17 Mar
2014
17 Mar
'14
10:36 p.m.
On Mon, Mar 17, 2014 at 10:16:35PM +0000, Ian wrote:
It's on this PC rather than on a server, but
apt-get has become
incredibly slow recently. Reading the package lists is taking many
minutes - using time to see how long 'sudo apt-get update' takes reckons
it's
Fetched 115 kB in 6s (17.7 kB/s)
Reading package lists... Done
real 28m27.642s
user 0m19.944s
sys 0m7.828s
The root partition with /var/lib/dpkg is on an SSD drive, which has
80+GiB free space and is regularly 'trimmed'. There's nothing using an
enormous amount of CPU or disk access. Even large applications are quick
to start.
Any ideas as to why this is happening?
Your network seems slow, but says it took 6s... so there is still a gap to fill
for 30s. I don't know if maybe those 6s don't take into account some network
delay, like reverse DNS queries or something like that. I would make sure the
mirror is a "decent" one (i.e. maybe change it just to test to some really
used mirror) and the DNS servers you are using are working fine (can try with
opendns or google DNS servers to be sure).
If that is not it, maybe run it with perf and also see what "vmstat 1" and
top/perf top look while it's running ?
Hope it helps,
Rodrigo