Or another possibility is that the Macintosh thinks that the two networks are equal costs and is throwing every other packet down a different network. Now if the router is throwing away items from the LAN segment that are sourced from the Wireless network or vice versa, slow start TCP will never speed up and the window size of the TCP session should be equal to the MTU. I certainly have worse performance at my office when both my thunder based ethernet and 802.11AC connections are active.
Would pinging the IP address of the NAS be able to show this type of errors? I haven't played at these layers in a bit and generally IPv4 configurations have to be more paranoid then they did 15 years ago. Also you mentioned in the original post that there was more than one way to set up the NAS on the router? Is one of these protocols equivalent to NFS? BTW a very good person to work for is looking for a Top Secret cleared Network LAN engineer in the DC area. :) On Mon, May 15, 2017 at 10:53 AM Tim Kilburn <[email protected]> wrote: > Scott, > > Yes, and that's not normal download speed whether AC WiFi or GigaBit > ethernet. In a perfect world, AC WiFi should have even faster speeds than > the GigaBit line. I can download HD movies three at a time in 20 to 25 > minutes or less on either connection. Sometimes one of the streams is much > slower than the other two, but I've just chalked that up to the stars not > being aligned properly and me not tilting my head the correct direction > when initiating the download. > > All my digression aside, there's something definitely out of whack with > Paul's situation, and I suspect you're correct with the proximity theory. > Paul, were you able to access the detailed WiFi stats that Scott requested > from the WiFi menu? Press VO-m twice to access the Extras menu, navigate > right to the WiFi menu, press VO-cmd-f5 to make sure the mouse is routed to > the VO cursor location, hold down the Option key then click the physical > mouse or TrackPad. Now when you navigate down through the WiFi menu, > you'll hear much more detailed info about your connection including RS > etc. There are numbers within there that can help determine what problems > may be happening. > > Later... > > Tim Kilburn > Fort McMurray, AB Canada > > On May 14, 2017, at 20:48, Scott Granados <[email protected]> wrote: > > Tim, that’s a great call, it might be a mix of things. His WiFi could be > taking priority for some reason and if the router and Mac are to close > that’s going to have all sorts of bad performance although he has a very > high end consumer router, we have the same routers in fact and he might > just be overloading the input. The distribution pattern of a WiFi network > in full power mode is a toroid and a mid power setting WiFi is a donut like > circle. He might be preferring to use the WiFi and resting inside the > toroid which would definitely have negative impact. I bet it’s Apple > keychain distributing settings that activated the WiFi. Good call. Paul, > turn off your Wifi and insure the Ethernet shows connected. You can do > this under preferences. You can also just turn WiFi off under the Wifi > control menu reached by pressing VO M twice. I suspect you know this but > I’m being thorough and in case someone else new searches for the thread. > Press vo m twice and arrow over to the WiFi settings, I don’t believe you > have to hold down option to arrow down to turn off WiFi. > (Here’s hoping Paul doesn’t already have the WiFi off, then it gets > interesting). I can’t imagine that Paul needs to tune any TCP settings on > the Mac, I’ve never had to. Such a difference in load times seems really > unusual and whacky to me. > > Thanks > > On May 14, 2017, at 8:32 PM, Tim Kilburn <[email protected]> wrote: > > Hi, > > One thing to also try, is to turn off the WiFi on the iMac when connected > with your Cat-6 cable. Normally, once the ethernet cord is connected, it > should take over priority and, thus give you the GigaBit speed, but I've > seen it get confused between interfaces and kind of inefficiently share the > two network interfaces instead. > > Later... > > Tim Kilburn > Fort McMurray, AB Canada > > On May 14, 2017, at 00:50, Scott Granados <[email protected]> > wrote: > > Wowza Paul that’s odd. > > First, let me apologize if I’m confusing you. I’m a network engineer so > this stuff is in my wheel house but I may not be explaining myself well. > > What’s got me baffled now is that you’re Mac is attached by wire and is > slower than a WiFi attached windows machine, that should be obviously the > other way round. > > Since I have the same router and similar computers lying around let me > build your setup attaching a Mac by wire and a windows laptop via WiFi and > see if I can duplicate your results. I was sure using a wire would have > fixed the problem. WOw > > > On May 14, 2017, at 1:42 AM, Paul Henrichsen <[email protected]> wrote: > > Hi, Scott. I see what you are saying. Oddly, my Mac is connected to the > Network via a Cat6 cable and my windows PC is WIFI. Yet, even when > connected via cable to the router, the Mac is slower at transferring. This > whole thing sure sounds complicated and above my skill level<grin>. > One thing I am going to try is to copy the iTunes folder to a 6TB my cloud > network drive just to see if the transfer speed is faster on the Mac. Of > course, both are hardwired to the router; so it will be interesting to see > what happens on the mac side and then on the windows side which is > connected via WIFI. > I was sure hoping this was going to be easy when I had the idea to > increase the size of my iTunes folder. > Thanks so much for your help and information. > > > *From:* [email protected] [ > mailto:[email protected] <[email protected]>] *On > Behalf Of *Scott Granados > *Sent:* Saturday, May 13, 2017 3:34 PM > *To:* [email protected] > *Subject:* Re: Slow download speeds with iTunes on a network USB drive > > No not at all, remember especially with that router, each session