Exceptionally Slow Downloads Speeds from SimMarket

[KFXE 13]

Hi folks,

I've bought several sceneries from SimMarket.com but often, I get brutally slow download speeds that defy sanity.   We're talking 20KB/sec slow.

Not all the time, but often in the mornings.  I submitted a support ticket and their very fast reply was it's not them....and closed the support ticket.  Problem is, Tracert doesn't totally agree....

Below shows that the hop to the server that the downloads are hosted on (Hetzner / Telia) are in the range of near 400ms.   That would SUBSTANTIALLY slow down a large download.

 

I was just wondering if anyone else sometimes experienced super slow download speeds from them or is it just my connection?  

Thanks

Edited January 16, 2020 by KFXE

[KFXE 13]

Surprisingly, the download speeds increased back to normal just after I posted the OP above (which was a few minutes after the Support Ticket was closed)

So right now, all is back to normal.

[charliearon 3,023]

FYI, this type of a post is better suited in the Hangar Chat forum rather than a specific Sim forum.

Keep in mind that IP is located in Germany and 15 hops ain't bad!

[KFXE 13]

Ok.  Sry.   Still getting to know the forum here.  Will try harder.

[Bob Scott 7,720]

Ping latency is not a measure of throughput...it's only a measure of how long it takes a packet to traverse the route between computers.  You can have very high latency and still get good throughput.

The CDN they use has been on its butt off and on for weeks now.  Sometimes I've seen download speeds as low as 50 Kbps...the two German servers have been consistently up around 5-6 Mbps.  It's a cop-out on their part, though, to blame their download service--if it's not reliable it's incumbent on them to find another service that is. 

 

[KFXE 13]

40 minutes ago, w6kd said:

Ping latency is not a measure of throughput...it's only a measure of how long it takes a packet to traverse the route between computers.  You can have very high latency and still get good throughput.

The CDN they use has been on its butt off and on for weeks now.  Sometimes I've seen download speeds as low as 50 Kbps...the two German servers have been consistently up around 5-6 Mbps.  It's a cop-out on their part, though, to blame their download service--if it's not reliable it's incumbent on them to find another service that is. 

 

 

As slow as 50 Kbps??? .....I WISH !!

The important takeaway here is that I was told that the problem was a "Local to my end" problem.   Ticket CLOSED.

I just paid for approximately 100GB of data.......at 20Kbps.......not good.

Edited January 16, 2020 by KFXE

[Patco Lch 1,465]

I started a thread on this subject a couple of weeks ago. Spent the  afternoon in frustration trying to download TOGA projects products I purchased. They're a fine sim store but they really need to find a fix to these recent download issue. After years of patronage Im getting a little shy of buying from them.

[edpatino 1,964]

I too have to say that I've seen a lot of complaints like these about download speeds at SimMarket. To me they should react in a more proactive way.

Cheers, Ed

[KFXE 13]

Well trust me, if you ask them, they'll tell you in a heartbeat it's not their fault.....CASE CLOSED.....no discussion. 

Theory:  They may be barely covering their hosting costs....so it's maybe close to more work than its worth?

Maybe they aren't covering their costs at all?

Hot, first 50 TB @ $0.0184/GB) = $942.00

Edited January 17, 2020 by KFXE

[KFXE 13]

19 hours ago, w6kd said:

Ping latency is not a measure of throughput...it's only a measure of how long it takes a packet to traverse the route between computers.  You can have very high latency and still get good throughput.

The CDN they use has been on its butt off and on for weeks now.  Sometimes I've seen download speeds as low as 50 Kbps...the two German servers have been consistently up around 5-6 Mbps.  It's a cop-out on their part, though, to blame their download service--if it's not reliable it's incumbent on them to find another service that is. 

 

That's only true of UDP connections.   The connection to SimMarket's download server is via TCP-S

This explains exactly how the latency can slow down the transfer.

https://accedian.com/enterprises/blog/measuring-network-performance-latency-throughput-packet-loss/

Edited January 17, 2020 by KFXE

[Bob Scott 7,720]

26 minutes ago, KFXE said:

That's only true of UDP connections.   The connection to SimMarket's download server is via TCP-S

https://accedian.com/enterprises/blog/measuring-network-performance-latency-throughput-packet-loss/

The TCP throughput congestion constraint can be limiting due to latency, but that's node-to-node latency, and at the kinds of trunk bandwidths and transfer speeds we're dealing with it's generally not really a factor.  Each node on the path independently sends and acks packets to its adjacent nodes, not all the way back to the originator.  In a long transmission path where there might be 20 or more nodes, the total endpoint-to-endpoint latency can still be high without materially impacting throughput within the range of normal consumer download data rates.

[Jim Young 2,356]

When you have a lot of people online downloading this will affect the speed.  Same here at AVSIM.  We sometimes have over 1300 guests and members on-board and that slows down the connection.  If 500 of them are searching AVSIM, that will slow down the site even more.

[KL Oo 699]

Add me to the list of slow downloads.... Never really expired it at Sim Market before but has been like this all afternoon. Not sure how to insert an image but i'm currently getting 11KB/s. Its like dial up days.

 

 

 

[erict 9]

This is not good. I'm on ATT fiber and speed test I'm getting 930Mbps. Downloading from simmarket right now at 14.8KB/s.  4h30m to download a 266MB file...  Tried all 3 of their download servers, all super slow. I wish they were on AWS.