1478672 - Slowly load unsynced photo attachments from gmail.

Status: RESOLVED DUPLICATE of bug 1460104

(MailNews Core :: Networking: IMAP, defect)

Description

[pete82]

User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:61.0) Gecko/20100101 Firefox/61.0
Build ID: 20180704003137

Steps to reproduce:

Hi guys. Can anyone tell me why TB very slowly loads photos from gmail messages? When I open gmail in Firefox browser I don't have any problem with photos loading speed. But when I use TB I need to wait very long to show the same attachments.

Comment 1

[Wayne Mery (:wsmwk)]

(In reply to pete82 from comment #0)
> ...
> Hi guys. Can anyone tell me why TB very slowly loads photos from gmail
> messages? When I open gmail in Firefox browser I don't have any problem with
> photos loading speed. But when I use TB I need to wait very long to show the
> same attachments.

please give numbers.

Is is also slow if Windows is started in safe mode?

Comment 2

[pete82]

(In reply to Wayne Mery (:wsmwk) from comment #1)
> (In reply to pete82 from comment #0)
> > ...
> > Hi guys. Can anyone tell me why TB very slowly loads photos from gmail
> > messages? When I open gmail in Firefox browser I don't have any problem with
> > photos loading speed. But when I use TB I need to wait very long to show the
> > same attachments.
> 
> please give numbers.
> 
> Is is also slow if Windows is started in safe mode?

OK the same mail with 3 photos:
1. gmail in FF windows - 5 seconds,
2. gmail in TB - abou 60/120 seconds,sometimes TB is working and working and nothing. So then I open gmail in FF window and there is no problem with fast loading mail by mail.

Comment 3

[Wayne Mery (:wsmwk)]

Please test in safe mode https://support.mozilla.org/kb/safe-mode-thunderbird

Comment 4

[pete82]

1. Test mode - nothing changes.
2. TB 52 - the same speed.
3. Where can I check imap sync enabled option for the folder?

Comment 5

[Wayne Mery (:wsmwk)]

(In reply to pete82 from comment #4)
> 3. Where can I check imap sync enabled option for the folder?

right+click folder > properties > sync > select this folder for offline use should be enabled (checked)

Also a) how big is the folder (in the properties tab), and what type of computer are you running?

Comment 6

[pete82]

My pc is fast, i7 and ssd and 16GB RAM. Also internet connection is very fast. 
Folder has 11 MB. 

When I select offline syng TB just download all folder at once and save it for my drive, right? If right this is no solution. I don't want store all mails on my drive. :) Mailspring doesn't save offline and I can read gmail at the speed like for web browser window.

Comment 7

[Wayne Mery (:wsmwk)]

What is size of these attachments?
Does it happen if only one attachment?

Comment 8

[pete82]

Size is about 4,6MB. For my bandwidth I need less than one second to download 10MB so it's not size matter. It's not only attachments problem. Very often I need to wait very long to load new mails. BTW with others accounts on pop verification I don't have this problem. Only Gmail is working slowly.

Comment 9

[Wayne Mery (:wsmwk)]

Is this now with versoin 60?

Comment 10

[pete82]

(In reply to Wayne Mery (:wsmwk) from comment #9)
> Is this now with versoin 60?

yep :/

Comment 11

[Wayne Mery (:wsmwk)]

I intended ... Is this GONE now with versoin 60?

Hopefully this is how you understood it.

Comment 12

[pete82]

(In reply to Wayne Mery (:wsmwk) from comment #11)
> I intended ... Is this GONE now with versoin 60?
> 
> Hopefully this is how you understood it.

I recorded video for you. Just check your mailbox for YT link.

Comment 13

[Wayne Mery (:wsmwk)]

Please send it to Gene, whom I have just copied on the bug report

Comment 14

[gene smith]

Are you downloading the picture to a file and then opening it with a separate application? Or are you displaying the attachments inline in tb and just viewing them there?

If you shutdown tb and then start it back up and go to a message with a large attachment, I assume you are saying the download is slow. If you then go to another message (with or without a picture attachment) and open it and then go back to the original message with the large attachment, is the 2nd access to that large attachment also slow?

When you only store messages on the imap server like you are doing (no local disk storage/sync), tb uses a RAM memory cache to save the most recent accessed attachments so the 2nd access should be quicker.  The memory cache is cleared on tb restart.

Another issue that can slow down access to large attachments is a feature called "chunking". This causes the attachment download to occur in possibly many small chunks requiring more communication "round-trips". Disabling this might be helpful. Go to the 3 horizontal bars icon at the top right and select Options/Advanced/Config Editor. In the config editor search for fetch_by_chunks. Double click the displayed line so it changes to false (and the line also becomes bold when set to a non-default value). Restart tb and see if that improves the speed.

Comment 15

[gene smith]

(In reply to pete82 from comment #8)
> Size is about 4,6MB. For my bandwidth I need less than one second to
> download 10MB so it's not size matter. It's not only attachments problem.
> Very often I need to wait very long to load new mails. BTW with others
> accounts on pop verification I don't have this problem. Only Gmail is
> working slowly.

You mention pop here. My assumption is that you are accessing gmail with IMAP and not POP3! Just want to make sure.

Comment 16

[pete82]

fetch_by_chunks fale = problem solved! THANK YOU :)

Comment 17

[gene smith]

Glad it helped! This appears to be a duplicate of this bug (or at least they have a common solution): Bug 1460104