Graphite: slow, slower...Is it dying?

I'm having most of the time a very slow internet connection. I'm pretty sure the problem lies within the Wireless network, since when I hook up the computer directly to the DSL-modem, the speed is great. Sometimes, the speed can get very good over AirPort, bit it never lasts very long. Restarting the ABS seems to help for a while, but the speed slows dramatically as I move a little away from the ABS. I'm the latest software and firmware, is my AirPort dying? Would a new AirPort Express have a better range than my ABS bought back in 2000?

11Mbps is the max raw link speed (at the physical access layer.) However, there are various overheads associated with actually framing the "user" data (e.g. file data for ftp, http data for web stuff, etc.) for transmission and also the contention resolution mechanism for the wireless broadcast medium to handle multiple users trying to access the airwaves at the same time. This means that the actual usable link capacity is always lower than the raw link speed.
The same is true for wired ethernet at 100Mbps, you'll easily get 10Mbps as a single user - but you'll max out at some point much less than 100Mbps and of course if there are multiple users on the same segment the throughput can drop dramatically because of contention.
So if you do want wireless at actual 10Mbps user data throughput you'll certainly need to go to 802.11g or above.
Sorry to disappoint, but b just won't cut it if that is what you are after.

Similar Messages

  • Graphite slows down then speeds up

    My graphite BS (one of the very first ones) has worked great for many years. Recently, in the past month or two it has started being very very slow then going back to normal speeds then slowing down. It seems to be random--I see no patterns as to time of day, number or types of machines connected, sites being browsed, or anything else. The signal strength is always maxed out, so it's not that. If it just never connected, I would say it's done for, but sometimes it's very fast, sometimes painfully slow. Can it be slowly dying?

    I have a snow ABS, but I'm experiencing the same issue. It's worked fine for years but now here recently my internet speeds are tanking. I have a 5 Mbps cable modem but repeated bandwidth tests show that I'm getting 500 Kbps speeds or less on my PowerBook G4 1.33 Ghz. This isn't a Leopard issue because I'm still running Tiger on my iMac G4 which is plugged directly into the ABS and I get similar speeds with that. I also don't think it's a connectivity issue because I have a strong signal (3 bars usually, 4 bars sometimes) on the PowerBook, and as I said the iMac is plugged directly in. Now when I plug the cable modem directly into the iMac and run the same bandwidth test I get speeds in the 4.3 Mbps or more range.
    I'd love for there to be some setting I could tweak to restore my speeds to their usual level. Any help would be appreciated. If not, I may have to break down and cop a new ABS. Probably will go for the Airport Extreme even though my PowerBook can't take advantage of the 802.11n speeds. I also have an Airport Express on the network for iTunes streaming to my stereo and it can only do 802.11g. I thought about getting another one to replace the ABS but I can't plug the old iMac directly into it. So I would have to pop in an 802.11b card to get it on the network and that would really kill the overall network speed. So an Airport Extreme should give me 802.11g speeds with my setup, and then if I ever upgrade to a MacBook Pro ... and if Apple ever releases an Airport Express that supports 802.11n I would be in a position to get top speeds. My only concern is will I fork over $180 for an Airport Extreme only to find that it gives me dismal internet speeds as well? I hope the problem is that my ABS is just old and starting to wear out. It has been running constantly for years. But could it be something else that a new Airport Extreme won't address?
    OAW

  • Song just slowed down and died - can't reboot, can't charge...

    Ipod is dead - while playing, the song just slowed down completely, warped like a dying cassette tape player, and then froze. Nothing on screen. Tried to recharge - pc doesnt' recognize, no icon on ipod, rebooting many times doesn't work.
    Is there any hope? Is this symptomatic of a dead-in-the-water battery or a shot disk drive? I'm traveling in India for another month so can't send in for service until I return to US...any advice or insight would be greatly appreciated.
    Thanks!
    Ipod 5th Gen Video 30G Windows XP
    Ipod 5th Gen Video 30G Windows XP
    Ipod 5th Gen Video 30G   Windows XP  

