Hi David,
> This is new, after the latest pacman update along with 4.6.13, when
> running
> $ pacman -Qi somepackage
> for the first time it takes 15 seconds for any response.
I've always found it sluggish if its data isn't cached in RAM.
`vmstat 1' shows one core is pegged out waiting for I/O; the `wa'
column.
The I/O is the reading of 814 /var/lib/pacman/local/*/desc.
$ LC_ALL=C strace -c pacman -Qi ed
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
50.40 0.157668 185 853 openat
35.51 0.111096 67 1670 read
6.27 0.019606 23 853 close
5.48 0.017140 20 856 fstat
0.76 0.002383 34 70 mmap
First run of `\time -v pacman -Qi ed' v. second, boring lines deleted.
Command being timed "pacman -Qi ed" "pacman -Qi ed"
User time (seconds) 0.10 0.06
System time (seconds) 0.29 0.02
Percent of CPU this job got 2% 96%
Elapsed (wall clock) time 0:14.70 0:00.08
Voluntary context switches 1786 0
Involuntary context switches 26 16
File system inputs 34768 0
File system outputs 0 0
--
Cheers, Ralph.
https://plus.google.com/+RalphCorderoy
