Lag spikes

lag_spikes

Bus 002 Device 012: ID 0cf3:7015 Atheros Communications, Inc. TP-Link TL-WN821N v3 802.11n [Atheros AR7010+AR9287]

$ readlink /sys/class/net/wlan0/device/driver
../../../../../../../../bus/usb/drivers/ath9k_htc

$ modinfo ath9k_htc 
filename:       /lib/modules/3.8.0-27-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k_htc.ko
firmware:       htc_9271.fw
firmware:       htc_7010.fw
description:    Atheros driver 802.11n HTC based wireless devices
license:        Dual BSD/GPL
author:         Atheros Communications
srcversion:     F15900ADDD68298A1163C27
alias:          usb:v0CF3p20FFd*dc*dsc*dp*ic*isc*ip*in*
depends:        ath9k_hw,ath9k_common,mac80211,ath,cfg80211
intree:         Y
vermagic:       3.8.0-27-generic SMP mod_unload modversions 
parm:           debug:Debugging mask (uint)
parm:           nohwcrypt:Disable hardware encryption (int)
parm:           btcoex_enable:Enable wifi-BT coexistence (int)


64 bytes from 192.168.1.1: icmp_req=80 ttl=64 time=1.31 ms
64 bytes from 192.168.1.1: icmp_req=81 ttl=64 time=4.61 ms
64 bytes from 192.168.1.1: icmp_req=82 ttl=64 time=1.23 ms
64 bytes from 192.168.1.1: icmp_req=83 ttl=64 time=1.22 ms
64 bytes from 192.168.1.1: icmp_req=84 ttl=64 time=4.47 ms
64 bytes from 192.168.1.1: icmp_req=85 ttl=64 time=1.30 ms
64 bytes from 192.168.1.1: icmp_req=86 ttl=64 time=1.22 ms
64 bytes from 192.168.1.1: icmp_req=87 ttl=64 time=1.32 ms
64 bytes from 192.168.1.1: icmp_req=88 ttl=64 time=1.24 ms
64 bytes from 192.168.1.1: icmp_req=89 ttl=64 time=1.24 ms
64 bytes from 192.168.1.1: icmp_req=90 ttl=64 time=6.97 ms
64 bytes from 192.168.1.1: icmp_req=91 ttl=64 time=1.27 ms
64 bytes from 192.168.1.1: icmp_req=92 ttl=64 time=228 ms
64 bytes from 192.168.1.1: icmp_req=93 ttl=64 time=202 ms
64 bytes from 192.168.1.1: icmp_req=94 ttl=64 time=305 ms
64 bytes from 192.168.1.1: icmp_req=95 ttl=64 time=300 ms
64 bytes from 192.168.1.1: icmp_req=96 ttl=64 time=386 ms
64 bytes from 192.168.1.1: icmp_req=97 ttl=64 time=1.28 ms
64 bytes from 192.168.1.1: icmp_req=98 ttl=64 time=1.32 ms
64 bytes from 192.168.1.1: icmp_req=99 ttl=64 time=3.59 ms
64 bytes from 192.168.1.1: icmp_req=100 ttl=64 time=1.32 ms
64 bytes from 192.168.1.1: icmp_req=101 ttl=64 time=1.93 ms
64 bytes from 192.168.1.1: icmp_req=102 ttl=64 time=1.33 ms
64 bytes from 192.168.1.1: icmp_req=103 ttl=64 time=3.31 ms
64 bytes from 192.168.1.1: icmp_req=104 ttl=64 time=1.27 ms
64 bytes from 192.168.1.1: icmp_req=105 ttl=64 time=1.33 ms
64 bytes from 192.168.1.1: icmp_req=106 ttl=64 time=1.68 ms
64 bytes from 192.168.1.1: icmp_req=107 ttl=64 time=1.18 ms
64 bytes from 192.168.1.1: icmp_req=108 ttl=64 time=1.93 ms
64 bytes from 192.168.1.1: icmp_req=109 ttl=64 time=1.18 ms
64 bytes from 192.168.1.1: icmp_req=110 ttl=64 time=1.21 ms
64 bytes from 192.168.1.1: icmp_req=111 ttl=64 time=1.24 ms