Hi All ,
Still i can't fixed this UDP_HTABLE_SIZE issue...:((
As , going by the last correspondence on this issue i have changed the
kernel value to 32768 from 128 (this was the pre-set value in my Kernel) and
recompiled my Ubuntu 9.10 kernel version 2.6.31-22-generic. I have already
changed my Kernel Timer Frequency to 1000 Hz.
But now when i recompiled the kernel and tried to load the new recompiled
kernel its giving me error "Kernel Panick-Unable to load kernel".
I guess the mistake i have made is that , the value 32768 given in the IMS
Bench SIPp webpage is for another linux kernel and it is not suitable for my
Kernel version which is for Ubuntu 9.10 Karmic.
Now my question is , can anyone kindly suggest me what possible value i can
put in this UDP_HTABLE_SIZE constant. I am really a bit lost on this issue.
Will be eagerly waiting for any reply ,
Regards ,
Sougata
On Wed, Oct 27, 2010 at 8:10 PM, Buriez, Patrice
<patrice.bur...@intel.com>wrote:
> Hi Sougata,
>
> Please find details about this at second bullet of:
> http://sipp.sourceforge.net/ims_bench/reference.html#Pre-requisites
> Basically, you need to modify the definition of the UDP_HTABLE_SIZE
> constant.
> In "old" kernels, this constant was defined in include/net/udp.h, in the
> kernel source tree (where you typed make menuconfig to setup 1000 Hz).
> In more recent kernels, this constant seems to be defined in
> include/linux/udp.h, in the kernel source tree.
>
> Please note that IMS Bench SIPp has only been tested on Linux Fedora Core 6
> and on RedHat Enterprise Linux 4 Update 4, so running it on more recent
> kernel on Ubuntu 9.10 has not been validated.
>
> Regards,
> Patrice
>
> ------------------------------
> *From:* sougata pal [mailto:sougata....@gmail.com]
> *Sent:* Wednesday, October 27, 2010 3:51 PM
> *To:* Simonart, Xavier
>
> *Cc:* sipp_users
> *Subject:* Re: [Sipp-users] Fwd: SIPp IMS Bench : Query on Virtual IP
> Config on Test System
>
> Hi All ,
>
> I am a bit confused regarding how to increase this UDP_HTABLE_SIZE. I mean
> where can i find this file to increase it size? I am using UBUNTU Linux 9.10
> Karmic. I have increased the kernel timer frequency to 1000 Hz already but
> how to do this change regarding to increase the UDP_HTABLE_SIZE?
>
> Can anyone kindly help me in this issue , how to resolve this?
>
> Regards ,
>
> Sougata
>
> On Mon, Oct 25, 2010 at 5:11 PM, Simonart, Xavier <
> xavier.simon...@intel.com> wrote:
>
>> Hi,
>>
>>
>>
>> I have not tried running IMS Bench SIPP with many IP per SIPP instance.
>>
>> But the following scenario works for us: one IP per SIPP instance, 4 SIPP
>> instances, and 25K ports per SIPP instance. Hence you would need 4 IPs (or
>> virtual IPs). This way you can simulate 100K users per system, each users
>> being represented with its own IP/port combination.
>>
>> As mentioned in the doc, as you use many users per system, you might have
>> to change UDP_HTABLE_SIZE in include/net/udp.h and rebuild the kernel of the
>> system running the IMS Bench SIPP, for performance reasons.
>>
>>
>>
>> -Xavier
>>
>>
>> ------------------------------
>>
>> *From:* Peter Higginson [mailto:plh...@hotmail.com]
>> *Sent:* lundi 25 octobre 2010 14:34
>> *To:* sougata....@gmail.com
>> *Cc:* sipp_users
>>
>> *Subject:* Re: [Sipp-users] Fwd: SIPp IMS Bench : Query on Virtual IP
>> Config on Test System
>>
>>
>>
>> Sougata,
>>
>> It is a couple of years since I worked on this. If you want to generate
>> traffic apparently from 100K real users, then you need to have that traffic
>> appear to come from 100K different IP addresses. If you are not bothered
>> about emulating all the IP addresses then there is no problem - SIPp will
>> use a small number of IP addresses and ports and distinguish the calls using
>> the Call-ID. You can measure the space used per Call-ID and work out how big
>> a machine you need to avoid disk swapping. (We needed to go to 1G for 100K
>> calls.)
>>
>> The problems only come with large numbers of IP addresses. I mentioned
>> some below and also many devices have a limit of 64K on the size of the ARP
>> table. We ended up writing our own code to emulate being a router with lots
>> of IP addresses behind it. That way we only needed a few ARP entries (both
>> for the test device and the DUT) and we could keep a small indexed table for
>> the IP addresses.
