AE Strange "delayed reaction" network performance when on ethernet

Hello,
I recently replaced an old D-Link router with an AE and everything works great. I have my MBP set to mount my NAS on startup whether on Wi-Fi or ethernet. In both cases no issues EXCEPT for when I go on ethernet for the first couple of minutes. The connection to the NAS fails, and if I click on the NAS name on Finder (it still appears under SHARED) it will give me a "connection failed" message. If I re-mount the NAS manually using the IP address it works fine. That said, a few minutes after I've made the ethernet connection, everything does go back to normal and I can access my NAS from the SHARED section on finder. I'm really scratching my head on this one...any ideas?
Thanks!

Do NOT use a USB hub with an APE...
I had two LaCie HDs, so I figure I connect them both with a USB hub. This was not a good idea. As soon as I removed the hub the network BW was at a steady 1-2Mb/s, with an occasional peak to 5Mb/s. Still way lower than the theoretical maximum, but hey, I guess you can't have it all.
Thanks,
Erwin

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HT1414 I have updated my iPhone 4 with the new update ios7 and now the buttons are on like a delayed reaction. Frustrating when texting. Can't be right. Has anyone else had this.

I Have problems with texting and using the keyboard since going on the new update is07 it's like a delayed reaction when I'm typing

Had you bothered to search this forum before posting (forum etiquette) you would have had the answer to your question "Has anyone else had this?"

Strange network performance when using Time Machine with APE External HD

All -
I am still looking into a performance issue with TM and and an external HD on the APE.
Strangely the network activity changes from a more or less steady 200-400kb/sec to a pulsed 1-2Mb, and than a few seconds later back to 200-300kb.
I posted a few screenshots from the Activity Monitor here: http://gallery.mac.com/erwinhogeweg#100039
The RSSI is -32, and I have a 130Mb connection with the base station, but I am not even using 1% of this BW. The overall CPU load is about 40%, so it is completely mystery (to me) why this transfer rate is slow.
Is there anyone who can give some insight in this?
There is 107GB of data on my local HD. With about 2GB/hour, it will take 2 days to back this up to a n APE Time Machine drive...
Kind Regards,
Erwin

Do NOT use a USB hub with an APE...
I had two LaCie HDs, so I figure I connect them both with a USB hub. This was not a good idea. As soon as I removed the hub the network BW was at a steady 1-2Mb/s, with an occasional peak to 5Mb/s. Still way lower than the theoretical maximum, but hey, I guess you can't have it all.
Thanks,
Erwin

Horrible network performance when transfering from Vista to OS 10.4.11

When I connect from my MacBook Pro running OS 10.4.11 to my PC running Windows Vista and attempt to transfer large files, the speed is painfully slow. A 1GB file can take several hours. It sends in bursts: 3-4MB come quickly, then it stops for a while, then 3-4MB more comes quickly, etc.
Prior to installing Vista, I got normal LAN speeds between my XP and MacBook Pro. Since installing Vista, I have this problem.
Interestingly, if I login to two different ICQ accounts - one on the Mac, one of the PC, it will send files MUCH faster. The problem seems to be on the PC end, perhaps with the file and print sharing protocol, but I haven't been able to figure it out.
Any ideas?

actually, there's nothing wrong with vista itself. i've been running it on my PC for several months now without a single hitch.
are you entirely sure you're connecting to the PC properly?
also, "upgrade" to XP... good one. while you're at it, how about "upgrading" to OS 9?

Poor network performance on wired ethernet port and airport

I'm using Leopard 10.5.1 on a home network comprised of a new, fully up-to-date (firmware wise) D-link wireless router and a couple ethernet hubs. I initially had problems because of old router firmware, but buying the new router and making sure firmware was up-to-date seems to have solved the connection problems. What I now experience is that whichever network cennection I am using, wireless or wired ethernet port, will slow down so slow that it's impossible to get any web content, upload files to my local server, or sent emails with any kind of attachment. Turning off the connection I am using, either wired ethernet or airport, and switching to the other solves the problem for a short time, usually a couple days or so. Then that connection with slow down and I have to switch back - again solving the problem. So to keep my network connection alive, I have to keep switching back and forth between the wired ethernet and the airport connection.
The rest of my network consists of several Windows machines including a Windows 2000 server. None of these devices ever have any problems with network access.
I've tried playing with the advanced settings with no luck. Does anyone know of a specific setting that might be the culprit?

