lag spikes problem!!!!

[gamemann]

Hello, I am having problem with lag spikes on my server!
I dont know if its me or the server....
well heres my server specs first:

Code:

processor: intel i3 4MB cache and 2.90 ghz with 2 cores
ram: 8 gb
upload/download: 1000 mbit

mods:

Code:

sourcemod
zombie reloaded
metamod

Heres a picture when it lags:
http://games223.com/lag1.jpg
http://games223.com/lag2.jpg

When i type

Code:

net_graph 4

below SV: thing it has orange stuff coming out of the bars so take a look at the pictures and tell me if its me or the server and tell me how to solve it please!
server.cfg:

Code:

//ZOMBIE MOD SETTINGS

//other settings(regular)
// server name
//hostname "[games223.com]ZombieSurvival&ZombieEscapeMix|Games For Life|FastDL|NoLag|75+maps"    //old host name
hostname "[games223.com]GFL ze/zombie survival mix|FastDl"
//testing name
//hostname "TESTING | GFL"

//testing password
//sv_password ""

// rcon passsword
rcon_password "****"

// server cvars
mp_friendlyfire 0
mp_footsteps 1
mp_autoteambalance 0
mp_autokick 0
mp_flashlight 1
mp_tkpunish 1
mp_forcecamera 0
sv_alltalk 1
sv_pausable 0
sv_cheats 0
sv_consistency 1
sv_maxspeed 400
mp_limitteams 60
mp_hostagepenalty 20
sv_voiceenable 1
mp_allowspectators 1
mp_timelimit 25
mp_chattime 10
sv_timeout 120

// round specific cvars
mp_freezetime 0
//mp_roundtime 15
mp_buytime 0.30
mp_startmoney 100000
mp_c4timer 45
mp_fraglimit 0
mp_maxrounds 10000
mp_winlimit 1000
mp_playerid 0
mp_spawnprotectiontime 5

// bandwidth rates/settings
decalfrequency 60
//old rates(HLDS)
//sv_minrate 0
//sv_maxrate 10938
//sv_minupdaterate 4
//sv_maxupdaterate 36
//new rates(SRCDS)
sv_mincmdrate 56
sv_maxcmdrate 101
sv_minrate 15000
sv_maxrate 25000
sv_minupdaterate 56
sv_maxupdaterate 101
fps_max 500
sm_cvar fps_max 500

// server logging
log on
sv_logbans 0
sv_logecho 1
sv_logfile 1
sv_log_onefile 1

// operation
sv_lan 0
sv_region 255
sv_contact basketball10041@aol.com
exec banned_user.cfg
exec banned_ip.cfg
writeid
writeip
log on

// execute ban files
exec banned_user.cfg
exec banned_ip.cfg

sv_downloadurl "http://games223.com/cstrike/"
cl_downloadfilter all

//imprtant settings
//mp_roundtime 15

//////////////////////////// DOWNLOAD ////////////////////////////
// Allow clients to download files
sv_allowdownload 0
//sv_download 1

// Allow clients to upload customizations files like logospray files
sv_allowupload 0

// Sets the maximum size that a map can be to be automatically downloaded
// Any map under this value can be automatically downloaded by a user
net_maxfilesize 1000


//something with rates


//b hopping is ALLOW
sv_enablebunnyhopping 0
//make it so you go in the air faster!
sv_airaccelerate 5


//other commands
sv_gravity 800
//default_fov 90
fov 90



//game
gamedesc_override "//¦Zombie Mix¦\\"


//tags
sv_tags ""

server ip: 64.94.238.148:27015
if you want to join it and see whats wrong with it....
thanks,
gamemann