A space-efficient guest filesystem for grow-as-needed virtual disks ?

  - by Steve Schnepp

  A common practice is to use non-preallocated virtual disks. Since they only grow as needed, it makes them perfect for fast backup, overallocation and creation speed. Since file systems are usually based on physical disks they have the tendency to use the whole area available1 in order to increase the speed2 or reliability3. I'm searching a filesystem that does the exact opposite : try to touch the minimum blocks need by an aggressive block reuse. I would happily trade some performance for space usage. There is already a similar question, but it is rather general. I have very specific goal : space-efficiency. 1. Like page caching uses all the free physical memory 2. Canonical example : online defragmentation 3. Canonical example : snapshotting

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• Why does PsExec hang after successfully running a powershell script?

  - by Matt

  The script is fairly straight forward. Simply tries to start a bunch of windows services. Execution locally works fine when on the target machine. The script is actually executing fine as well when done via PsExec, it just never returns until I hit the "enter" key on my CMD prompt. This is a problem, because this is being called from TeamCity, and it makes the Agent hang waiting for PsExec to return. I've tried the following: Adding an exit and exit 0 at the end of the Powershell script Adding a < NUL to the end of the PsExec call, per the answer in this SF question Adding a > stdout redirect This is how I am actually calling psexec: psexec \\target -u domain\username -p password powershell c:\path\script.ps1 No matter what I do, it hangs until I the locally on the cmd prompt. After I hit enter, I get the message: powershell exited on target with error code 0.

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• Decent 1gb switch (16-24 port) for rack...

  - by TomTom

  Hallo, for a rack containing a smaller nubmer of servers (5 at the moment, going to stay in this area), I look to replace the currently aging 100mbit switch with a 1gb switch. This is for the backend between the servers. I expect some ISCIS traffic there ,so a 10gbit option would be nice (preferably for two ports, as extension modules). I dont need management, this is a pure backend of an internal cluster. I do VLAN, but there is no sensible management the switch can do there. I wuold like: * 1he only, obviously * preferable limited moving parts. * Low price ;) * Enough power to run at least half the ports in full speed at the same time. Anyone any recommendations?

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• Will I have internet connection issues next day, if I unplug router at night?

  - by headskracher77

  I did this regularly a few years ago and used to feel like I was 'being punished' by the Interent svc provider for disabling access to my computer, because trying to re-connect the next day became a constant pain. I have the same linksys router, a comcast modem, and hi-speed broadband through their LAN. Question: who or what is at fault for lousy internet connections, slow connections, or no connections: (everybody's tech dept. blames everybody else) The router? 10 year olds, maybe obsolete? The modem? came with the service plan - can connect three devices on a sharedconnection. The ISP: I read they not only even control and completely regulate bandwidth usage, but they also ration it!! (true?) So can I safely 'pull the plug' each night for security or not? thnx

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• Uploading with browser makes all other browser tabs and devices disconnect

  - by fabsenet

  Whenever I upload a video to YouTube all other browser tabs behave like there is no connection at all. It even affects my phone and other computers on the network therefor I think it has to do with my router. When the upload is done everything works normally again. I never observed this behavior with any other upload. My router is a Fritz!Box 7390 and my uploading PC is connected through a 1000mb/s switch (wired) to the router. Uploading through another browser does not change anything. I understand that other sites become slow as the network resources are limited, but stopping altogether feels wrong. speed.io measures for my internet connection: 40.894 Kbit/s down, 2.685 Kbit/s up, 29 ms ping, 2.048 con/m connects

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• Where should I plug in my monitor -- Motherboard or Graphics card?

  - by Jeremy White

  Assuming I am using the following equipment... motherboard with HDMI/DVI & no embedded graphics discrete graphics card (nVidia or ATI) on PCI-E slot Intel CPU with integrated graphics ...where should I plug my monitor into the computer? Presumably, I'll get the fastest speed on games connected directly to the graphics card. But there is also power savings when connecting to the motherboard and accessing the Intel on-board graphics. I've read that some motherboards can switch automatically between the Intel graphics and discrete graphics. Is that something that works well, and where do I connect the monitor to enable that?

