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Hi Michael,

Thanks for the response. I am using Solaris 2.7(SunOs 5.7).

Best regards
Sunil Raina

> -----Original Message-----
> From:
> discussion-request AT sctp.de
>
> [SMTP:discussion-request AT sctp.de]
> Sent: Thursday, November 08, 2001 4:32 PM
> To:
> discussion AT sctp.de
> Subject: discussion digest, Vol 1 #171 - 5 msgs
>
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> Today's Topics:
>
> 1. SCTP & ttcp (Florence M Fowler)
> 2. Re: SCTP & ttcp (Michael Tuexen)
> 3. SCTP compilation failure on Solaris.
> (sunil.raina AT hpsglobal.com)
> 4. RE: SCTP compilation failure on Solaris. (Tuexen Michael)
> 5. SCTP implementation and trace (Golan Regev)
>
> --__--__--
>
> Message: 1
> Date: Wed, 7 Nov 2001 15:58:52 -0500 (EST)
> From: Florence M Fowler
> <ffowler AT cs.utk.edu>
> To:
> discussion AT sctp.de
> Subject: [SCTP-Discussion] SCTP & ttcp
> Reply-To:
> discussion AT sctp.de
>
> We have downloaded your implementation of SCTP and compiled it. My
> assignment is to write a ttcp-like application to measure the
> thruput of SCTP. I am using the code from ttcp to do the calculations but
> obviously I must not know where to put the prep_timer() and read_timer()
> functions. I placed the prep_timer()--to begin timing--in the
> communicationUpNotif() function and the read_timer() to get the time
> elapsed in the shutdownCompleteNotif() function for both transmitter and
> receiver. I modeled the receiver after your discard_server and the
> transmitter is something like your echo_tool.
> Following are the numbers using ttcp:
> ./ttcp -t -s 160.91.192.149
> ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp ->
> 160.91.192.149
> ttcp-t: socket
> ttcp-t: connect
> ttcp-t: 16777216 bytes in 1.85 real seconds = 69.24 Mbit/sec +++
> ttcp-t: 16777216 bytes in 0.05 CPU seconds = 2560.00 Mbit/cpu sec
> ttcp-t: 2048 I/O calls, msec/call = 0.92, calls/sec = 1107.90
> ttcp-t: 0.0user 0.0sys 0:01real 2% 0i+0d 0maxrss 0+2pf 0+0csw
> ttcp-t: buffer address 0x8050000
>
> ./ttcp -r -s -b 200000
> ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001,
> sockbufsize=200000 tcp
> ttcp-r: socket
> ttcp-r: rcvbuf
> ttcp-r: accept from 160.91.192.165
> ttcp-r: 16777216 bytes in 1.88 real seconds = 68.19 Mbit/sec +++
> ttcp-r: 16777216 bytes in 0.80 CPU seconds = 160.00 Mbit/cpu sec
> ttcp-r: 11210 I/O calls, msec/call = 0.17, calls/sec = 5971.92
> ttcp-r: 0.0user 0.7sys 0:01real 42% 0i+0d 0maxrss 0+2pf 0+0csw
> ttcp-r: buffer address 0x8050000
>
> Following are the numbers using the SCTP implementation:
> ./scttcp -t -l 8192 -n 2048 -d 160.91.192.149 -s 160.91.192.165
> sctp-t: 16777216 bytes in 44.03 real seconds = 2.91 Mbit/sec +++
> sctp-t: 2048 I/O calls, msec/call = 22.01, calls/sec = 46.52
>
> ./scttcp -r -s 160.91.192.149
> sctp-r: 16777216 bytes in 44.03 real seconds = 2.91 Mbit/sec +++
> sctp-r: 2048 I/O calls, msec/call = 22.01, calls/sec = 46.52
>
> Also, we were wondering how we might change/increase the socket buffer
> sizes and the window sizes? I am not sure exactly how raw sockets act in
> this regard. The SCTP implementation starts out fine but then more
> than half-way thru it slows way down and begins to creep along. I just
> want to make sure I am measuring things fairly and accurately.
>
> Thank you.
>
> Florence M Fowler
>
>
>
> --__--__--
>
> Message: 2
> Date: Wed, 7 Nov 2001 22:42:46 +0100
> Subject: Re: [SCTP-Discussion] SCTP & ttcp
> From: Michael Tuexen
> <Michael.Tuexen AT micmac.franken.de>
> To:
> discussion AT sctp.de
> Reply-To:
> discussion AT sctp.de
>
> Dear all,
>
> see my comments below.