Hi ,
Maybe you can try to disable checksum offloading and jumbo frames on the Physical NIC (ESX platform) to check result .
Best Regards
Elton Ji
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Windows 7 file copy and overall network performance

I have noticed some major problems with network performance when trying to access files stored on our NSS based file servers when using Windows 7 Pro.
Our file servers are OES2 SP1 and SLES 10 SP3. I did not have this type of problem when I was on Windows XP. I am currently using the Novell Client 2 SP1 on Windows 7. I did have the BSOD referring to the nccache.sys file. I read a TID that said to turn off file caching, but since doing that it is painfully slow.
Any help in advance will be greatly appreciated. If I should post this elsewhere please let me know as well. Thanks again.

Originally Posted by mrosen
On 27.01.2011 20:06, dshofkom33 wrote:
>
> Our file servers are OES2 SP1 and SLES 10 SP3.
I sure hope that's incorrect, as OES2SP1 runs on SLES10 SP2, not 3.
Also, you should really be running OES2 SP2 at aleast (SP3 just having
been released).
> I did not have this type
> of problem when I was on Windows XP. I am currently using the Novell
> Client 2 SP1
No IR5?
> on Windows 7. I did have the BSOD referring to the
> nccache.sys file. I read a TID that said to turn off file caching, but
> since doing that it is painfully slow.
Caching doesn't have any noticeable or even measurable performance
impact on more copying of files, as caching doesn't come into play here.
It can only have an effect on repeated activity on the same file, which
fily copying by design isn't.
> Any help in advance will be greatly appreciated. If I should post this
> elsewhere please let me know as well. Thanks again.
This would probably be better suited for the client forums, but you need
to post more information. Being "Painfully slow" isn't a technically
precise nor helpful description.
CU,
Massimo Rosen
Novell Product Support Forum Sysop
No emails please!
Untitled Document
You are correct with our Server installations. Sorry for the mistype.
As far as my client goes. I will try the IR5 client version to see if that is any better.
As far as being "Painfully slow" i mean it was taking hours to install a product from a .ISO hosted on one of our NSS mapped drives. It would take 15 minutes to copy a 3MB file wile the .ISO was installing. It took even longer to try to copy the file down. I had no problems with any of the forementioned when running on Windows XP SP3 with client 4.91 SP5. What other details do you need?

Poor Network Performance from VPN sites

We are experiencing poor network performance when connecting from hardware VPN sites. VPN sites have Cisco Hardware VPN client 3002 which terminates to Cisco 3005 VPN concentrator. Geting upload/download speeds of 355/484kbsp from VPN to surewest.com. If I remove the VPN and connect laptop directly to dsl modem, speeds are 3mb up and 1mb down. Any ideas what could be causing this?

Try this
Adjust the MTU and MSS size in concentrator and client.
Try these link for more info:
http://www.cisco.com/en/US/products/hw/vpndevc/ps2284/products_configuration_guide_chapter09186a008015ce0e.html#1223423
http://www.cisco.com/en/US/products/hw/vpndevc/ps2286/products_user_guide_chapter09186a00803ef6c5.html

