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Goran

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When are you going to fix it?
tested version: 7.4.1, problem has been noticed since version 7.1 (appliance)

Kerio cache OFF.
Page load time 3 sec. Ping server max 1ms
Average speed 236 Kb/sec
http://img43.imageshack.us/img43/3443/cache1.png

Kerio cache ON.
Page load time 23 sec. Ping server max 754ms
Average speed 33 Kb/sec
http://img442.imageshack.us/img442/1351/cache2h.png

[Updated on: Fri, 14 December 2012 12:36]


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azzamsalman

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whats about DNS cache & Bandwidth management ???
Any possibility to have problems and low performance from them ??
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Goran

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Not, that i know it...
of course if you lower NIC bandwidth then is low Smile

I understand that cache depends on HDD speed,
but ping to server should stay < 1ms!!

Because of that they need add RAMDISK for cache.
http://forums.kerio.com/t/23493//
4GB ram on appliance server, used only MAX 512Mb. Stupid right?

[Updated on: Fri, 14 December 2012 12:39]


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azzamsalman

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Goran ... Can u answer me this question ?
when i had used kerio 6.6 with load balancing ,,, i had compiled 2 ( 4 Mbit/s links ) to had 8 Mbit/s download speed when using IDM ..
Now with kerio control 3.2 ... i can't do that
I asked u above about dns cache ... does it cause any problem to browsing performance ?
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Goran

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by my experience Load balancing on new versions work by enabling link load balancing... could be that you don't have 4mb/sec from your ISP. Try to change in interface link weight to 3.
also in setting in QOS go with interfaces little lower
4Mbits/sec = 512KBytes
better go for 500KBytes
But no. DNS cache have nothing about internet speed.

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azzamsalman

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so do u advice me to make these changes :
1 - turn of cache
2 - change the link weight from 4 to 3
3 - change the link rate in BM from 512 to 500 or 475 KB/s
or put the link rate value as it ( 4Mbit/s)
OR do u advice me to go back to kerio 6.6 ?
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azzamsalman

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notice >> about dns cache ... i don't use DHCP I JUST configured my clients with certain ips ... i wrote these to know if matter ?
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Goran

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Yes go for, cache of, weight 3 for each line, speed 500 per internet connections. test your speed without limit or above 4Mbit/s.
If you dont use DHCP maybe disable in DNS, DHCP lease table (had some problems before with this option)

if you use Kerio under windows u can make RamDisk and redirect cache folder with Symlinks. This way cache work good.

[Updated on: Sat, 15 December 2012 00:31]


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azzamsalman

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I'm installing ramdisk withe net frame work 4.5 ,,,
but about the links weight .. i put the weight for 4mbit links ( 3 ) as u told me before but i have 2mbit link also ... i will put its weight ( 2 ) >> is that correct ? .. or i must put it ( 1 ) .
and thank u goran for ur response > .
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Goran

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Symlinks is little tricky you will need time to get it work.
hmm im not sure maybe it will be the best that you make speed test for each connection couple of times, then if is less then 2 or less 4 go for 1,3 etc...

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azzamsalman

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my friend ... here in Syria we cannot get a stable dsl link what i mean is .. now the 4mbit link gives me 400 to 500 download rate but tomorrow at morning or evening we will be thankful if we get 300
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azzamsalman

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by the way ... how can i change the location of cache folder in kerio to make it in ramdisk
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Goran

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huh im sorry for you. Now you know why Kerio not work good.

Symlinks
READ ABOUT it

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azzamsalman

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ok i had read about it so >>> i must make a hard clone shortcut for the cache folder and put it in ramdisk drive that i had created
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