in $(seq 10); do echo "test $i";rm -rf /var/lib/apt/lists/*; for j in 1 2; do time apt-get update 1>/dev/null; done; echo;done

test 1

real	1m9.262s
user	0m13.264s
sys	0m1.468s

real	0m18.571s
user	0m6.772s
sys	0m0.288s

test 2

real	1m6.149s
user	0m11.796s
sys	0m1.200s

real	0m21.172s
user	0m6.904s
sys	0m0.404s

test 3

real	1m48.142s
user	0m12.344s
sys	0m1.176s

real	0m19.520s
user	0m6.720s
sys	0m0.304s

test 4

real	1m8.946s
user	0m11.932s
sys	0m1.156s

real	0m18.447s
user	0m6.544s
sys	0m0.344s

test 5

real	0m56.148s
user	0m11.392s
sys	0m1.244s

real	0m18.485s
user	0m6.740s
sys	0m0.400s

test 6

real	0m57.202s
user	0m11.604s
sys	0m1.120s

real	0m18.221s
user	0m6.636s
sys	0m0.360s

test 7

real	0m56.399s
user	0m11.328s
sys	0m1.340s

real	0m18.333s
user	0m6.560s
sys	0m0.360s

test 8

real	0m56.245s
user	0m11.348s
sys	0m1.240s

real	0m18.627s
user	0m6.728s
sys	0m0.360s

test 9

real	0m58.318s
user	0m11.632s
sys	0m1.060s

real	0m18.604s
user	0m6.692s
sys	0m0.296s

test 10

real	0m58.019s
user	0m11.760s
sys	0m1.188s

real	0m18.923s
user	0m6.728s
sys	0m0.340s