is > handled separately. THat’s what multiuser MIMO is. So for example, your > Mac may be negotiating a session on 5 ghz channel 36 say and your PC > channel 161 on the 5GHz band using a totally separate radio in the router. > Remember that router has 8 antennas not just the 4 big ones in the back so > there’s all sorts of paths in and out of that router. If everything is > using the same SSID you might even have a case where the two devices are > split between 2.4 and 5 GHz. Speeds on 2.4 GHz will be significantly > slower than data carried on 5 not to mention the physical bandwidth is only > 20 - 40 GHz on 2.4 Ghz and 80 GHz on 5. Things like that. Your windows > machine may be farther from the router and thus working better, the channel > you’re using on the Mac might be picking up a network next door and > colliding or even being disrupted by something non netework related like > Microwave Ovens or baby monitors etc. Let me know if that makes sense and > how that matches your setup. > > Thanks > and > > On May 13, 2017, at 6:29 PM, Paul Henrichsen <[email protected]> wrote: > > Yes. But why would the transfer speed be markedly faster on the windows > machine on the same network? If it was network related, wouldn't if be slow > on both machines? > > Paul Henrichsen > [email protected] > (559) 708-0121 > > > > On May 13, 2017, at 3:08 PM, Scott Granados <[email protected]> > wrote: > > Totally sounds like a WiFi compatibility problem or some sort of > interference. THere’s nothing different that I know of with iTunes on the > Mac and on the PC. The USB 3.0 is definitely not your bottle neck, the > setup sounds similar enough, this sounds like a network issue to me. One > thing you can try, if the Mac is right by the router is to use a wire > instead of WiFi and test the difference. If the speed is still slow you > know you’ve ruled out the network connection or at least the WiFi. It’s > possible for example your Mac is to close to the router and it’s not > working at the optimal speed. Especially with that router as it’s a pretty > high power item compared to a lot of consumer routers. Check your network > speed under the WiFi as well and make sure it’s a reasonable value and that > you’re connected using 802.11AC etc. > > Just a guess but this feels somehow network related to me. > > > On May 13, 2017, at 1:39 PM, Paul Henrichsen <[email protected]> wrote: > > Hi, Scott. > I’m going to try to answer your questions within your message; so I’ll put > my answers within your message below. > > *From:* [email protected][ > mailto:[email protected] <[email protected]>] *On > Behalf Of *Scott Granados > *Sent:* Friday, May 12, 2017 12:13 PM > *To:* [email protected] > *Subject:* Re: Slow download speeds with iTunes on a network USB drive > > Tell me about your setup more. What type of Mac, how far is the Mac from > the 8500, what sharing protocol are you using are using native iTunes > support or the pro share option. > I’m using a 21 inch iMac which is right next to the router and 8TB my book. > I don’t know how to use share protocols or what they are. The my book uses > something called ready share. > > If you’re on your Mac connected can you select the WiFi extended options > by selecting WiFi while holding down option and tell me what your TX rate, > channel and noise / signal DB readings are? > I’m not sure it’s a WiFi issue. > I do have the Mybook drive connected to the USB3 port on the side of the > Netgear 8500. > Unfortunately, I haven’t found an 8TB network drive or I would have just > used that. > However, one thing I did is to set up iTunes on my windows machine. I got > some sighted help to try to download the same TV shows I was trying to > download on my Mac. WindowsItunes isn’t the friendliest program😊. > The same file would take 3-4 hours to download on the Mac, but I > downloaded it between 20-25 minutes on the windows 10 PC. Both PC and Mac > are using WiFi. > I’m beginning to think it’s something I need to set up on the Mac to make > the transfer speed faster. The PC was way faster downloading the same file. > Twenty five minutes is way better than 4 hours. I’d hate to see how long > it would take to download a movie on the Mac. > hope this helps. > > Here’s another test, could you attach the Mac to a wired port and do a > comparable test to see whether the problem is WiFi related or something > further up the stack? > > Thanks and BTW I have the exact setup. I use an 8500 running native > Netgear software (1.2.0.94 I believe) and I’m using directly attached > network storage instead of the built in USB option so there’s a little > difference. Be glad to help though if I can. > > Thanks > > > On May 12, 2017, at 1:42 PM, Paul Henrichsen <[email protected]> wrote: > > Hi, all. > I haven’t posted to this list before, but thought I’d see if you guys had > any ideas. > I have a netgear 8500 night hawk router with an 8TB USB 3 drive connected > to the USB3 port on the side of the router. > I am trying to have a universal network drive which I can access from my > Mac and from my windows computer. > Transfer with the PC seems to be OK, but when downloading a purchased > movie or TV show using iTunes on my Mac, download speed is painfully slow. > One TV showmight take as long as 4 hours. > I don’t see anything under Mac or iTunes preferences that I can change to > help with this situation. > Is there anything I need to set on the router under the USB settings that > would make iTunes downloads faster? > Thanks. > > > *Paul Henrichsen* > [email protected] > [email protected] > (559) 708-0121 > > > -- > The following information is important for all members of the Mac > Visionaries list. > > If you have any questions or concerns about the running of this list, or > if you feel that a member's post is inappropriate, please contact the > owners or moderators directly rather than posting on the list itself. > > Your Mac Visionaries list moderator is Mark Taylor. 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