+1 that would be nice. Any updates?

This should fix the problem (more or less like #17, but applied manually after the installation):

SYSSTAT_SCRIPTS_DIR="$HOME"/.tmux/plugins/tmux-plugin-sysstat/scripts
cd "$SYSSTAT_SCRIPTS_DIR"
sed -i 's/%.[01]f%%/%2.0f%%/g' {cpu,mem,swap}.sh

SYSSTAT_SCRIPTS_DIR is where the files cpu.sh, mem.sh and swap.sh are located, it is usually:

~/.tmux/plugins/tmux-plugin-sysstat/scripts

or

~/.config/tmux/plugins/tmux-plugin-sysstat/scripts

Cheers

Thanks for taking a look. I tried it out and it works. The only downside that I see for this fix is that if CPU usage is low (less than 10%) the script is still reserving a 2 character space even if you remove the floating point, so you end up with
Original: "CPU: 5.5%"
Modified: "CPU: 5%"
(Ideally I think it should be "CPU: 5%", without the extra space)
But it's a really particular use case.

@tuv7041 Actually the padding is intentional (as requested in this issue): the CPU usage percentage value varies from X to XX, it causes the status widget to change the width a lot ("CPU" moves its position in the status bar from time to time when this happens), what I think is very distracting. The padding avoids this.

Cheers

oh, sorry, my bad. I commented here a long time ago and forgot about the context (I was more focused on the decimal than the padding). Thanks again for fixing it.