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  • Basic C++ Speed (initialization vs adding) and comparison speed

    - by seld
    I was curious if anyone knows which of the following executes faster (I know this seems like a weird question but I'm trying to shave as much time and resources as possible off my program.) int i; i+=1; or int i; i=1; and I also was curious about which comparison is faster: //given some integer i // X is some constant i < X+1 or i<=X

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  • Is there a way to tell what the download speed is from a site/server

    - by Memor-X
    i'm looking into which ISP i should go with at the place i'm moving into, one ISP which i have been told good things about has data limits (which when breached will drop your speed to dial-up speed) but multiple memberships which, apart from the cheapest membership, have the same data limits (the cheapest has a 10GB data limit) in their fine print, they say that each different membership has different port speeds, one particular part jumps out at me These speeds are the NBN (National Broadband Network) port speed and not the actual Internet data speed which will vary based on numerous factors including destination you are reaching, your network equipment, network congestion etc. i plan to use the net to download DLC and patch updates for games (particular the insanely large update for the Wii U) and games from Steam (if i find any good one other than this one JRPG) and downloading development resources from free sites like Deposit Files and Mediafire since one membership with a 1000GB data limit is $145 with the port speed being 12Mbps/1Mbps (cheapest) while another with the same limit is $190 with the port speed of 100Mbps/40Mbps (expensive) i am wondering how i can tell what the speed coming from site is since i don't want to be wasting money on speed that makes no difference (unlike memory which i rather have to spare) NOTE: the speeds are for a fiber optic network which where my new place is can only connect via fixed wireless which i may not be able to get with this ISP but if i can get this network then good NOTE 2: most of the resources i get from Deposit Files are always about 200 MB or less, if a resource pack is greater then it's split into multiple archives (like .7z.part) while Mediafire i have to see one bigger than 150MB NOTE 3: one update patch for a PS3 game is close to 4 GB (Disgaea 4) which i need to get access to the DLC and on the weekend i downloaded 5 GB for the Final Fantasy XIV Open Beta for the PS3 which took almost 5 hours

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  • Very Slow DSL (ethernet) speed [New Interesting Update]

    - by Abhijit
    Very IMPORTANT and INTERESTING UPDATE: Due to some reason I just thought to do a complete new setup and this time I decided to again have openSUSE plus ubuntu. So I first reinstall lubuntu and then I installed OpenSUSE 12.2 (64 bit). Now, my DSL speed is working very normal and fine on opensuse. So this is very scary. Is it possible for any operating system to manipulate my NIC so that it will work fine only on that operating system and not on another os? Regarding positive thinking and not being paranoid, what is it that makes ONLY suse to get my NIC to work at normal speed but ubuntu can not do it? Not even fedora? Not even linux mint? What all these OS are lacking that enables suse to work great? == ORIGINAL QUESTION == I 'was' on opensuse 12.2 when my dsl speed was normal. Yesterday I switched from opensuse to ubuntu 12.04 and speed decreased. It came to range of 7-10-13-20-25-kbps. Then I switch to linux mint, and then to fedora. Still slow speed. When I was in ubuntu I disabled ipv6 but still no luck. Now I am in fedora but this time with DIFFERENT ISP. And still I am getting very slow sped. So my guess is this is nothing to do with os. What can be wrong? Is this problem of NIC? Does NIC speed decreases over time? Does NIC life ends over time as with keyboard or mouse? Help please All the os I used are 64 bit and my laptop is Compaq Presario A965Tu Intel Centrino DUal Core. Interesting thing to notice is I get normal speed while downloading torrent inside torrent client softwares. This slow speed issue applied to download from any web browser or installing software using terminal.

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  • Bullet Time in Real Life: Impacts Slowed Down with High Speed Cameras

    - by Jason Fitzpatrick
    Combine a little shooting range fun with a camera capable of shooting a million frames per second and you’ve got yourself the basis of pretty hypnotizing video. In the video above various rifle and handgun rounds are fired at a variety of materials–sheet metal, plate metal, gelatin–and captured in a halo of fragments and splatters. Have an equally enthralling high speed video to share? Throw a link in the comments! [via Mashable] How To Be Your Own Personal Clone Army (With a Little Photoshop) How To Properly Scan a Photograph (And Get An Even Better Image) The HTG Guide to Hiding Your Data in a TrueCrypt Hidden Volume

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  • Create speed baseline for local web file

    - by Michael Jasper
    Is there any tool or method that will load a localhost page a number of times, and return the averaged data for load times, onload events, Dom ready events, etc? I'd like to work on page speed optimization, but need a baseline before I begin. I have used both Google analytics and Webmaster tools, but I'd like an automated solutions that runs locally. My ideal solution would be a program or script that would take the path/file, number of iterations, and then take several minutes to load the page n times without cache and crunch numbers to create a baseline.

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  • Downloads speed starts ok but after a few seconds they go down to 10kbps?

    - by peterg
    Since yesterday any file I try to download from any host start downloading ok (at 1mbps) but after a few seconds the speed start to decrease down to 10kbps. I use a mobile modem (huawei) and I connect to a wcdma network. What could be happening? I use kaspersky, and I checked the Network Monitor and I don't see any weird process using bandwidth. What other tests can I run? Recommend me some app to monitor the traffic to see if I have some malware or see where my bandwidth goes.

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  • Four Great Ways to Speed Up Your Website Speed

    As a webpage developer, you should already notice that page loading time is becoming more and more important than ever before. It is quite usual that visitors will not turn away from your webpage if it cost them more than half a minute to get access to your website. What's more, the faster your pages load, the more likely the search engines will be index deeper into your websites pages and give your website a better search engine ranking.

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  • Exporting Speed Dial settings from within Firefox into Chrome Speed dial...

    - by Paul
    Win7 Home Prem 32-bit I usually use Firefox as my browser of choice and have been using the Addin Speed Dial for ages. I have many sites added on multiple tabs within it. I have just installed the Google Chrome browser which also has the Speed Dial Extension. Is there a way to export/import/copy/sync my Speed Dial settings i have in Firefox to the Speed Dial extension in Chrome? I know i can export from Speed Dial in Firefox but can't see any easy way to import from Speed Dial in Chrome.

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  • Why has my internet speed dropped down?

    - by Door Knob
    I recently switched to Ubuntu. I've been having a lot of internet troubles ever since. I used Windows 7 before. I've had trouble loading web pages, and it would take a solid minute or two to even start displaying anything. Why is this? How can I fix this? Details: Ubuntu 14.04 ifconfig: eth0 Link encap:Ethernet HWaddr f0:4d:a2:2c:59:42 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:21 Memory:f7ae0000-f7b00000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU:65536 Metric:1 RX packets:785 errors:0 dropped:0 overruns:0 frame:0 TX packets:785 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:70511 (70.5 KB) TX bytes:70511 (70.5 KB) wlan0 Link encap:Ethernet HWaddr 14:da:e9:b0:9d:66 inet addr:192.168.2.12 Bcast:192.168.2.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:11979 errors:0 dropped:0 overruns:0 frame:0 TX packets:10503 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:13659505 (13.6 MB) TX bytes:1449698 (1.4 MB) Here's a comparison: Speedtest on my phone: Speedtest on my PC: Taken about 30 seconds apart.

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  • Download resume support blocked by isp?

    - by John Doe
    Can ISP block resume support for downloads ? I'm using IDM (internet download manager) to download of the internet from resume supported websites, yet I am unable to resume downloads. I tried different computers with the same result. Turned off firewall, didn't have any effect i was able to download with no issues until a couple of days ago. Another thing i noticed is that before IDM used to try to connect to several connections to speed up my download, but now it can only connect to one connection. Also i tried to download using my vpn, and i was able to download and resume downloads with no problem.

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  • Download rates of torrents through µTorrent and FlashGet are suddenly limited

    - by el
    Both µTorrent and FlashGet are being throttled and I don't know why or how. I use both and they usually report a download speed of 70kbps for torrent speed. FlashGet would report a speed of 70kbps yet actually download at another speed which is about the same as the actual which is a consisten 70kbps. Now, all of a sudden, my torrent downloads are only up to 20kbps. FlashGet still shows a reading of 70kbps, maybe even 80kbps. But, the average actual speed of download is really only 20kbps. I am using Windows 7 on my laptop and no matter where the internet is coming it's the same thing. I have no idea what could be limiting my download rates.

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  • Download rates of torrents through µTorrent and FlashGot are suddenly limited

    - by el
    Both µTorrent and FlashGot are being throttled and I don't know why or how. I use both and they usually report a download speed of 70kbps for torrent speed. FlashGot would report a speed of 70kbps yet actually download at another speed which is about the same as the actual which is a consistent 70kbps. Now, all of a sudden, my torrent downloads are only up to 20kbps. FlashGot still shows a reading of 70kbps, maybe even 80kbps. But, the average actual speed of download is really only 20kbps. I am using Windows 7 on my laptop and no matter where the internet is coming it's the same thing. I have no idea what could be limiting my download rates.

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  • Static file download from browser breaking in varnish but works fine in Apache

    - by Ron
    I would at first like to thank everyone at serverfault for this great website and I also come to this site while searching in google for various server related issues and setups. I also have an issue today and so I am posting here and hope that the seniors would help me out. I had setup a website on a dedicated server a few days ago and I used Varnish 3 as the frontend to Apache2 on a Debian Lenny server as the traffic was a bit high. There are several static file downloads of around 10-20 MB in size in the website. The website looked fine in the last few days after I setup. I was checking from a 5mbps + broadband connection and the file downloads were also completed in seconds and working fine. But today I realized that on a slow internet connection the file downloads were breaking off. When I tried to download the files from the website using a browser then it broke off after a minute or so. It kept on happening again and again and so it had nothing to do with the internet connection. The internet connection was around 512 kbps and so it was not dial up level speed too but decent speed where files should easily download though not that fast. Then I thought of trying out with the apache backend port and used the port number to check out if the problem occurs. But then on adding the apache port in the static file download url, the files got downloaded easily and did not break even once. I tried it several times to make sure that it was not a coincidence but every time I was using the apache port in the file download url then it was downloading fine while it was breaking each time with the normal link which was routed through Varnish I suppose. So, it seems Varnish has somehow resulted in the broken file downloads. Could anyone give any idea as to why it is happening and how to fix the problem. For more clarification, take this example: Apache backend set on port 8008, Varnish frontend set on port 80 Now when I download say http://mywebsite.com/directory/filename.extension Then the download breaks off after a minute or so. I cannot be sure it is due to the time or size though and I am just assuming. May be some other reason too. But when I download using: http://mywebsite.com:8008/directory/filename.extension Then the file download does not break at all and it gets download fine. So, it seems that varnish is somehow creating the file download breaking and not apache. Does anybody have any idea as to why it is happening and how can it be fixed. Any help would be highly appreciated. And my varnish default.vcl is backend apache { set backend.host = "127.0.0.1"; set backend.port = "8008"; } sub vcl_deliver { remove resp.http.X-Varnish; remove resp.http.Via; remove resp.http.Age; remove resp.http.Server; remove resp.http.X-Powered-By; }

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  • Resuming downloads in Firefox

    - by Kim
    Unfortunately, Firefox still has failed to add the option to resume downloads. I've ran into this problem SO MANY times, and in my previous searches I found posts saying Firefox was going to fix that. As of 3.6.3 they haven't. I just tried Free Download Manager (FDM), again, having the Firefox addon Flashgot use it. The download gets passed to FDM, and fails, giving the error message "access denied, invalid username or password." No password was required. The site I'm trying to get the file from is turbobit.net, which limits downloads speeds to 100kb/sec, and has a 59 second countdown before you get the link. I guess it's transparently using a password on their end. If I just download normally (save to disk) the download starts fine, but it fails after 30 minutes to 1 hour (always different), and my Wi-fi connection will stop briefly - and I have to start all over. So I will never be able to download a large file. I also tried DTA instead of FMD with Flashgot, and I get an "access denied" message in DTA. Again, I reloaded - waited the 59 seconds, and download w/Firefox, and the download starts fine. The failure message in the Firefox Downloads window is "source file at http... could not be read." Any help would be greatly appreciated. When is Firefox going to finally add the ability to resume downloads????? Is there some other software I haven't found using Google that will work?

