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Slow upload speeds to Shared hosts with cPanel/DA
No matter the host, Every shared host I've tried (tons of them) over the past few years I get slow upload speeds to the host. Fire up a VPS no problems! Even with top providers. No matter the location, even a location thats a few hops away. Even when using a VPN same results, I can VPN to Europe from the US and still get over 500+mbps down and up.
Average is around 2mbps up but some I've gotten up to 7-10mbps randomly.
I have fiber 1200/1200. And previously had the same issue with a different ISP on Cable, so its not the ISP. Along with the same issue over starlink back when I had to use it for a month.
Was about to upload a couple of gigabytes temporary to share some photos... Well now to setup something locally and self host. The whole reason I use shared hosting for my main sites is its just simple to setup.
Are providers throttling this?
One provider as an example is Racknerd, haven't tested them in awhile but same results there as well.
Other big corp providers same results as well, except one, oddly enough 1and1 upload speeds are great! But there tactics and control panel are AWFUL

Comments
What protocol or app are you using? I think this is on the ISP side. For example, I've had a similar issue when uploading over SFTP from my home fiber connection to the OVH network specifically (any location) for probably over 5 years. I know people who have similar issues with with random networks, and it's always a US ISP from my experience.
No idea about the cause but just sharing my 2c
I should of stated that, So cPanel/DA file manager, FTP, etc every method.
If it was an ISP issue, it shouldn't affect VPN, Starlink, Cable ISP, Fiber ISP, and Cellular all at the same time.
Whats weird after my post my current host I'm currently getting around 150mbps. My current host does use OVH. EDIT: Now back down to 2mbps
Ah yeah, I haven't had it happen to myself in a while since I don't use the networks that I had those issues to anymore really but I recall stopping the connection and starting transfers again sometimes made speeds fast again.
I faced that issue on WinSCP, but when i try uploading file using Filezilla i have no issues tbh. If your file is bigger than 100MB, using FTP is better. If less you can upload via Browser.
a bunch of 15-20MB files usually. Yeah I use Filezilla. Only real solution I've had is ones that offer SSH and I just upload somewhere else and wget. But its annoying.
Offering Shell access to shared hosting is kinda dangerous imo, most providers don't offers it including us but about that issue you can review our hosting solutions too.
https://tarisu.com
Most shared hosting providers do not provide Shell access due to the danger that comes with it.
Regarding OP's issues, I have not run into this myself and I have had Shared hosting in several locations in the past/present, there is usually some upload limitations for FileManager in terms of size but with FileZilla I have never had any limit issues, not that I've noticed, most cPanel/DA do not come out of the box with throttle options.
I ran a test with 2 locations one is our own, other is another shared hosting account I have elsewhere, Im gonna use Filezilla to upload from my location here in Asia 100mb file to showcase both speeds, those two location mirrors are in EU though but not same country/location.
Status: Retrieving directory listing...
Status: Directory listing of "/" successful
Status: Creating directory '/testLET'...
Status: Retrieving directory listing of "/testLET"...
Status: Directory listing of "/testLET" successful
Ive combined them in one image, both similar upload speeds
https://ibb.co/nMNDk9L6
NOTE: I stopped early it could have climbed about 5-6MiB upload speed (from my connection to both servers) Took a bit of time to catch up on the second upload to a different server but there is definitely no throttling going on, the 5-6MiB is quite standard with the distance, latency, PL, Peering etc from here all the way to EU. My connection is 1000/500 Fibre AIS.
If this is consistently happening to you no matter what provider regarding shared hosting it just has to be on your side of the fence, have you tried connecting somewhere else than your own ISP? I mean Im not saying it's your ISP but it seems not many here experience this, maybe test a friend's house on a different ISP see if you get bad upload speed to the shared hosting providers (same ones).
Under no circumstances am I saying it's your ISP just sharing my own results with you, I could even run a test for you from my location through an FTP access you provide to your location to see if im throttled, just a dummy FTP account within the cPanel to a directory and I can upload to test if it is horrendous.
Spectrum Fiber, A local Cable co, Business connection at my parents work with the Cable co, AT&T fiber in another state about 160 miles from me, and Starlink. Same issue. But also occurs with a VPN. I always blammed my previous ISP cause they are garbage, but it also occurs with my new ISP.
Whats also interesting is most of them sometimes the upload will start out for a few seconds at 50mbps and then instantly drop down to 4mbps and usually wind up at 2mbps for the rest of the upload
But say a VPS within the same provider/same location I can generally get a few 100mbps uploading to it. Just shared accounts.
Just an update, thought I'd buy a Racknerd Shared hosting account... Well 350mbps upload speeds! And thats in the France/Europe location...
So currently out of 5 providers Racknerd is the only one getting decent upload speeds at least at the moment.
To compare that with latency if that matters
Racknerd 105ms 350mbps
Provider 2 60ms 2mbps (OVH CA)
Provider 3 20ms 4mbps
Provider 4 110ms 2mbps (OVH France)
1and1 45ms 400mbps
Any chance you are using a Mellanox NIC card in your personal machine?
It's not NIC related, I had the same issue and it happened on multiple devices. Seems like a connectivity issue between certain networks from some regions really. I don't think there will ever be a solution. In his last reply it shows specifically the OVH locations getting like 3Mbps.. this is what I've experienced on and off for many years too.
I had similar problem with ISP (forgot which one, when), as they traffic shape uploads (http, scp). First 50-100MB at best effort, then 5-10% bw. It's BS, so I increase the threading. But, congestion caused failures. So, end up using vpn for upload jobs.
Your explanation is bullshit, because you only talk about speed from A to B.
Not what port, protocol, or settings you are using, or what you have done to debug it.
Passive FTP mode behind NAT or firewall rules can, for example, cause slow speeds, but there can be many other reasons.
If you want help fixing the issue instead of just blaming the providers, you need to post some real information about your problem.
If you read... the same exact methods, FTP with a VPS is perfectly fine to the same location even with the same provider.
No traffic shaping. At least with my ISP
Backblaze can hit almost a gigabit sustained, YouTube is around 500-600mbps. With a few things going at once, I can get around 2gbps both directions. And so far racknerd has had usable results. Will randomly do an upload test throughout the day to see if it changes.
Just an Intel 2.5G built in NIC to a USW Pro Max 16 > SFP+ UDM PRO > WAN. But have no issues getting over a gig on the upload side of things.
Cloudlinux IO limits?
Francisco
Not hitting the limit when uploading. I/O on one of them for example 0.3 sec
~3401 MB/ This one doesn't have any I/O limits.
Haven't tested in awhile, but even had the issue on Namecrane as well.
DELETED
~3401 MB/ This one doesn't have any I/O limits.
Are you testing this as a user or as root though? Most hosts have some sort of IO rate limit is why I bring it up. Crane doesn't, but if you're having it there...maybe your ISP is rate limiting SSH ports?
Francisco
User on shared host. Don't have the issue with VPS's, network performs as expected.
@Francisco Thought I'd buy back into Namecrane, Well... 250mbps upload speeds through file manager to the AMS location. Hope it stays that way!
Another note: Racknerd seemed like a perfect fit until I was hitting CPU lve limits just by uploading photos.
I’ve run into slow upload issues over SSH with Mellanox cards for some reason. Change vendor and problem goes away. Only on Windows though.