Using archlinux
related topic on arch forum https://bbs.archlinux.org/viewtopic.php?pid=1602417#p1602417

After linux kernel update I found that file transfers through loopback (lo) network interface suddenly hangs. It's seems that it's related to parameter timer_resolution.

I test it this way:
1) change timer_resolution value
2) restart nginx
3) clear cache (sync && echo 3 > /proc/sys/vm/drop_caches)
4) try download file with wget from localhost

if set timer_resolution to 500ms - downloading hangs after ~500ms
if set timer_resolution to 10ms - downloading hangs after ~10ms
if I comment out timer_resolution - no freezes

Is it a bug, feature or misconfiguration?