>
> Best regards
> Michael
>
> On Wednesday, November 7, 2001, at 09:58 Uhr, Florence M Fowler wrote:
>
> > We have downloaded your implementation of SCTP and compiled it. My
> > assignment is to write a ttcp-like application to measure the
> > thruput of SCTP. I am using the code from ttcp to do the calculations
> > but
> > obviously I must not know where to put the prep_timer() and read_timer()
> > functions. I placed the prep_timer()--to begin timing--in the
> > communicationUpNotif() function and the read_timer() to get the time
> > elapsed in the shutdownCompleteNotif() function for both transmitter and
> > receiver. I modeled the receiver after your discard_server and the
> > transmitter is something like your echo_tool.
> >
> The echo_tool does provide some sort of this functionality. Use the
> -M option.
> > Following are the numbers using ttcp:
> > /ttcp -t -s 160.91.192.149
> > ttcp-t: buflen=8192, nbuf=2048, align=16384/0, port=5001 tcp ->
> > 160.91.192.149
> > ttcp-t: socket
> > ttcp-t: connect
> > ttcp-t: 16777216 bytes in 1.85 real seconds = 69.24 Mbit/sec +++
> > ttcp-t: 16777216 bytes in 0.05 CPU seconds = 2560.00 Mbit/cpu sec
> > ttcp-t: 2048 I/O calls, msec/call = 0.92, calls/sec = 1107.90
> > ttcp-t: 0.0user 0.0sys 0:01real 2% 0i+0d 0maxrss 0+2pf 0+0csw
> > ttcp-t: buffer address 0x8050000
> >
> > ./ttcp -r -s -b 200000
> > ttcp-r: buflen=8192, nbuf=2048, align=16384/0, port=5001,
> > sockbufsize=200000 tcp
> > ttcp-r: socket
> > ttcp-r: rcvbuf
> > ttcp-r: accept from 160.91.192.165
> > ttcp-r: 16777216 bytes in 1.88 real seconds = 68.19 Mbit/sec +++
> > ttcp-r: 16777216 bytes in 0.80 CPU seconds = 160.00 Mbit/cpu sec
> > ttcp-r: 11210 I/O calls, msec/call = 0.17, calls/sec = 5971.92
> > ttcp-r: 0.0user 0.7sys 0:01real 42% 0i+0d 0maxrss 0+2pf 0+0csw
> > ttcp-r: buffer address 0x8050000
> >
> > Following are the numbers using the SCTP implementation:
> > /scttcp -t -l 8192 -n 2048 -d 160.91.192.149 -s 160.91.192.165
> > sctp-t: 16777216 bytes in 44.03 real seconds = 2.91 Mbit/sec +++
> > sctp-t: 2048 I/O calls, msec/call = 22.01, calls/sec = 46.52
> >
> > ./scttcp -r -s 160.91.192.149
> > sctp-r: 16777216 bytes in 44.03 real seconds = 2.91 Mbit/sec +++
> > sctp-r: 2048 I/O calls, msec/call = 22.01, calls/sec = 46.52
> >
> > Also, we were wondering how we might change/increase the socket buffer
> > sizes and the window sizes? I am not sure exactly how raw sockets act
> > in
> > this regard. The SCTP implementation starts out fine but then more
> > than half-way thru it slows way down and begins to creep along. I just
> > want to make sure I am measuring things fairly and accurately.
> >
> In pre14 is a bug which results in this slowdown. It will be fixed in
> pre15. In general, you should try to monitor the CPU usage and the link
> usage to see what the limiting resource is. Tests with the current code
> (which will be published as pre15) saturated a 100MBit link. If neither
> the CPU nor the link
> is the limiting factor, you should inject more packets and/or increase
> the buffer
> size for raw sockets. On FreeBSD you can do this using, for example
> sysctl -w net.inet.raw.recvspace=16000
> I do not know how you do this under Linux, but the sctplib will try to
> increase
> it automatically for you.
> But you should note that this is a prototype implementation which was
> never and is not optimized for speed. So you can use it to study the
> performance of the
> protocol but is not fair to extrapolate measurements from this prototype
> to
> kernel implementations of SCTP.
>
> Best regards
> Michael
> > Thank you.
> >
> > Florence M Fowler
> >
> >
> > _______________________________________________
> > discussion mailing list
> > discussion AT sctp.de
> > http://www.sctp.de/mailman/listinfo/discussion
> >
> Michael.Tuexen AT micmac.franken.de
>
>
> --__--__--
>
> Message: 3
> From:
> sunil.raina AT hpsglobal.com
> To:
> discussion AT sctp.de
> Date: Thu, 8 Nov 2001 14:00:37 +0530
> Subject: [SCTP-Discussion] SCTP compilation failure on Solaris.