    Have you tryed Charging the device for atleast 20min since this problem?
    If yes,
    Try to Press and hold the Sleep/Wake button and the Home button at the same time for at least ten seconds.
    If the device still does not respond. You should try to restore the phone.
    Connect the device to your computer and open iTunes.
    If the device appears in iTunes, select and click Restore on the Summary pane.
    If the device doesn't appear in iTunes, try to force device into recovery mode.
    http://support.apple.com/kb/HT1414
    http://support.apple.com/kb/TS3281
    (Or you could try going to your closest apple store)

  • When i select text tool the PCS come slow

    hi all i just purchase the photoshop CS 5.1  and it is work fine with every thing just when i select the text tool the photoshop become very very slow and almost die
    i try to install it again but the same problem 
    any help for this please

    This usually means that you have some corrupt fonts, or that the OS font cache is corrupt.
    See http://kb2.adobe.com/cps/843/cpsid_84363.html

  • MacBook Air vs Pro

    I need to buy a laptop for Sixth Form and I wish to buy a MacBook. I'm into design and programming and wish to continue these as my career. I currently have a 21.5" Late 2011 iMac as my main computer which I do all my work on but since I am going to Sixth Form I am in need of a laptop.
    I will be doing assigments and documents, programming (since I will be taking computer as a subject) and everyday tasks. I would also like to use Photoshop and some video editing. I do not need very powerful hardware due to the fact that I can do tasks that require power on my iMac.
    I'm not sure whether to go for the 13" MacBook Air (1.3GHz Dual-core i5,128GB SSD, 8GB RAM) at £1029 or the 13" MacBook Pro (2.5GHz Dual-core i5, 500GB HDD, 8GB RAM) at £1079
    Is there a huge difference in wieght since that matters quite a bit to me because I will be carrying it around and it will also sit near my iMac at home.

    Lemonny wrote:
    #1 My question: Is MBP still portable? Portable as in being able to bring it to almost everywhere just like i do with my iPad?
    Yes, as long as it's not the 17" model. But none of them are as portable as an iPad, but that's the tradeoff between a tablet and notebook.
    #2 MY QUESTION: Can MBA still support iMovie or Photoshop?
    Yes, definatley imovie and also PS depending on the specs of the MBA.
    #3 My question: Is 128GB of storage enough for average user?
    Define your intended use and I can tell you.  Ones's idea of an average user can vary greatly.
    #4 MY Question: Will MBA last at least 5 years before slowing down and "dying"?
    No one can predict how long an electronic device can last.  Some will crap out after a few years, some will last 10+ years.
    I prefer a MBP because the ram is expandable unlike in the MBA, where the ram is soldered to the logic board and is not upgradeable.  Also, I prefer having an optical drive at all times without having to carry one around.

  • Trackpad Error Mac Pro 2015

    This is my new Mac Pro. But it has error Trackpad accidentally. I don't know why and how. I already check all the points in system preference. But it still doesn't work on swiping, launchpad, zoom and other things. It can be moved, but not smooth. What should i do?

    A MOTor (probably a fan motor) has slowed down or died in the CPU and MEMory section of your Mac.
    These fan motors feature an RPM-out indicator that the Mac can read to get a rough idea of how fast the fan motor is spinning. If not fast enough, you get an error in the diagnostic.
    You need Service. They will probably need to replace that fan motor.

  • IPhoto can not connect to iCloud

    OS X: 10.9.5
    iPhoto version 9.5.1
    My iPhoto works very well before I chose to connect to iCloud to download/share my photos.
    Once I chose the option connect to iCloud, my iPhoto worked extremly slow, even a dying status. Then I can't chose any options through iPhoto.
    I must force to close the iPhoto option in iCloud setting.
    I have tried to rebuild or repair my library, it still  didn't work.
    I have enough hard disk space for my iPhoto running.
    I have delete the file "com.apple.iphoto.plist" and restart iPhoto, it didn't work.
    So, now, I can use iPhoto  to view and edit my photos, but not connecting to iCloud to share my photos with my iPhone.
    Hope anyone can help. Thank you! 

    Try this. Using Safari go to iCloud.com. Tap the URL field. Pull Favorites down and tap request desktop site. Sign in to your iCloud account.

