🚀 go-pugleaf

Jamie Zawinski writes:

   When a folder has >500 messages, VM's startup time is substantial.
   On a Sparc2 with a folder of about 900 messages, it looks like
   reading the file is about 6 seconds, VMifying it is about 20
   seconds, and generating a summary is over a minute.
   
I bet there are a lot of messages in that folder that don't have the
magic X-VM-v5-Data header.  I regularly visit a folder that has about
600 messages in it, and the time it takes VM to build the summary is
maybe 4 or 5 seconds.  This is on a diskless Sun 4 running off a
fairly slow server, so the total time to open the folder is about 10
seconds.

When I first started using VM 5.31 I found that the summary for my
recently added messages was computed very quickly, whereas the summary
for my older messages took as long to compute as it did under VM 4.41.
So I cleverly told VM to create a digest out of all the messages
(which seemed a safe and effective way to get it to create an
X-VM-v5-Data header for each), then I edited the file behind VM's back
to remove all the "Z" statuses.  A kludge, yes, but it resulted in a
folder that opened quite a bit faster.

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