Dismal Network Performance

Hello,
I have a brand new (one week old) Mac Mini. It is able to see/connect to the wireless network just fine - however packetloss runs in the 40-60% range and ping times were well over 500ms. After experimentation I decided that the location of the Mini was not desirable and purchased a Linksys 802.11n Wireless Ethernet Bridge (aka the gaming adapter) to use. The Bridge is connected to the mini via an Ethernet cable to the Mini's network port. This configuration resolved the packet loss, and I see strong signal back to the wireless router - however network performance is still dismal (200 KBps file transfers localy to the Mini). MacBook, MacBookPro, Dell Laptop are all using the same wireless network and can transfer files without problem (2-4 MBps) even when placed in the same location as the Mini.
Reading through the forums there were some hints about disabiling IPv6 which I have done. I cannot imagine this is OSX specific given the other Macs on my network... which only leaves the Mini, which is even stranger given the performance issues on both the Wireless and Wired network interfaces.
What else should I look at? Is this just a "bad" box?
Thanks in advance,
Max
Specific Details
Mac Mini (New)
OS 10.5.8
Airport Extreme Basestation
I have a brand new (one week old) Mac Mini running 10.5.8

I have the exact same issue. I just moved into a new home and my Mac Mini doesn't pick up the network very well at all. To solve this issue, I have to buy a separate usb "N" wifi adapter to use instead of the built in airport card for the fix ($35 at NewEgg.com).
http://www.newegg.com/Product/Product.aspx?Item=N82E16833166025
The Mac Mini has horrible reception for all wireless frequencies at my house with (b/g/n). I'm using a crappy Dell running XP with a usb "G" adapter sharing it's wired ethernet to my MacMini to access the internet now through a linksys WRT54G. I bought the AirPort Extreme Base Station to try to use the "N" speeds with all the great reviews I've read about it lately and it works just as bad with the linksys WRT54G using the Mac Mini. My "MacBook" performs EXCELLENT with the linksys and the apple router. My junky dell performs EXCELLENT with both routers also. Every computer in the house (4) loves either router except the poor Mac Mini. I have moved every desktop and laptop to where my Mac Mini exists and they all get great reception (EXCEPT THE MAC MINI).
Conclusion:
MacMini: Very Bad wireless reception
MacBook: Best wireless reception of all computers with both routers.
Dell w/Netgear wireless "G" adapter: Good reception where Mac Mini is located.
IBM NetVista: Great Wireless Reception on "G" network with Linksys
HP Tower of somekind: Great Wireless Reception on "G" network with linksys.
With the Airport Extreme "N" and the Linksis "B/G" WRT54G the Airport smokes it. Plus the shared harddrive and printing is awesome.

Network Performance Troubleshooting?

Greetings all,
I have a new Sun X4240 server installed as an enterprise backup media server and it's suffering terrible network performance to our new Exagrid disk storage backup appliance. The shares on the Exagrid are mounted as NFS3 shares on the server. If I cable the server directly to the Exagrid appliance, I get a reasonable 450-500 Mb/s on a simple copy from local disk to the NFS share. When I connect them back into our Cisco switch, the performance on the same copy drops to well under 20 Mb/s. A Windows server on the same switch sending traffic to CIFS shares on the Exagrid is performing quite well.
Does anyone have any ideas how to start troubleshooting this problem? Any other recommendations? Anything will be very welcome!
Sun X4240, Solaris 10 05/09 X64
Cisco Catalyst 4506, Supervisor II+ version 12.2(46), (cat4500-ipbasek9-mz.122-46.SG.bin)
WS-X4548-GB-RJ45 (48 port 10/100/1000BaseT module)
Many thanks,
Tim

I tried forcing the port settings but that still didn't work. In the end it turned out to be a problem with the code on the Cisco router. We tried a different, much cheaper Cisco router and it worked great.

Delayed Reactions

I'm running Tiger 10.4.3 on a new G5 Dual 2.7 with 4 GB of RAM. Should be a dream system right? But over the last couple of weeks certain functions in the Finder have slowed to a crawl. Click once on a file icon in the finder and nothing happens for three full minutes. This happens in column view but not in list or icon view, so it seems to be an issue with the system churning on the file info. Same delay when invoking the get info command. A Force Quit reveals that the Finder is not responding. Launching a document opens right away but then there is a delayed "Zooming" of the icon after it has already opened - an annoying delayed reaction. Anyone else having this problem or know what could be interfering with the finder in this way? Spotlight and Find have also ceased to work but that may be a separate problem.
Repairing permissions and the recent OS Upgrade haven't made a difference.
Three-quarters of my hard drive is empty.