> Reply-To:
> discussion AT sctp.de
>
> Hi,
>
> I tried to compile the curent version of sctplib on Solaris i.e.,
> sctplib-1.0.0-pre14, which is supposed to run on Solaris as well. But the
> "adaptation.c" file is failing because the function "adl_recv_message"
> tries
> to initialize two members of the "msghdr" structure which are defined
> under
> the condition
> "#if defined(_XPG4_2) || defined(_KERNEL)" in the
> "/usr/include/sys/socket.h" file.
> Can somebody help me out. Do I need to define something to get rid of this
> problem or my system is lacking something.
>
> Regards
> Sunil Raina
>
> --__--__--
>
> Message: 4
> From: Tuexen Michael
> <Michael.Tuexen AT icn.siemens.de>
> To:
> "'discussion AT sctp.de'"
>
> <discussion AT sctp.de>
> Subject: RE: [SCTP-Discussion] SCTP compilation failure on Solaris.
> Date: Thu, 8 Nov 2001 09:40:56 +0100
> Reply-To:
> discussion AT sctp.de
>
> Hi,
> what version of Solaris are you using?
> Best regards
> Michael
>
> Michael Tuexen Tel.: +49 89 722 47210
> Siemens AG Fax: +49 89 722 48212
> ICN WN CS SE 5 E-mail:
> Michael.Tuexen AT icn.siemens.de
>
> > -----Original Message-----
> > From:
> > sunil.raina AT hpsglobal.com
> >
> > [SMTP:sunil.raina AT hpsglobal.com]
> > Sent: Thursday, November 08, 2001 9:31 AM
> > To:
> > discussion AT sctp.de
> > Subject: [SCTP-Discussion] SCTP compilation failure on Solaris.
> > Importance: High
> >
> > Hi,
> >
> > I tried to compile the curent version of sctplib on Solaris i.e.,
> > sctplib-1.0.0-pre14, which is supposed to run on Solaris as well. But
> the
> > "adaptation.c" file is failing because the function "adl_recv_message"
> tries
> > to initialize two members of the "msghdr" structure which are defined
> under
> > the condition
> > "#if defined(_XPG4_2) || defined(_KERNEL)" in the
> > "/usr/include/sys/socket.h" file.
> > Can somebody help me out. Do I need to define something to get rid of
> this
> > problem or my system is lacking something.
> >
> > Regards
> > Sunil Raina
> > _______________________________________________
> > discussion mailing list
> > discussion AT sctp.de
> > http://www.sctp.de/mailman/listinfo/discussion
>
> --__--__--
>
> Message: 5
> charset="iso-8859-1"
> Date: Thu, 8 Nov 2001 12:34:55 +0200
> From: "Golan Regev"
> <golanr AT airslide.com>
> To:
> <discussion AT sctp.de>
> Cc:
> <sigtran AT standards.nortelnetworks.com>,
>
> <tsvwg AT ietf.org>
> Subject: [SCTP-Discussion] SCTP implementation and trace
> Reply-To:
> discussion AT sctp.de
>
> Hi,
>
> You can find a nice FREE analyzing tool for SCTP&M2PA in link below:
>
> http://www.airslide.com/download_sigtran_analyzer.html
>
> Best Regards
>
> Golan Regev
>
> Airslide Systems - www.airslide.com
>
>
> -----Original Message-----
> From: Michael Tuexen
> [mailto:Michael.Tuexen AT micmac.franken.de]
> Sent: Saturday, November 03, 2001 8:09 PM
> To:
> discussion AT sctp.de
> Cc:
> bindu_sundaresan AT hotmail.com
> Subject: Re: [SCTP-Discussion] SCTP implementation and trace
>
>
> Dear Bindu,
>
> to learn about the packets I would recommend to use the packet tracer
> ethereal which is available at www.ethereal.com and which supports
> SCTP.
>
> The trace/log files generated by our sctp prototype are more for
> debugging the implementation than for understanding the packets or
> protocols.
>
> You can use the example programs of our distribution to generate
> traces with ethereal.
>
> Best regards
> Michael
>
> On Friday, November 2, 2001, at 06:58 Uhr, Bindu Sundaresan wrote:
>
> > Hi,
> > I would like to know how i can view a trace file of SCTP in order to=20
> > learn more about the packets.
> > Please let me know.
> > Thanks
> > Regards,
> > Bindu
> >
> > Bindu Sundaresan
> > 1, Residential drive
> > #264,
> > Utica, NY-13502
> > Phone:315-351-3211
> >
> >
>
>
> --__--__--
>
> _______________________________________________
> discussion mailing list
> discussion AT sctp.de
> http://www.sctp.de/mailman/listinfo/discussion
>
>
> End of discussion Digest_______________________________________________
> discussion mailing list
> discussion AT sctp.de
> http://www.sctp.de/mailman/listinfo/discussion

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• [SCTP-Discussion] RE: discussion digest, