Checking Transfer Speed

I am using a Macpro to synch files with an AppleTV and to share files with my Macbook Pro and audio with an Airport Express. Where can I check the transfer speed when I send files from my Macbook Pro to my Macpro or the other way around or the transfer speed to the AppleTV or the Airport Express?
Thanks.

I would sugget you try out menu meters from 'Raging Menace'
menu meters
It will show you your network throughput in the menu bar once you enable it in the menu meters preferences.

Similar Messages

Regarding Transfer speed in Cisco Any Connect

Hi,
I was trying to check transfer speed from Cisco Any Connect, with only ports opened in firewall 443 & 80 with 1 destination , but to complete data transfer of 50MB file it takes around 40mins, but if all ports are unblocked in Firewall with 1 destination ,it takes only 9mins.
so wanted to know the correct port numbers which needs to be opened to make data transfer speed fast & why this behaviour.
Please somebody help me.

a customer has confronted me with a similar issue. They are using AnyConnect SSL Clients in their LAN, and noticed a severe performance drop on client side once connected via AnyConnect. I have set this up in a lab environment to compare LAN performance with AnyConnect SSL performance.
Win7 Client
AnyConnect ASA5520 Win7 iperf Server
Secure Mobility -----------1Gb LAN---------------- v9.1.1---------------------1Gb LAN-------------------- TCP Window Size 4MB
3.1.02040
The ASA was configured from factory default and there was no traffic passing besides this test. AnyConnect used DTLS, and interface mtu on the ASA was 1500, the AnyConnect mtu was left unmodified, so I suspect the maximum of 1406 bytes was used.
Result:
- While AnyConnect was disconnected, Iperf reported bandwidth usage of about 300Mbps. This was what I was expecting.
- As soon as I was connected via AnyConnect, the bandwidth usage dropped tp about 80Mbps. I expected a slight drop, but not this much.
What causes such decrease in performance? Sure, if connected via the Internet, clients will most likely never notice this, but the customer uses AnyConnect SSL in a Gigabit LAN environment. Could the bottleneck be on the client side? The load and memory usage on the ASA side was very low. I have tried several ASA versions, but they all deliver similar results.

Checking the transfer speed?

I am using an Extreme connected to a hard drive to share files.
1. How can I check the speed transfer rate of my Extreme?
Thanks.

neptune2000 wrote:
rick.pearl wrote:
I am using an Extreme connected to a hard drive to share files.
1. How can I check the speed transfer rate of my Extreme?
Open Airport Utility, Advanced, Logs & Statistics, Wireless Clients, Rate.
Now, if you are looking at "disk" transfer speeds, download Xbench:
http://www.xbench.com/

USB transfer speed checker

In windows 7 it's quite easy to see the transfer speed of say a USB drive, but I've been trying to search up some sort of app or widget that can tell you how fast the USB transfer speed is, just to gauge the performance. I know there is xbench but that's just read/write speeds. Thanks.
Message was edited by: Nanotechnology

In windows 7 it's quite easy to see the transfer speed of say a USB drive, but I've been trying to search up some sort of app or widget that can tell you how fast the USB transfer speed is, just to gauge the performance. I know there is xbench but that's just read/write speeds. Thanks.
Message was edited by: Nanotechnology

External hard drive, error -36, corrupt files and slow transfer speeds

This is a long post but stay with me.
I've got an external 250GB Lacie drive connected to my 24" Intel iMac via Firewire 800. I have approximately 80GB worth of files (including my iPhoto library) on the Lacie that I'm trying to move over to my iMac but have run into some frustrating problems.
Overall, transfer speeds are erratic – fine at times and SUPER SLOW (5 minutes to transfer a 3MB file) at other times. At first I was transferring entire folders, but after always getting errors (error -36 to be exact), I was having to transfer individual files. This works fine as long as the files aren't too big (which makes the transfer speeds SUPER SLOW) and not corrupt (which gets me an error -36). Is my Lacie crashing on me? Is there any hope?
Here's what I've done to try and salvage my sanity with no resolve to my problems (not exactly in this order):
1) Ran Disk Utility to repair Lacie. Everything came back OK
2) Ran Disk Warrior on Lacie. Found a handful of bad items that Disk Warrior was able to repair. Had Disk Warrior replace the old directory of the Lacie with the new directory.
3) Ran Drive Genius: Raired and Rebuilt the directory, did an Integrity Check (came back OK), attempted to Defrag but could not because of errors to the drive, did a Scan for bad blocks (which after running for 3 days! it was only 20% complete and had found over 150 bad blocks, at which point I quit to try something else)
4) Checked that my Firewire cable was properly connected and replaced the older one I was using with a brand new one.
5) Disconnected all peripherals except for keyboard, mouse and Lacie.
6) And at times, even viewing a file on the Lacie has caused my Finder to crash, requiring a restart of my iMac.
I'm sure I've left something off I've tried but you get the idea.
I've read that maybe I can transfer my files using Terminal. Yes/No? Does this bypass any corruption the files may have?
What about creating a second partition on the Lacie and moving files over to the second partition? Does this solve anything? I don't know anything about partitioning so maybe I'm talking crazy.
I've also read that iPhoto tends to corrupt files which makes me hate iPhoto, and myself for not backing up.
And I've read a lot about error -36's and none of it sounds good so I'm just hoping that someone might have other suggestions for me to try and save my files (especially my iPhoto files which include baby pictures that if I lose, my wife will kill me).
So if anyone has any ideas, let me know. Please. I'll try anything.

Hi Aaron Thompson-
I am fairly certain you have a bad power supply brick to the LaCie drive. This is a hard problem to troubleshoot as generally when the bricks go bad they do so slowly and the drive appears to power up and stuff but it just doesn't work.
If the drive is under warranty LaCie will replace the brick at no charge. Otherwise they sell them for around $20US on their website.
Luck-
-DP

Transfer speed and other minor bits

First off - I love my iPod (40g Colour) and despite my regular bouts of impatience when updated, loading etc I am very happy with the thing. I even bought my wife a shuffle and she likes that for when she's at the gym. I found the software/hardware to be very forgiving.
However I thought I'd post a query to see if anybody had any ideas on my minor problems.
1) When we loaded my wife's shuffle for he first time we had problems with the USB 2 convection. PC keeps saying "this item can run faster connect to a USB2 ....." but it is connected to a USB 2 socket. Now everytime I attach either iPod the same warning comes on (except if I connect before starting!). I know its a USB 2 because a new board was fitted a while ago and my 40g will synch and charge on the connection.
2) Slow transfer. I recently loaded iTunes 5.0 which didn't work for me (see 3). So I wiped it and loaded a copy of 4.9 (thanks to filehippo). Im up and running again but had to re-synch my iPod to iTunes. The tranfer rate is about 500 tracks per hour so to do the 8500 that my iPod takes needs 17 hours. When its done I should'nt need to do it agin for a while but could I speed things up a bit?
3)Should I go to iTunes 5.0.1? 5.0 loaded on my PC fine without all teh problems that have filled these oages recently but when in 5.0 I connected either iPod (shuffle or 40G I got an error somthing like "Ipod not recognised re-intall iTunes". I know some other people had a similar problem. iTunes 4.9 is working fine but is it safe for me to try 5.0.1 yet?
Sorry to go on a bit but I know from watching these forums recently there are some very knowledgeable and helpful people out there so I hope you don't mind my request.

I've had some news - most of it good. I got fed up with the transfer speed so I took my box into my local store to get it checked out. No visible fault on my USB 2.0! I know it happens but they couldn't replicate it so I went home. Plugged all my stuff in except USB devices. Plugged in my iPod and it worked. I was now thinking about power requirements etc. Plugged in my USB modem and the iPod still updated at USB 2.0 speed. Next I tried my wife's shuffle - so far so good. I then plugged everything in and the iPod defaulted back to USB 1.1!
Tried the shuffle in the spare USB2.0 socket and it worked. Plugged my iPod in and that worked - Now I knew what the problem was - I only have 3 USB 2.0 sockets (5 USB1.1)and two had faulted.
Next step will be a new card with a fire wire socket! Happy Days - although I still cant get an extension cord to work with my iPod.
While I was on a roll I took the bull by the horns and loaded iTunes 6.0. Works like a dream although it is a bit slower than 4.9 - probably considerably bigger but it works!!
My turn to be the lucky one this week!!! Maybe your turn next.

Too slow transfer speed for Toshiba 3.0

Hi there
i just purchased a toshiba 3.0 external hdd.
I use windows 7 genuine.
My pc specs are pretty ok cos i am able to run heavy games like crysis 2.
The problem is, My external hdd has slow transfer rates. This problem i started facing aroung 3 months ago. My hdd is out of warranty.
My USB ports are ok and i connect it to primary port.
The transfer speeds are just around 10MBPS and sometimes it drops to KBPS!!!!
Also, it does not copy some files and gives error "Failed to read from source disk" or something like that.
There is no Virus in it, I have enabled write-cache. I have defragged it.
My OS is fine and also, i checked it on other OSes.
Also, i have tried using "check disk for errors" with proper procedure but it hangs somewhere in the middle after it processes 500000 sectors or so.
I got my HDD from my cousin as he no more used PC and without any cover so i dont have any idea of model (although if there is any utility to find model then please notify me).
Also, it worked fine during then. Me and my cousin are from India only.
How can i fix this issue?
Please help me.
Message was edited by: Jaskaran
null

Please dont understand me wrong but if the case is urgent call Toshiba hotline in your country or contact nearest Toshiba service provider.
This is user-to-user forum only.

Transfer speed of USB vs Gigaport attached drive WRT610N

I know this is a loaded question but here goes: Assumptions: eqivalent drive specs but one is connected to the USB port of a 610N and the other is connected to the gigaport of the 610N which drive should have the fastest throughput and approximately by what % margin?
The reason that I am asking this question is that I did a backup of about 40GB to a Seagate drive attached to the USB port and it TOOK FOR EVER!!!!!!!!!!!!!!
I have a gig capable drive on order and am praying that the performance will be much better than the USB drive.

What is the speed you are getting from the USB Port..?
I think you need to make some changes on your Wireless router, so the Download and upload speed improves.
Open an Internet Explorer browser page on your wired computer(desktop).In the address bar type - 192.168.1.1 Leave username blank & in password use admin in lower case...
For Wireless Settings, please do the following : -
Click on the Wireless tab -
This settings are for 2.4GHz.
-Here select manual configuration...Wireless Network mode should be mixed...
-Provide a unique name in the Wireless Network Name (SSID) box in order to differentiate your network from your neighbours network...
- Set the Radio Band to Standard-20MHz and change the Standard channel to 11-2.462GHz...Wireless SSID broadcast should be Enabled and then click on Save Settings...
Please make a note of Wireless Network Name (SSID) as this is the Network Identifier...
For Wireless Security : -
Click on the Sub tab under Wireless > Wireless Security...
Change the Wireless security mode to WEP, Encryption should be 64 bits.Leave the passphrase blank, don't type in anything...
Under WEP Key 1 type in any 10 numbers please(numbers only and no letters eg: your 10 digit phone number) and click on save settings...
Please make a note of WEP Key 1 as this is the Security Key for the Wireless Network...
Click on Advanced Wireless Settings
Change the Beacon Interval to 75 >>Change the Fragmentation Threshold to 2304, Change the RTS Threshold to 2304 >>Click on "Save Settings"...
Now see if you can locate your Wireless Network and attempt to connect, and after this try Downloading and Uploading on your Storage Drive and check whats the speed you are getting
Same goes for your 5GHz Wireless Network.
Wireless Network mode should be mixed...
-Provide a unique name in the Wireless Network Name (SSID) box in order to differentiate your network from your neighbours network.
Set the Radio Band to Wide-40MHz and change the Wide channel to159 and Standard Channel to 161-5.805GHz...
For Wireless Security : -
Click on the Sub tab under Wireless > Wireless Security...
Change the Wireless security mode to WPA, For Encryption, select AES...For Passphrase input your desired WPA Key. For example , MySecretKey , This will serve as your network key whenever you connect to your wireless network. Do NOT give this key to anyone and remember the key.
NOTE : Passphrase should be more that 8 characters...
Try and see how is the data transfer speed.

Internal Disk to Disk Data Transfer Speed Very Slow

I have a G5 Xserve running Tiger with all updates applied that has recently started experiencing very slow Drive to Drive Data transfer speeds.
When transferring data from one drive to another ( Internal to Internal, Internal to USB, Internal, Internal to FW, USB to USB or any other combination of the three ) we only are getting about 2GB / hr transfer speeds.
I initially thought the internal drive was going bad. I tested the drive and found some minor header issues etc... that were able to be repaired so I replace the internal boot drive
I tested and immediately got the same issue.
I also tried booting from a FW drive and I got the same issue.
If I connect to the server over the ethernet network, I get what I would expect to be typical data transfer rates of about 20GB+ / hr. Much higher than the internal rates and I am copying data from the same internal drives so I really don't think the drive is the issue.
I called AppleCare and discussed the issue with them. They said it sounded like a controller issue so I purchased a replacement MLB from them. After replacing the drive data transfer speeds jumped back to normal for about a day maybe two.
Now we are back to experiencing slow data transfer speeds internally ( 2GB / hr ) and normal transfer speeds ( 20GB+ / hr ) over the network.
Any ideas on what might be causing the problem would be appreciated

As suggested, do check for other I/O load on the spindles. And check for general system load.
I don't know of a good GUI in-built I/O monitor here (and particularly for Tiger Server), though there is iopending and DTrace and Apple-provided [performance scripts|http://support.apple.com/kb/HT1992] with Leopard and Leopard Server. top would show you busy processes.
Also look for memory errors and memory constraints and check for anything interesting in the contents of the system logs.
The next spot after the controllers (and it's usually my first "hardware" stop for these sorts of cases, and usually before swapping the motherboard) are the disks that are involved, and whatever widgets are in the PCI slots. Loose cables, bad cables, and spindle-swaps. Yes, disks can sometimes slow down like this, and that's not usually a Good Thing. I know you think this isn't the disks, but that's one of the remaining common hardware factors. And don't presume any SMART disk monitoring has predictive value; SMART can miss a number of these cases.
(Sometimes you have to use the classic "field service" technique of swapping parts and of shutting down software pieces until the problem goes away. Then work from there.)
And the other question is around how much time and effort should be spent on this Xserve G5 box; whether you're now in the market for a replacement G5 box or a newer Intel Xserve box as a more cost-effective solution.
(How current and how reliable is your disk archive?)

Wireless transfer speed is hopeless!

Hi,
New BT customer here, after being with aol for nearly 10 years I thought it was time for a change. Why-o-why?
I used to have a netgear 834g router which worked fine, signal would drop a touch upstairs and broadband 8mb with aol, but they could not offer me an all-in package, Wireless transfer speed of 54mbps with a netgear wv111v2 g adapter.
So I decided to change to BT(07/06/2010) to have it all under one roof, Total Broadband they call it, Total **** I call it.
Since the changeover my wireless transfer speed upstairs will be lucky to achieve 24mbps and the signal is shocking ranges from low to can't be bothered. So, I bought a new Belkin 'N' F5D8053v6 adapter to achieve best range and speed. No change in fact, it is worse than the old adapter, Dodgy adapter maybe? No, because I then bought the singing n' dancing Netgear N 300 mbps Wn111v2 adapter and it is still rubbish 24mbps max.
I am not a computer nerd, but I can set up a network after going through all this before, having two kids who are computer nuts sees to that.
I have changed/reinstalled everything, changed the channels; WEP, WPA-Sk; refitted old adapter, sat on top the BT hub; scoured forums, all to no avail the signal and transfer rate is still the same.
Off to India it was, to have the mis-fortune of speaking to one of the most rude, abrasive customer service personel. They would not listen to what I told them, accused me of entering the wrong password; ignored me on the phone whilst talking to someone else, done some checks remotely whilst I was still on line and said the speed was the best I could achieve, after an endless amount of time on the phone, It was the brick wall with open doorway between me and the hub 5 yards away causing the drop. All non believable.
Well I have just come off the phone and it's still the same, I have had to change the channels 5 times since to try and get a constant signal.
The BT hub say tranfer rate of 130mbps when I only have 24mbps according to my adapter, so who is lying?
My line is fine, I live less than 2 miles form exchange and if I connect through ethernet I get 6.5mb, wireless it drops to 2.5mb upload 0.4mb.
Please BT come and take this useless equipment away and I will go back to aol's basic kit. I won't hold it against you, but it is far superior in every way.

herbie9 your own post said that and I quote "I used to have a netgear 834g router which worked fine, signal would drop a touch upstairs and broadband 8mb with aol, but they could not offer me an all-in package, Wireless transfer speed of 54mbps with a netgear wv111v2 g adapter." Like Sweeney47 says use that and just configure it for BT access. Plenty of links in here to help with that. The only other answer for you will be to use a powerline adpater pair to another WAP upstairs and that will give you the signal downstairs and up. should be able to pick up a cheap WAP for under £20 and the powerline adpaters vary but I have seen them for £30 and up. Quality counts on the powerline though. Must be an enviromental issue regards wireless signal.

V. Slow transfer speeds with new dual band Airport Extreme

I have a new Airport Extreme (late 2009, dual band, full 'N' spec) which I am using to replace an older Airport Extreme (early 2008, 5Ghz, 'draft' N).
I have a USB disk attached and was interested in benchmarking the transfer speed of the new Extreme, compared to the previous version. The results are puzzling / alarming.
Shown below are transfer speeds (file copied to the attached USB drive) under different connection standards (2.4Ghz / 5Ghz & a/b/g/n)
'Old' Airport Extreme
5Ghz - 'draft' N : ~5-7 Mb/sec
'New' Airport Extreme
2.4Ghz - b/g : ~3-5 Mb/sec
5.0Ghz - a : ~3-7 Mb/sec
5.0Ghz - N : ~200 Kb/sec
Hence transfer speeds appear to collapse when I try to make use of the 'N' spec with the latest Extreme. I have tried altering items such as - wide channels (on / off), interference robustness (on / off), 5Ghz channel (manual, instead of auto), with no upside.
I seem to be at the point of concluding that either
1. I have a 'broken' Airport Extreme
2. The WiFi card on my early 2008 iMac (which implements I guess the 'draft' N standard) is 'incompatible' with new the Airport Extreme under a 'N' connection.
Any thoughts ?

Since all devices in my wireless network are capable of latest 802.11n protocol, I really do not need older and slower 802.11a/b/g protocols. To achieve above 200 Mbit/sec, 5GHz band with wide channel option turned on is really necessary. Thus I really wish I can turn off the 2.4GHz radio band (seems Apple has set this band as default) of my new dual band Airport Extreme to avoid unwanted bandwidth degradation. Unfortunately this is not possible with radio mode setting in Airport Utility.
The best I can do to force connection with 5GHz radio band (with quite consistent result) is as follows:
On Airport Extreme through [Airport Utility>Wireless] :
Radio Mode: 802.11n only (5Ghz) - 802.11b/g/n
More Options>Wireless Network Option>Transmit Power: 100%
More Options>Wireless Network Option>Use Wide Channels: checked
More Options>Wireless Network Option>5 GHz Network Name:
checked and same network name with extra suffix "(5 GHz)"
On 27" iMac through [System Preferences>Network>AirPort>Advanced>AirPort]:
Preferred Networks:
Create only one profile in Preferred Networks for the above network name with suffix "(5GHz)"
Uncheck the option [Remember networks this computer has joined] to ensure there is only one profile under Preferred Networks .
Once all above settings are done, restart Airport Extreme in Airport Utility. Your computer should connect wirelessly to the base station through 5GHz band after booting most of the time. Even when it is not occasionally, simply go to the Airport icon in main menu bar and click on the network name with suffix "(5GHz)" in dropped-down list to connect manually. With all these settings, I have achieved 300 Mbit/sec bandwidth on my iMac most of the time for fast Time Machine backup.
How I wish feature for better radio mode control by end user will be implemented in next update of Airport Utility. Apple should trust end user's brain better than artificial intelligence (or ignorance ?) in wireless network implementation. Wireless traffic between the two radio bands and among various wireless devices should be segregated specifically in Airport Utility by end users whenever dual band Airport base stations are in use.

Very slow and bumpy USB3 transfer speed

Hi all,
I have a WD external usb3 hard disk and I am experiencing slow and bumpy transfer speeds as you can see from the screen shot (it starts fast but then falls down to few KB/s ...this is really frustrating):
h t t p: //s10.postimg.org/abm42k1kl/usb3_slow.jpg
If I do the same thing on my older PC with USB2 it works just fine, I mean constant speed of around 70mb/s
My Specs:
Mobo: Z97 G45 Gaming
Source hard drive: WD Caviar Black 2TB
Windows 8.1 64 with all updates
intel i5 4670k
8gb ddr3 1333
I checked to see if there is a specific usb 3 driver for Z97 chipset but I couldnt find anything. Any ideas? Or maybe it is some settings in the bios which makes this problem?
Thanks in advance for your reply!

https://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=22824
I do recommend a system restore backup just in case if anything stops working you can restore it back...

