To reproduce, run `xterm -geometry 80x12 &`, and in that xterm
run `irqtop`. See that the table of IRQs is empty at first,
apart from the string "(null)" -- like this:
IRQ TOTAL DELTA NAME
(null)
After three seconds a list of IRQs appears.
Now open the window's menu (probably with Alt+Space) and choose
Resize. Then press the right arrow key in a steady rhythm of
twice per second. See that "(null)" gets shown almost constantly
at the start of the table.
Then reverse direction: keep pressing <Left> twice per second.
The "(null)" does not appear any more. Then reverse direction
again: pressing <Right> twice per second. The "(null)" will be
shown again as soon as you've reached a width you hadn't reached
before.
I can reproduce this on three similar 64-bit machines, but not
on an old 32-bit machine.
When using -S or -t2222 (which reduce the number of shown IRQs),
then the table appears right away. Other options have no effect.
Commenting out the call of scols_table_enable_maxout(table, 1)
allowed the table to appear straightaway on my default terminal,
which made it seem that something is going wrong in libsmartcols.
So I did an `export LIBSMARTCOLS_DEBUG=all` in the shell, but
irqtop produced zero debugging output. Only after adding a call
to scols_init_debug(0) in the main{} of irqtop, did it start
producing debugging output. But it is verbose, and I don't know
what I'm looking for, so I've attached the result of:
./irqtop -c disable 2>TRAIL
on an `xterm -geometry 80x12`, where I've pressed q as soon as
the table did appear after three full seconds.
Benno
Attachment:
TRAIL.gz
Description: application/gzip
Attachment:
OpenPGP_signature.asc
Description: OpenPGP digital signature