>>
>> Hope that helps,
>> Peter
>>
>> ------------------------------
>>
>> Date: Mon, 25 Oct 2010 12:48:39 +0200
>> Subject: Re: [Sipp-users] Fwd: SIPp IMS Bench : Query on Virtual IP Config
>> on Test System
>> From: sougata....@gmail.com
>> To: plh...@hotmail.com
>> CC: sipp-users@lists.sourceforge.net
>>
>> Hi Peter ,
>>
>> Can you elaborate a bit more regarding , why i need to be lucky to make
>> this set-up work?
>> I have decided to go for 1 IP address per SIPp instance. So as i want to
>> have 2 SIPp instances , i want to have 2 virtual IP's configure on the
>> network interface card. This 2 SIPp instances needs to generate 100,000
>> users each.
>>
>> As stated in my first mail , i have connected both the PC's with Cat 5
>> cable. I hope this set-up works.
>>
>> Btw , how did you solve this issue in your case , as you said being
>> outside of SIPp.?
>>
>> Regards ,
>>
>> Sougata
>>
>> On Mon, Oct 25, 2010 at 11:52 AM, Peter Higginson <plh...@hotmail.com>
>> wrote:
>>
>>
>> My personal experience with the base SIPp (rather than IMS bench) is that
>> you will be very lucky to make this work. If you are thinking of multiple
>> instances, then it is fairly easy to measure the data space per instance (or
>> per call) and multiply it by the number of instances and see if you have
>> enough real memory to do that. In either case, each IP address and each UDP
>> port has an overhead in the OS and they will mount up. We found that Linux
>> just slowed to a crawl with more than 20K IP addresses and UDP ports in use.
>> There is also a C library limit (10K from memory) that limits the number of
>> streams per process (you can recompile the library but we never went there).
>>
>> We did solve the problem, but outside of SIPp.
>>
>> Peter
>>
>> ------------------------------
>>
>> Date: Mon, 25 Oct 2010 11:18:00 +0200
>> From: sougata....@gmail.com
>>
>>
>> To: sipp-users@lists.sourceforge.net
>>
>> Subject: [Sipp-users] Fwd: SIPp IMS Bench : Query on Virtual IP Config on
>> Test System
>>
>>
>>
>> HI All ,
>>
>> Any SUGGESTION on my this query??
>> ITS A BIT URGENT..... !!!
>>
>> Regards ,
>>
>> Sougata
>>
>> ---------- Forwarded message ----------
>> From: *sougata pal* <sougata....@gmail.com>
>> Date: Fri, Oct 22, 2010 at 7:23 PM
>> Subject: [Sipp-users] SIPp IMS Bench : Query on Virtual IP Config on Test
>> System
>> To: sipp-users@lists.sourceforge.net
>>
>>
>> Hi All ,
>>
>>
>> I want to configure multiple IP address on my Test System which will
>> generate traffic for near about 200,000 users for my SUT where i have
>> installed OpenIMSCore. Now as i see the pre-requisites in the IMS Bench SIPp
>> installation procedure there its written " The actual number of IP addresses
>> to configure will depend on the transport option you select: a single IP
>> address per SIPp instance, in which case you need many IP addresses as
>> you'll run SIPp instances on a same physical system, or multiple IP
>> addresses per SIPp instance in which case you will want plenty of IP
>> addresses."
>>
>> Now in my Test System i want to have 2 SIPp instances , each of whom will
>> be generating 100,000 users traffic.
>>
>> So , now my question is which transport option will be suitable for me?
>> Shall i go for 1 IP address per SIPp instance , or i keep only one single
>> SIPp instance having 100,000 IP addresses?
>>
>> Secondly , connecting both the Pc's , my TEST SYSTEM and my Desktop
>> running OPenIMSCore ( SUT) , i am using CAT 5 cable connector. Will that be
>> suitable for conencting? I have installed 2 separate network adapters for
>> this case in both the PC's.
>>
>> Any suggestion on this scenario will be very helpful ,
>>
>> Regards ,
>>
>> Sougata
>>
>>
>>
>>
>>
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> Intel Corporation NV/SA
> Kings Square, Veldkant 31
> 2550 Kontich
> RPM (Bruxelles) 0415.497.718.
> Citibank, Brussels, account 570/1031255/09
>
> This e-mail and any attachments may contain confidential material for the
> sole use of the intended recipient(s). Any review or distribution by others
> is strictly prohibited. If you are not the intended recipient, please
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