Transfer speeds

What's the transfer speed mean?
On my BT Home Hub 3 with infinity 2 I notice that the data transfer rate is shown in the setup pages as varying between 54-65Mbps.
What does this mean? Why does it vary?
All my devices are wireless n technology so would I be better connecting my netgear wnr2200 as this will quite happily do 300Mbps as it did when I was with virgin.
Thanks.

If you want a 300 connection you need to choose the b/g/n 40MHz option on the HomeHub setup. (Assuming HomeHub 3B, not sure about the A). My HH3D router does not seem to have an n only option. I wouldn't want it anyway as I have some old g devices; the router is happily mixing g and n at the same time, with the n going up to 144.
I'm not sure if your Netgear is FTTC compatible; probably is. You could just replace the HomeHub as you suggest. Are you sure you were actually connecting to it at 300, rather than that the Negear was 300 capable, as is the HomeHub.
The speeds vary as various different things change the strength of the signal and the interference from outside.
Some people say they get more consistent connections if they turn off the Smart Channel, and choose a fixed channel.
If you really want to check your wireless out, install the free inSSIDer http://www.metageek.net/products/inssider/, or iStumbler on Mac. That will show other routers nearby, and the strength of signal from each. (Beware: it does report the connection speed wrong, though.)

Slow VPN PPTP Transfer Speeds vs. Windows XP

I recently switched my father to a new unibody MacBook after years of Windows XP heartache. He uses a VPN (PPTP) connection to access files on the Windows 2003 server at work.
*On the Mac (10.5.5), the file transfer speed over VPN is so slow that it is unusable.* Leopard can connect to the SMB server easily enough but clicking on a volume shows nothing until, after a 2-3 minute wait, the file list finally populates. The old Windows XP machine loads the volumes far quicker and is noticeably faster.
We are using the same credentials and settings as on the old machine, but nothing we do will speed up the connection so that it is actually usable.
Any thoughts or suggestions? At this stage I am extremely disappointed in the Mac's ability to integrate with enterprise. I was so sure the transition would be seamless but Leopard is making basic tasks much more difficult. It's egg on my face!
Help would be much appreciated!
Thanks, jd.
P.S. My apologies if this has already been discussed. Searching didn't give me many relevant results...

Hi Joe,
College networks can have a lot of unusual security monitoring systems in place, so it's conceivable that they limit non-PC speed, but as you said, you've checked that.
There is a known issue with some Gigabit Ethernet capable Macintosh systems and some switches. This problem can be fixed by software configuration, so it's possible Windows automatically does it, but MacOS doesn't. Have a look at the instructions specified in this Apple article and see if it helps: http://docs.info.apple.com/article.html?artnum=303660

Slow write transfer speed on shared xsan folder - osx 10.8.3

XSAN3 - OS X 10.8.3
I am getting slow transfer speeds when saving to a shared xsan folder using the smb protocol.
Writes are about 15 MB/s. Reads are about 85 MB/s.
Some transfers to the shared xsan folder will fail and it doesn't matter if I am reading or writing.
If I share a folder from the system drive, the speeds are much higher and I do not have any transfer failures.
Writes are about 76 MB/s. Reads are about 99 MB/s.
If I transfer files using the file server I am sharing from, I get write speeds close to 90 MB/s to the xsan volume.
Using the AJA Test Tool:
Maximum write speeds to the xsan volume are about 600 MB/s
Maximum read speeds from the xsan volume are bout 700 MB/s
The file server and metadata controllers are Mac Pro 5.1 Mid 2012.
Xsan Storage is the Vtrak EX30.
It is configured according to documentation supplied by apple and promise.
All Xsan clients are dual nic with nic 1 configured for public and nic 2 configured for the private.
I have checked the XSAN admin tool and all metadata IPs appear correct for all clients,
thery are all using the private IP.

What template did you use for the creation of the SAN? Recall, if you did a video template but you are transferring generic office files, your performance will suffer. This is due to the block allocation size calculations. The SAN may be tailored for specific types of writes. If you are doing something outside of the expectation, you may experience negative performance.

Checking Transfer Speed

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