As a first step, check Resolving Disk, Permission, and Cache Corruption for system troubleshooting procedures (which includes repairing disk permissions as the 2nd of 3) and when doing so, follow all steps/instructions in the order provided.
If this doesn't help or resolve the problems with the Finder, check Finder issues? How to delete its preferences.
In addition and for future reference, check Installing software updates.

Xserve G5 Network Performance Questions.

Hello,
I have the latest 2.3Ghz Xserve G5 and was wondering what the optimal configuration would be for the best network performance. The unit seems to come with a couple of GB Ethernet interfaces but would a Fibre connection improve bandwidth at all? Currently this unit has direct access to a layer3 managed switch but is GB Ethernet more limiting than a fibre connection into the same switch and is a Fibre network connection possible on this unit?

Are you talking gigabit ethernet over fiber vs. gigabit ethernet over copper? Or Fiber Channel?
There's no significant difference between gigabit ethernet over fiber vs. over copper. There are some minor issues (such a a lower propagation delay in fiber vs. copper) but over short distances it's not relevant.
There are Fiber Channel cards available, but they're usually used for connectivity to storage systems (arrays, backup devices, etc.), not host-to-host connectivity.
Attaching a fiber channel storage array (such as the XServe RAID woul dhave a trickle-down effect on your network (there would be less overhead reading and writing data to disk therefore data can be pushed or pulled from the network more quickly), but it's not going to be a huge difference.
For maximum impact you could consider either trunking (combining multiple ethernet ports into a larger, virtual port) or moving to 10GbE (10 gigabit ethernet), although that will require new switches as well.
You might want to check out Small Tree, they're well versed in high performance networking and sell a range of multi-port gigabit ethernet cards as well as 10GbE solutions.

DMVPN - improve network performance

Hi All,
We have a dual hub dual dmvpn cloud network running EIGRP or about 50 and 100 sites in the coming future.
I have configured it in a way for 25 spokes to designate hub1 as primary and the other 25 spokes to designate hub2 as its primary link.
To load balance.
I need some help on sugguestion or recommendations on how to improve its network performance.
This is to anticipate queries by customer running systems&apps complaining why is the link too slow after implementing dmvpn
Is there any parameters that can be fine tuned to help increase its performance?
Please advise.
Thanks

Hello, I know this thread is old but it is exactly relevant to what i have now. We have implemented the dual hub dual dmvpn solution over the last year on our remote sites. The head ends are 7200s w/C7200P-ADVSECURITYK9-M, Version 12.4(24)T3 and the remotes are 1700s (slowly being replaced with 1800s) and 1800 series routers. there are about 60 sites, most of them riding over Comcast cable (preferred) or Verizon DSL. Many of our sites have both, where comcast is primary and DSL is secondary, so on these sites there are 4 tunnels. Our connections are getting very slow. For instance, at one site they have paid for 50mb cable connection, which, when plugged directly into the cable modem, reaches those speeds. When going through the tunnel back to our core, where we have mutiple GB ISP connections out to the internet, they are getting 2mb download speeds. Actually, they don't even have to be going out to the internet, just hitting our internal servers in the core is slow for them. We started testing multiple sites and it seems all of them are getting very slow compared to the service they have. In looking at the troubleshooting options available you listed above, I am very curious about making sure none of the devices are oversubscribed. Since we have no spoke to spoke connections I am assuming that this troublshooting should be done on the 7200s. What commands would be good to run to check for oversubscription on the 7200s regarding CPU and crypto accelerator? Also, when you mention QoS, where does this get applied? I am familar with manual QoS config for voice and video, but how does it relate to VPN? Is there anything else i can look at/modify that will help alleviate the slowness of these tunnels? Any help would be greatly appreciated!!
Thank you,
Noel