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• Looking for internet traffic manager software for Windows 7

  - by Semyon Perepelitsa

  I have 128 KB/s (1 Mbit/s) internet connection. Not quite fast for downloading big files, but it is okay for internet browsing. When I start big file dowload, I cannot surf the web normally: pages appears slowly, especially pictures there. Therefore I pause downloading, but I'm regularly spending much time on reading articles or leaving the computer alone, when I can allow the file being dowloaded. Is there any software that can automize the process of pausing and resuming download or simply automatically regulate internet speed for each application using Internet? I download files using different software and protocols (Download Master for http, ftp; uTorrent for torrents; many other programs for updating themselves), so I don't want to be tied to particular program for downloading.

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• 10 System LAN latency with ADSL modem as gateway

  - by itsoft3g

  Recently I expanded LAN in my office from 3 to 10 computers. Structure star topology, one ADSL Modem connected to One Switch which is again connected to 10 computers. Also we have Wifi device Netgear which is connected from switch. ADSL Modem acts as the DHCP Server, all the system will have default gateway IP (ADSL Modem's IP) Network latency is now become very high, All the chat severs disconnect often like google talk, skype etc, also internet become very very slow. when all the computer turned on. We have 4 Mbps Download and 100 Kbps upload Net speed. Its look like ADSL Modem cannot able to handle all the connections. I tried to setup a system as default gateway which will connect to modem, not sure how to do this. Please advice on this.

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• Grep all files in a directory and print matches with file name

  - by javanix

  I have a list of log files that I create as part of a video encoding script that I wrote. I would like to search all of them and print out certain statistics from the encode - how fast they were encoded, what settings were used, etc. I can search for the average framerate in one file via this 1 liner: cat ${filename} | grep average which outputs: work: average encoding speed for job is 23.211176 fps and search for the ratefactor: cat ${filename} | grep RF I would like to search all files in the directory and print off one, or prefereably both pieces of information along with the filename. Is there any way I can use find or grep to get this in a one-liner, or do I need to write a script? I would like output like this: /home/javanix/filename.log <RF line> <average line> I would like this to either work using FreeBSD 9 or Ubuntu 12.04.

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• Is there a faster way to deploy an OVA template?

  - by Luke

  I need to deploy vSphere Server Appliance 5.1. I have vSphere Client running locally and my internet upload is capped at 3 Mbps. It says it's going to take about 200 minutes to upload. When selecting a URL as opposed to a local file, does vSphere Client download it locally and then upload, or does it download the OVA directly to the server? My goal is to avoid waiting 3 1/2 hours for this to upload. If specifying a URL isn't any faster, are there any other methods that would allow me to deploy from the datacenter instead of my office? We don't have any Windows VM's installed on our cluster. So unfortunately I don't have a Windows machine with faster upload speed.

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• Site-to-site VPN

  - by ronadona

  We are a small business company that is based in Sydney and opened a new office in London. Number of employees in Sydney office is 25 and in London is 6 employees. So the traffic isn't that high. Files to be transferred are Excel sheets with size of 15mb max. Both locations have MS server 2008 and Fortigate gateways. I set up a site to site vpn but it's extremely slow. Maybe this is because our upload speeds is 1Mbps only but We will increase the upload speed to 20 Mbps in both locations but I am afraid that this will not solve the problem as the 2 locations are far from each other and the upload upgrade won't solve the problem. what's the best way to go? Shall we find a provider for the VPN? or is there another technology that can be used through internet without paying extra costs? Many thanks!

