67134 - perf: multiple mark as read (not mark all read) is slow

Status: VERIFIED DUPLICATE of bug 227011

(SeaMonkey :: MailNews: Message Display, defect, P3)

Description

[(not reading, please use [e-mail] instead)]

for local folder, we call the our folderListener's OnItemIntPropertyChanged()
once per message to update the TotalUnreadMessages.

we should be batching them.

note, mark all read performance is much better.

Comment 1

[(not reading, please use [e-mail] instead)]

accept, 0.9

Comment 2

[scottputterman]

marking nsbeta1+. I don't think this gets fixed by the rewrite, but if it doesn
that would be great.

Comment 3

[scottputterman]

moving to mozilla0.9.1

Comment 4

[scottputterman]

moving to 0.9.2

Comment 5

[scottputterman]

moving to 0.9.3

Comment 6

[scottputterman]

moving to 0.9.4

Comment 7

[(not reading, please use [e-mail] instead)]

slide to 0.9.5

Comment 8

[(not reading, please use [e-mail] instead)]

this has gotten better, but more work might need to be done.  (like batching).

moving out.

Comment 9

[edmz]

[Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.3a) Gecko/20021114]

Marking as read a group of 1100 messages took close to a minute. Is this bug
dead ? Target is 1.0.1

Comment 10

[Jon Velapoldi]

Netscape 7.0.1 doesn't seem to exhibit this behavior as much on a P4-1.6 with
384 megs ram laptop.  Mozilla 1.2.1 (and 1.2, but I don't believe that 1.2beta
did) seems to thrash the harddrive as it does the "select about half of the
messages, then hit 'm' to mark as read", and takes longer than 5 minutes (my
'give up' time) to complete the operation.  Netscape 7.0.1 takes 45-50 seconds
to do the same task.

Additionally, moving ~1000 messages from one folder to another in Mozilla 1.2.1
takes far too long (more than 5 minutes, accompanied with constant thrashing of
harddrive, but no apparent change in total memory footprint (about 22 MB in
memory, and VM size lists 35 MB for whole operation).  CPU isn't particularly
taxed (5% on average), but everything is slow as harddrive thrashing
continually. Total memory usage not increasing much at all.

Doing the "CTRL-SHIFT-C" operation (mark all as read) on a folder with 1000
messages in Netscape 7.0.1 almost instantaneous (less than 3 seconds).  In
mozilla 1.2.1, approximately 1 minute 54 seconds (second hand on watch timed).

All of this on a PC running Windows XP Home. This behavior is only observed on
the laptop.  My 900 MHz athlon with 256 megabytes memory does NOT exhibit this
situation (though it is running Linux).  This behavior seems to have started
after updating mozilla to 1.2.1 from 1.2Beta.

Comment 11

[David :Bienvenu]

this is slow because we're doing a flush/sync after every mark read instead of
after the whole operation is finished

Comment 12

[Andreas Kunz]

David Bienvenu:
Did bug 227011 fix this? I don't know if attachment 136503 [details] [diff] [review] of that bug
implements what you suggested in comment #11.

Comment 13

[David :Bienvenu]

yes, thx, I'll mark this as a dup.

*** This bug has been marked as a duplicate of 227011 ***

Comment 14

[Stephen Donner [:stephend] Not actively reading bugmail]

verified dup