  • Movies Quitting Back to Video Menu

    I was watching a movie on my iPod Touch and it randomly reset the entire iPod. Strange, I watched the video again - and it started to lose sound and the frame rate slowed, then it died - exactly at the same time frame. I've yet to try other video files, but searching the forum here it seems that I have not been alone with this issue.
    Has there been a solution to this? Thanks

    Since I guess there's a problem viewing the screen shots, the full screen shots can be found at
    http://haircuttingfun.com/tmp/escape_dvd/full_project.jpg
    http://haircuttingfun.com/tmp/escape_dvd/flowcart1.jpg
    http://haircuttingfun.com/tmp/escape_dvd/flowcart2.jpg
    Here's my project file
    http://haircuttingfun.com/tmp/escape_dvd/escape_withmusic_dvd.prproj
    Thanks!

  • Construction of a Nested Loopback Squashfs

    Currently trying to implement a 'nomad' archlinux live install (exists on Hdd) with persistence by way of DM snapshot Copy-on-Write.   
    As described here:
    File-systems in LiveCD by J. R. Okajima 2010/12
    http://aufs.sourceforge.net/aufs2/report/sq/sq.pdf
    Pages 4 - 9
    Also:
    device mapper in general
    http://linuxgazette.net/114/kapil.html
    I notice that the Archiso project has adopted dm snapshots
    Can anyone point me in the right direction?
    Thanks in advance
    ArchNemsys
    I recently discovered Archlinux after suffering dependency hell many other distros
    (my fault being reliant the system to do package management thank you Pacman/AUR)
    and have found the wiki, forum and community to exemplary resource.

    Sorry for the long delay my system suffer a particularly bad brown out (fried power supply)
    I have compiled an Archiso live dvd as per your suggestion and with the correct boot parameters I believe it is coming close to what I want.
    Following guide here
    https://kroweer.wordpress.com/2011/09/0 … -live-usb/
    (“Excellent by the way”)
    I should perhaps better clarify the system I am attempting to construct.
    My need of a live “nomad” system clearly isn’t for portability,
    However I have used many live systems over the years because I run several old computers with old slow (and potentially dieing dead) hard drives.
    The hard drives along with peripherals never seem to get upgraded so the systems end up with reasonable cpu/ram even old but gaming gpu. So the largest bottleneck to the user experience is the harddrive speed.
    Enter LZO compressed squashfs and that old harddrive runs like new. Now previously I used Aufs to get a transparent overlay this has clearly been superseded by the use of cow dm snapshots   
    While I do believe with sufficient tinkering this could be achieved by the archiso scripts. Has anyone succeeded in integrating COW snapshots and squashfs to achieve transparent compression on a standard Arch install. 
    Similar to https://wiki.archlinux.org/index.php/Ma … ing_.2Fusr

  • My iMac is running REALLY slow - could my hard disc be dying?

    I have a 27" iMac with a Core i7 chip and 8GB of RAM.
    It has always worked really fast with absolutely everything I have tried with it.
    It worked fast in Snow Leopard. I upgraded it to Lion in September and it still worked fast (though a tiny bit slower perhaps than Snow Leopard).
    In the last week, the machine's speed has slowed to an absolute crawl and I am almost constantly getting the spinning beach ball.
    By a crawl, I mean that opening iTunes can take five minutes. Opening the Applications folder inside Finder can take five minutes. During times of this slowness, the spinning beach ball animates and I can move the mouse cursor, but I cannot get any response from the machine.
    The machine is so slow that it is basically unuseable - I cannot wait five minutes to open a document!
    What is really odd is that the computer will be really slow for 4-5 minutes, and then for perhaps 40 seconds or so I will get maybe one minute where things work at normal speed, before the speed drops back to a crawl.
    Even restarting the computer takes an age.
    My theory is that something in the computer has malfunctioned - either the motherboard or the hard disc.
    I have run a few disc utilities (Disk Utility, Apple Hardware Diagnostic, TechTool 5), and the SMART status of the hard disc appears to be good and all reports check back successfully - although they all take longer than I'd expect. Whether that means the hard disc is really fine or not, I'm not clear.
    I had one other hard disc die on me once, and that just died and was gone, but if my hard disc is dying then the problem it is showing is intermittent, i.e. it is only working part of the time.
    At present I am making a backup of the iMac hard disc by having booted the iMac in Firewire Target Disk mode and manually copying files across. However, so far it has only managed 1GB of about 432GB and is estimating that it will take 2 days to complete the task.
    Has anybody got any advice - is the hard disc or the motherboard a likely culprit?
    The machine is under warranty at least, but I can't figure out whether to drag the machine into an Apple Store, or to phone AppleCare and get them to pick it up. If the machine would be repaired while I waited at the Apple Store then that would be great but I doubt this would happen.
    Any advice?
    P.S. I checked for runaway processes... nothing to find in Activity Monitor. CPU is about 5% max. Lots of free RAM. Hard disc is only half full.

    mccltd wrote:
    How do you load lion onto an exteranl disk and boot from it as I would like to give that a try.
    I presume its an external usb drive?
    thanks
    Hi,
    I used an external hard disc - Western Digital MyBook 500GB drive.
    All you do is run the Lion installer, which you can redownload from the Mac App Store if you've bought it. As part of the Lion installer it asks which drive you want to install to.
    To save having to redownload the Lion installer every time, once the download has completed from the Mac App Store, but before you have run the installation process, you can extract the disc image and retain it for future use (if you don't extract the disc image, then it gets deleted at the end of the installation process and you'd have to redownload it again next time).

  • MacBookPro got extremely slow recently. Is my HDD dying?

    Just about a week ago, my Macbook Pro (13 inch, late 2012, standard configuration) suddenly got extremela slow (although RAM and CPU are both rather low).
    I get the beach ball doing very simple tasks like opening a new Tab in finder or even by hovering over the red X from a window.
    Apple Hardware Test didn't find anything wrong, as well as the disc Inspector, but when I was running a benchmark (iQuickMark) i got reeeaaaaaally bad results regarding the hard drive (image attached).
    Strangely when an app or a process is running, it's running totally fine. I even could play a whole concert with MainStage2 and as soon as the performance-mode was active (after about 10 minutes of loading) -> no more lag at all.
    That's why I think there is a problem with my HDD.
    Do you think it's dying (after 1 and a half years?) or is there a different problem.

    New information...
    The Hard drive seems fine!
    I exchanged it with a brand new Samsung SSD, and put the old HDD in a USB-case.
    Now I can Boot from the USB-Drive without any problem. But the new(!) internal SSD doesn't work.
    When I try to format/partition it via the disc manager, I get an error message when trying to format in MacOS extended format (no problem formatting in FAT).
    So my new guess is, that it's the Hard Drive Controller that may be problematic.
    Is there any way, this could be fixed? Or am I doomed to always have my drive connected via USB?

  • SSH sessions over Putty die unexpectedly & commandline entry is slow

    I have a Sun Ultra-60 running Solaris 9 at patch level 118558-05. Users of this server report that their ssh sessions over Putty to this server die unexpectedly anywhere from one to two times per week. The users are usually in a vim session at the time editing php files for the website hosted on the system. Another problem reported is that the user's command line input slows dramatically and they must wait for the server to complete the line they were typing prior to proceeding.
    I cannot find the source of this problem. To date, the following is what I have tried in my troubleshooting efforts.
    1) ptdiag - reports no hardware failures
    2) /var/adm/messages - reports no issues relating to the problem mentioned above.
    3) swap -l - the server has plenty of swap and shows no need for additional swap space Here is the output from swap -l
    swapfile dev swaplo blocks free
    /dev/vx/dsk/swapvol 213,6 16 8389632 8358176
    I should also mention that /tmp is not full and is currently only at 2% of it's capacity.
    4) ndd shows that the link speed, duplex, etc. are correct at 100Mbps full-duplex.
    5) System uptime is at 337 days and the uptime command currently shows the following load: load average: 0.12, 0.11, 0.09
    6) vxdisk list shows the two internal mirrored disks as being online and no errors. iostat -En shows no soft or hard errors on the two disks
    7) This server only has two users and the main applications in use are mysql and apache.
    8) I have upgraded to the latest version of the vim editor and the problem still persists. I have also had the users upgrade to the latest version of Putty and to turn on the logging feature of Putty which hasn't revealed any information as to why the sessions are unexpectedly terminating.
    9) I have checked the /etc/default/login setting for the "TIMEOUT" variable which is commented out. I also checked the users profiles and verified that there are no timeout variables defined.
    10) Here is my netstat -i output:
    Name Mtu Net/Dest Address Ipkts Ierrs Opkts Oerrs Collis Queue
    lo0 8232 loopback localhost 52375982 0 52375982 0 0 0
    qfe0 1500 servername servername 2319804623 29884 1493848177 0 0 0
    qfe1 1500 servernamea servernamea 231550668 0 3694 0 0 0
    qfe2 1500 servernameb servernameb 40944152 1 65630146 0 0 0
    Some of these numbers look high, but I don't see any collisions.
    Any help would be appreciated. If additional commands need to be run, please advise and I will gladly post.
    Thanks much for any assistance.