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  • Limit download usage for clients

    - by Kumar P
    i am maintaining few windows xp machines under rhel 5 . i want to set quota for download file size. How to do it ? I mean, in lan usar A's maximum donload file size is 300 MB , and user B's maximum download file size in 200 MB. I want to block downloading when user try to download more than 300 MB file.User should not allow to download 300MB file at a time. Or how to set quota for maximum download per day, is there possible to do it ? How can i do this ?

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  • Disable Ethernet permanently to speed up boot time

    - by Anwar Shah
    I do not use the wired Ethernet Card. It seems to me that, Ubuntu is always trying in boot time to check the network via eth0, Which consumes some times and I guess this may slow down the boot process a bit. My dmesg output is below (partial) 2012-06-11 23:06:47 Ubuntu-KDE kernel [ 1.985592] input: Video Bus as /devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:01/input/input5 2012-06-11 23:06:47 Ubuntu-KDE kernel [ 1.985651] ACPI: Video Device [GFX0] (multi-head: yes rom: no post: no) 2012-06-11 23:06:47 Ubuntu-KDE kernel [ 1.985693] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0 2012-06-11 23:06:47 Ubuntu-KDE kernel [ 2.056261] firewire_core: created device fw0: GUID 00023f87af41fd7d, S400 2012-06-11 23:06:47 Ubuntu-KDE kernel [ 3.710435] EXT4-fs (sda9): mounted filesystem with ordered data mode. Opts: (null) A big time here..... 2012-06-11 23:06:47 Ubuntu-KDE kernel [ 13.466642] ADDRCONF(NETDEV_UP): eth0: link is not ready 2012-06-11 23:06:47 Ubuntu-KDE kernel [ 14.125296] Adding 1050620k swap on /dev/sda6. Priority:-1 extents:1 across:1050620k 2012-06-11 23:06:47 Ubuntu-KDE kernel [ 14.226952] EXT4-fs (sda9): re-mounted. Opts: (null) 2012-06-11 23:06:47 Ubuntu-KDE kernel [ 14.335012] snd_hda_intel 0000:00:1b.0: PCI INT A - GSI 22 (level, low) - IRQ 22 2012-06-11 23:06:47 Ubuntu-KDE kernel [ 14.335091] snd_hda_intel 0000:00:1b.0: irq 45 for MSI/MSI-X 2012-06-11 23:06:47 Ubuntu-KDE kernel [ 14.335128] snd_hda_intel 0000:00:1b.0: setting latency timer to 64 2012-06-11 23:06:47 Ubuntu-KDE kernel [ 14.346410] input: Ideapad extra buttons as /devices/platform/ideapad/input/input6 2012-06-11 23:06:47 Ubuntu-KDE kernel [ 14.428551] input: HDA Intel Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input7 2012-06-11 23:06:47 Ubuntu-KDE kernel [ 14.436958] cfg80211: Calling CRDA to update world regulatory domain 2012-06-11 23:06:47 Ubuntu-KDE kernel [ 14.476550] Linux video capture interface: v2.00 2012-06-11 23:06:47 Ubuntu-KDE kernel [ 14.486385] uvcvideo: Found UVC 1.00 device USB 2.0 Camera (04f2:b008) So, My question is How can I disable the Ethernet card completely, so that kernel will not try to use that?