Hard drive and network performance

Can someone give me the intuitive, if not mathematic, side to where a hard drives performance becomes a bottleneck in network performance?
For example, say a given internal hard drive in a computer has a read/write of 40MB/s = 320Mbps. This is 1/3 the bandwidth of a gigabit ethernet cable, assuming everything works like it should.
So when you are downloading from your big RAID 5 file store on the gigabit network, to your local desktop (the hard drive that read/writes at 320Mbps), how do you ever utilize the full gigabit ethernet connection?
Just seems to me like the drive cache would be constantly full if you are downloading a large video file or such.
So what obvious thing am I missing?
Thanks

The simple answer is that you don't. At least not in this scenario.
As you've correctly surmised, the slower components are going to limit your throughput, but the disk speed is only one of several factors. Network latency, TCP/IP packet overhead and more will all contribute.
So you'll rarely get true gigabit throughput on file transfers. 300-400 mpbs on a gigabit ethernet connection is typical.
Where you can and do get more is on memory-based transfers - data in one systems's RAM (or cache) being copied to another system's RAM (or cache). That's why switches and routers can handle line-speed throughput - they get a packet on one interface and send it out another, never having to think about it again (oversimplified, of course).

I am trying to install a second airport express to extend my network. When I use the aiport utility it does not see the second airport express.

I am trying to install a second airport express to extend my network. When I use the aiport utility it does not see the second airport express.

Suggest that you perform a Factory Default Reset as follows:
Pull the Express from power
Wait a few moments
Hold in the reset button and keep holding it an additonal 8-10 seconds while you plug the Express back in to power
Release the reset button and allow 40-45 seconds for the Express to restart
Apple's instructions to do what you want are here:
It will often help to temporarily connect an Ethernet cable from your Mac to the AirPort Express for the setup. Once the Express is configured, you can disconnect the Ethernet cable and move the Express to the desired location.
http://support.apple.com/kb/HT4259
Although an AirPort Extreme is shown as the extending device in the example, the setup for an AirPort Express is exactly the same

Network performance transferring to Apple TV

Can anyone tell me why I can only transfer from iTunes to my Apple TV at 1.1Mb when I have 5GHz N Network? I've had Apple TV for years and it's the bain of my life getting stuff from iTunes to it. I've tried the Ethernet Power Plugs, several routers and nothing. They all take forever. I've now got the brand new Airport Extreme and still rubbish. I can transfer a file from my iMac to my Macbook in the same area of the house at 30Mb/sec (still under what it should) but as soon as I transfer to Apple TV I get an appalling 1.1Mb. It takes almost an hour to transfer an HD movie.
I use iStat to monitor network speed in case anyone is wondering how I know the speed.

Ok, I think we need to end this now. 9Mb/s is not the limit because I can copy from my iMac to MacBook through my new Extreme using N on 5GHz at 28-30Mb/s so your statement of 9Mb/s being the best I can expect is completely inaccurate for my set-up. I repeat, I also get 28Mb/s when accessing the Internet from my wireless router (48-49Mb/s if I plug directly in or place my MacBook a few feet from router) so I'm obviously getting better than your theoretical maximums.
However, according to your last post you are saying Apple have placed an N card into the Apple TV and then limited it. Well if that is the case then that would explain it but the figures you are quoting for the network performance does not apply to my network.
I've looked into several websites about the speeds and most say that you should in most cases get 150Mbps and more/less depending on the router and environment you are operating in. I also use an Airport Express to extend my signal to try and drag every ounce I can out of mine. I've never claimed that I get the maximum from my router, just the figures that iStat are kicking out while testing. My beef has always been that for some reason, transferring data to Apple TV is significantly lower than to any other device on my network.

AE Strange "delayed reaction" network performance when on ethernet

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