Queue help!

[Anti_virus]

Hi! I have a problem with queue on Zabbix Proxy.
All Items on Proxy in course of time move to Queue More than 10 minutes.

Number of hosts 4513
Number of items 56298
Number of triggers 4917
Required server performance, new values per second	202.24

3 equal proxy:
4xCPU, 4Gb.

# mysql -V
mysql  Ver 14.14 Distrib 5.1.73, for redhat-linux-gnu (x86_64) using readline 5.1

# zabbix_proxy -V
Zabbix proxy v2.2.3 (revision 44105) (7 April 2014)
Compilation time: Apr 28 2014 10:13:13

Proxy Config:

ProxyMode=0
LogFile=/tmp/zabbix_proxy.log
PidFile=/var/run/zabbix/zabbix_proxy.pid
DBName=zabbix
DBUser=zabbix
DBPassword=&&&
DBPort=3306
ProxyLocalBuffer=0
ProxyOfflineBuffer=1
HeartbeatFrequency=30
ConfigFrequency=30
DataSenderFrequency=5
StartPollers=40
StartPollersUnreachable=10
StartPingers=15
StartDiscoverers=5
CacheSize=1G
StartDBSyncers=10
HistoryCacheSize=2G
HistoryTextCacheSize=128M
Timeout=3
UnreachablePeriod=45
UnavailableDelay=60
UnreachableDelay=15
FpingLocation=/usr/sbin/fping

Server Config

LogFile=/tmp/zabbix_server.log
DBName=zabbix
DBUser=root
StartPollers=10
StartPollersUnreachable=10
StartTrappers=50
StartPingers=10
CacheSize=1G
CacheUpdateFrequency=60
StartDBSyncers=4
HistoryCacheSize=1G
TrendCacheSize=1G
HistoryTextCacheSize=1G
Timeout=20
UnreachableDelay=3

# zabbix_server -V
Zabbix server v2.2.1 (revision 40808) (09 December 2013)
Compilation time: Dec 26 2013 15:53:15

Items profile - Snmp v3, Agent, Simple Check and Discover.

Reboot, restart, remove database on proxy and create new schema's does not help ..

[Speedfight]

are there specific items that takes to long to queue?

how is your processor load? are there specific programs consuming alot of memory?
how about packet loss on your server?

[aib]

And more important question:
- How that queue looks from Proxy side?
Check the graph : Zabbix Proxy performance (Value processed by Proxy & Proxy queue)

It's the common issue with Zabbix Server which incorrectly count the Server-side queue. Server reports about hundreds and thousands items, when Proxy in real has only a couple of items which is not already sent.

Zabbix developers told that this issue will be fixed in this month (May 2014) update.