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• GPU Computing - # of GPUs supported

  - by TehTypoKing

  I currently have a desktop with 6 GPUs ( 3x HD 5970s ) in non-crossfire mode. Unfortunately, it seems that Windows 7 64bit only supports up to 4 GPUs. I have not been able to find a reliable source to deny or confirm this. If windows 7 has this limitation, is there a Linux flavor that supports more than 4 GPUs? In-case you are wondering, this is not for gaming but high-speed single precision computing. With this current setup ( if I can find 6gpu support ) I am looking to reach 13.8 Teraflops. Also, my motherboard does support 3 16x pci-xpress gen2 slots... and I have a 1500w powersupply plugged into a 20amp outlet. Windows is able to detect all 6 cores.. although, 2 of which displays the warning "Drivers failed to load". To recap: - Can windows support 6 GPUs? - If not, does Linux? Thank you.

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• What is the best filesystem for storing thousands of files in one dictionary-like id-blob structure?

  - by Ivan

  What filesystem best suits my needs? Thousands or even millions of files in one directory. Good (ext4 & ntfs level or close) reliability (incl. fault tolerance) and access speed. No directories actually needed, as well as descriptive names, just a dictionary-like structure of id-blob pairs is all I need. No links, attributes, and access control features needed. The purpose is a file storage where all the metadata (data describing all the facts about what the file actually contains and who can access it) is stored in a MySQL database. As far as I know common filesystems like NTFS and ext3/4 can go dead-slow if there are too many files placed in one directory - that's why I ask.

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• How can I combine non-identical disks efficiently?

  - by Odys

  There are some not-identical disk of various capacities that I want to combine (somehow). Since there are no duplicate models, I can't use raid between none of them. Is there a way to use them efficiently while being safe? What I have in mind is a software that will use them as if it were Raid-5 or something. I really don't care about max speed. I want in the end to have as less logical drives as possible. Also, I don't mind spending some money on hardware, if needed.

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• How to reinstall OS X 10.8 without internet?

  - by Sam

  I had a crash on my Macbook Air MD231 - Mid 2012, and my system won't boot, and unfortunately my friend erase my partition from disk utility. Now I have three question 1)my internet speed is very low, for re-installing I have to download all of the OS X 10.8 from internet? or I can download it and install it via USB port?(how??) 2)I have to select this option ? "re-install OS X" , and what about size of that? (for example 4.2 Gb) 3)after installing , is there anyway to restore my dada? unfortunately I have not any backup right now, after I turning my Mac on, it's automatically going to repair mode... thnx for your kind

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• What is the computer "doing" when it is running slow and task manager is not showing any CPU activity?

  - by Joakim Tall

  Typical example is when shutting down a memoryintensive application. It can take quite a while before the computer gets back up to speed. Is there some inherent cost in releasing memory? Or is it throttled by some kind of harddrive activity, and if so is there any good way to track that? I usually bring up task manager when a computer is running slow, and usually sorting by cpu activity can show what process is causing the problem, but sometimes there is no activity showing. And yes I "show processes from all users", I have been wondering this since the days win2k :)

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• Extracting streaming video from swf

  - by user1018733

  I am trying to speed up this video by 1.25x to 1.5x, udacity style. I tried grabbing the http://smart.if.uidaho.edu/courses/f2012/cs512/ using the Download Flash & Video Firefox plugin, but it only grabbed the swf player that streams the video. Is there any other way to download this video? (as well as future videos). As a final solution, I can use video capture software while I'm not using the computer, but I don't want that hassle and time delay if possible.

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• application that could track amount of downloads

  - by user23950

  My ISP only limits me for downloading about 25gb a month. After exceeding the limit, my speed goes down by half for another month. And its really a pain. I'm real addicted on downloading stuff from the internet. My question is: Is there an application that can track the amount/size of downloads in a month. Is there a trick that I could use to fool the eyes of my ISP. If they say 25 Gb limit in a month. Does it include the webpages, manga streams, video & audio streams. Or just direct download and p2p.

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