Forum Discussion
Edge Canary limited disk usage capability on YouTube video upload
MicrosoftHotCakeX Do you see different results with the old Edge (Spartan) or with Chrome?
Chrome's sandbox architecture may impact disk read speeds for local files, although I'd be surprised to learn that the impact is more than a few percent.
Are you relying exclusively on the "Disk Usage" column in Task Manager for your analysis?
anyways, i don't understand what you mean by your second paragraph. my SSD is capable of more than 1000 MB/s read speed (actual rate is 2000/1000 for read/write speeds) so there is something wrong that the new Edge is only using 50 MB/s. it is also an issue when we are downloading a file and Edge won't be able to download it faster than 50 MB/s.
Yes, unless you think Windows task manager is unreliable ?
- Eric_LawrenceBoth the new Edge and Google Chrome are built atop the same Chromium architecture. I'm curious whether you see different results
I can't speak to the accuracy of the task manager's throughput column; it does appear to do some smoothing, for instance.
In a quick test here, I see downloads writing to disk at ~180mb/sec, which is roughly the peak write speed of this drive. Also, keep in mind that your system's antivirus scanners are likely scanning the data as it's downloaded to disk.- Eric_Lawrence
I poked at this a bit more, and made a little test page to benchmark the file read capabilities:
https://bayden.com/test/diskbenchmark.html
This simple page allows you to pick a local file, then the browser reads it into an arrayBuffer. This eliminates the network from the equation, and while it doesn't eliminate all other variables (memory allocation costs, etc), it does provide a less noisy picture. The page itself calculates the number of bytes read and milliseconds elapsed to provide a more precise measure of disk throughput.
When I use this page on a big file on Windows 10 RS5, I note that almost all of the disk activity is charged to "Antimalware Service Executable" and NOT the browser process; the browser process shows little disk activity at all.
While the results fluctuate (and this is unsurprising given how disk caches work, etc), I do see significant differences in effective throughput based on browser versions.
I haven't yet tried this on multiple machines.
Edge 18 RS5 (Spartan) -----------------
Read 2,139,348,308 bytes in 4651 ms
459,975,985 bytes/sFirefox 68 -----------------
Read 2,139,348,308 bytes in 4394 ms
486,879,451 bytes/s
Chrome 73 Stable -----------------
Read 2,139,348,308 bytes in 2004 ms
1,067,539,075 bytes/sChrome 75 Canary -----------------
Read 2,139,348,308 bytes in 32868 ms
65,089,092 bytes/sEdge 75.131 Dev -----------------
Read 2,139,348,308 bytes in 10102 ms
211,774,728 bytes/sEdge 75.134 Canary -----------------
Trial #1
Read 2,139,348,308 bytes in 24106 ms
88,747,544 bytes/sTrial #2
Read 2,139,348,308 bytes in 2426 ms
881,841,841.715 bytes/sTrial #3
Read 2,139,348,308 bytes in 11456 ms
186,744,789.455 bytes/s- okay so I used that website you suggested, selected my 40GB video file and then i checked task manager and nothing major was happening there, CPU, RAM, disk all of them were normal, as if the website is doing nothing at all. also tested it on the preinstalled Edge, still nothing in task manager, is that normal?
I'm on Insider build fast ring 20H1.
about that 50 MB/s limit, I think it's only a YouTube thing
- Hi HotCakeX, thank you for letting us know about this issue. I believe that what Eric_Lawrence was asking is whether you see this same speed restriction when you have uploaded large videos from other browsers, specifically the current version of Edge (Microsoft Edge 44.18362.1.0) and Chrome. He was also hypothesyzing that the Sandbox protections that exist in Chromium might be responsible for this. Eric_Lawrence, if this isn't correct, please let me know.
