Great point! Indeed, I keep the maximum allowed scrollback histories: set-option -g history-limit 32767
Here is the result of running the diagnostic command you had provided:
*** 3.0-rc ***
$ git rev-parse --short HEAD
5a501a8a
$ tmux -V
tmux 3.0-rc3
$ pgrep tmux | xargs -r ps u
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
sunny 5047 0.0 0.0 7120 3208 pts/1 S+ 09:16 0:00 tmux
sunny 5049 14.2 7.7 316064 311552 ? Rs 09:16 0:06 tmux
$ tmux lsp -aF '#{pane_id} #{history_bytes}'
%1 10414942
%2 11566347
%3 29081
%4 29299
%5 14790000
%6 19912
%7 19570538
%8 16828680
%9 45909
%10 708177
%11 1416667
%12 457673
%13 528808
%14 1296060
%15 9743781
%16 9868770
%17 7045780
%18 11011243
%19 835906
%20 22567043
%21 13197272
%22 15372503
%23 19222647
%24 12896611
%25 4660126
%26 11658149
%27 4434778
%28 11079426
%29 2222177
%30 124916
%31 302090
%32 194485
*** MASTER ***
$ git rev-parse --short HEAD
be5af704
$ tmux -V
tmux next-3.1
$ pgrep tmux | xargs ps u
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
sunny 27524 0.0 0.0 7124 812 pts/1 S+ 09:08 0:00 tmux
sunny 27526 13.7 28.3 1141996 1135832 ? Rs 09:08 0:13 tmux
$ tmux lsp -aF '#{pane_id} #{history_bytes}'
%1 13513750
%2 21892475
%3 147521
%4 137819
%5 124611630
%6 46864
%7 40913858
%8 114684856
%9 298109
%10 1429057
%11 9660307
%12 3092193
%13 3463888
%14 1382540
%15 23361921
%16 14491614
%17 52734235
%18 94974603
%19 879626
%20 28649231
%21 103158320
%22 127392471
%23 54594903
%24 105133611
%25 37563986
%26 37268993
%27 12498662
%28 15138678
%29 18205593
%30 1078476
%31 1221090
%32 1609525
On Mon, 1 Jul 2019 09:08:56 +0100, Nicholas Marriott wrote:
> I can't reproduce this with 32 panes. What does this show in each
> version:
>
> tmux lsp -aF '#{pane_id} #{history_bytes}'
>
> On Fri, Jun 28, 2019 at 12:43:59PM -0700, Suraj N. Kurapati wrote:
> > I have a total of 9 windows and 32 panes in my saved session:
> >
> > On Fri, 28 Jun 2019 19:40:22 +0100, Nicholas Marriott wrote:
> > > Seems OK to me. How many windows, panes etc do you have?
> > >
> > > On Fri, Jun 28, 2019 at 11:07:39AM -0700, Suraj N. Kurapati
> > > wrote:
> > > > In particular, the VSZ has doubled in next-3.1 compared to
> > > > 3.0-rc3.
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