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  • Very Slow DSL (ethernet) speed

    - by Abhijit
    I 'was' on opensuse 12.2 when my dsl speed was normal. Yesterday I switched from opensuse to ubuntu 12.04 and speed decreased. It came to range of 7-10-13-20-25-kbps. Then I switch to linux mint, and then to fedora. Still slow speed. When I was in ubuntu I disabled ipv6 but still no luck. Now I am in fedora but this time with DIFFERENT ISP. And still I am getting very slow sped. So my guess is this is nothing to do with os. What can be wrong? Is this problem of NIC? Does NIC speed decreases over time? Does NIC life ends over time as with keyboard or mouse? Help please All the os I used are 64 bit and my laptop is Compaq Presario A965Tu Intel Centrino DUal Core. Interesting thing to notice is I get normal speed while downloading torrent inside torrent client softwares. This slow speed issue applied to download from any web browser or installing software using terminal.

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  • Does Google include the time to load images, for a single page, as part of the page speed?

    - by Pure.Krome
    we all know that Google's affects your page rank with the load time of a page. How? That's part of the secret sauce. But we know that page speed is a serious factor. So - what is considered the speed of a page? Is it just the first (and main) html file which the GET receives? Or does it also include loading of images as part of that speed. so for example... GET /index.htm <- takes 0.45 seconds to retrieve (including DNS lookup before). robot parses page.. see's there's a single main image.... GET /img/main.png <- takes 5 seconds to download. is the page speed for that resource, 0.45 seconds OR 5.45 seconds? I understand Javascript is not fired .. but are any of these external resources all downloaded and part of the page speed?

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  • IE8 Download's Writing to C:\?

    - by Dana
    Every time I download something using IE8 (running on Win 7) I get asked where to save the file, I choose my downloads folder, then the download continues and when complete I get the following message: "C:\ is not accessible. Access Denied." And I so I can't access any files I download. So why on earth would IE8 be trying to write to the root, and where can I change this? I've checked the cache folder location and it's correct. Dana

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  • Download all the links from a website at once [closed]

    - by user216112
    Possible Duplicate: How can I download an entire website Is there any software that allows you to download all the links of a website at once? E.g.: I'm using the w3school.com site and want to download all the PHP tutorials at once. Someone told me "tglepote".bt I have no idea what it is and Google returns me with nothing.

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  • One time torrent download

    - by joaoc
    I know about bittorrent but have never used it since it tends to be mostly used for illegal download of movies and software. Typically whenever I see a legitimate use for it (Linux distros) there is also a regular download option so I haven't had the need for a client until today. There is a large (500Mb) file I want to download that appears to only be accessible via bit torrent. For a one time use, is there an online resource that converts the torrent to a normal http no-special-client-software download? If not, what is an easy to use and light client to install/uninstall on WinXP for a one time use?

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  • download/export emails from webmail

    - by misterjinx
    hello, I'm just switching my hosts and I want to move the emails from my accounts too. In order to have my current emails on the new host I want to download/export them and to import at the other host. In order to do this I use one of the webmail (squirrelmail, roundcube, horde) clients available on my current host. The problem is that except for roundcube, I don't see any download/export option available. And in roundcube I can only select one email at a time and download it as eml. My question is how do I export/download all the emails from one account and import them at the new host? I know this is possible because I remember doing this some time ago using squirrelmail, but I can't find anything related to this now. Thank you.

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  • File sometimes doesn't download from my website

    - by kylex
    When I attempt to download this file, sometimes it only downloads about 700KB (the file is 40MB) then I get the message that the download is complete. If I try to download the file again, it works properly. The problem seems prevalent in IE, although I've had it happen in Chrome sometimes too. I have the following code: <input type="button" value="Agree to Terms and Download" onClick="location.href='/downloads/setup.exe';" /> If it matters, this is over a secure connection. I also tried zipping the file, and had the same issues.

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  • Cannot download Microsoft Project 2010 demo videos

    - by Nam Gi VU
    Hi everyone, I need to download the demo videos at my office so that I can view it later at home since I have slow internet connection there but it seems to be no way to download the videos at [the site][1], and other resources in this site. Using some of the firefox addons to download them is not possible. Do you have any tips for me? Please share. [1]: http://www.microsoft.com/showcase/en/US/search?phrase="project conference 2009"

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