    Hi Darren,
    The user's vim session dies when the users are actively typing.
    As for there being a firewall or NAT device between the workstation and the server, yes, there is. The users are in one building and the server is housed in a datacenter in a separate building. The users do not have this issue with out other Solaris 8 and Solaris 10 servers...only this one particular server. A traceroute to the server takes only 5 hops and returns quickly.
    As for the logs, I just checked /var/adm/messages and it is reporting the following types of messages over and over.:
    [ID 317013 daemon.notice] bpcd[11746] from some IP
    I think these messages are generated from Veritas Netbackup which is administered by a separate team than what I am on, but I can have them investigate.

  • Slow Modem Speed Graphite Base w/Dial Up

    I've had a graphite base station for a couple of months now. At first, the connection speed was comparable to the v 90 modem in the computer, but recently it started connecting at a rate so slow pages end up not loading, and mail gives me errors when trying to get mail. The signal strength is great, so I suspect the base station's modem is to blame. Is there any way to get the speed back up to where it was? Is this a firmware issue? I'm not looking for greased lightning, just the same old slow dial up speed I'm used to. Does anybody else have this problem or a solution (other than to buy a newer base station)?

    Wouldn't the slowness through the ethernet connection to the base rule out RF? If not, what was the purpose of that test?
    When accessing the Internet wirelessly, the speed is limited by the speed that data can be pulled from the ISP. If connecting via Ethernet results in the same slow speed then you know that the speed issue is between the ABS and ISP.
    We don't have a phone that operates in that range.
    Some of the wireless handsets that use 5 GHz also send some control signals at 2.4 GHz which would interfere with the ABS's wireless signal.
    Have you tried changing the channel used by the base station? It is quick and simple to try.

  • Help please: extreme card in 17" iMac with graphite base station SUPER slow

    I am at my wits end and hope someone can help me. I have a graphite base station that has worked perfectly with a TiBook for years...I just got a 17" iMac with an Airport Extreme card and it is having big problems. The symptom is difficulty connecting to the base station, and when it does manage to connect, it is really slow...we're talking about 300 KB per MINUTE. The signal strength shows 4 bars, and I confirmed with AP Grapher that the signal is always running 70% or more. The older TiBook meanwhile works great, as it always has. A peer-to-peer wireless network between the two computers (bypassing the base station) also works great. Wired connection to internet also great. So I suspect the problem is the communication between the graphite base and the Extreme card...though this is supposed to work fine. It seems the hardware itself must be OK because the base serves the old TiBook so well, and the peer-to-peer network works great too. I am well and truly stumped and hope someone out there can help.
    G5 Quad   Mac OS X (10.4.3)  

    I am having what I think is a similar problem, although my problem is more related to a complete loss of signal. I am starting to think, from what I am reading in other posts here, that it is something related to 10.4.3, as the problem I am experiencing began after installing the 10.4.3 update. Do you know if the iMac has 10.4.3? Also, are you using something prior to 10.4.3 on the other, unaffected machines? You can read the post about my problems at the following 2 links:
    From Apple's AirPort Discussion Forums (here):
    Topic: HELP! AirPort Signal "Suddenly" Sporadic on iMac G4
    http://discussions.apple.com/thread.jspa?threadID=264690&tstart=0
    From the Mac OS X Hints Forums:
    http://forums.macosxhints.com/showthread.php?t=48498
    Please let me know the problem you have is similar to the one I have, and if you have 10.4.3 on the affected machine. In advance, thank you.

  • Computer screen dying a slow death

    I've noticed that my display is somewhat dimmed in two areas on the bottom of the screen when I wake the computer from sleep.
    Ususally looks fine after a minute or so.
    Does this mean the screen is dying?
    iBook G4   Mac OS X (10.4.10)  

    No, this is normal for CCFL backlit systems. It's the backlight warming up

Maybe you are looking for