On 03/20/2018 10:24 AM, home user wrote:
Point: downloading in Thunderbird of folder structure, message headers, and messages (especially with attachments) are the only cases in which I experience slowness. Youtubes, high-resolution weather satellite loops, and the download phase of my weekly "dnf upgrade" all happen very quickly and without problems. Based on this, is anything other than verizon/yahoo or Thunderbird suspect?
Unlikely. Especially given what I saw in your Thunderbird log file.
Question: Is a new thread needed for this?
No. I would suggest trying another email client if you can, just to see
if it's something specific with Thunderbird and Yahoo or if it's a
general failure of Yahoo's IMAP support. Do you have an email client on
your phone? (I recommend K-9 if you don't. :-) )
Question: "ifconfig" output appears to contain a few ip addresses. I'm very security and privacy conscious, and uneasy about posting ip addresses. What fields do I really need to post?
I assume just the MTU. However, I expect your IP addresses are just
going to be the typical internal network ones anyway.
By the way, what is "MTU"?
https://en.wikipedia.org/wiki/Maximum_transmission_unit
The largest packet size you can send on the network interface. 1500
seems to be the standard size, but I think there's a process of checking
along the links to see if there's a smaller one along the path. If you
send a packet larger than the max MTU, it will get fragmented into
multiple pieces which can slow things down especially if one of those
pieces gets lost on the way. Or worse, in a badly implemented network,
sometimes a link will truncate or drop the packet instead of fragmenting it.
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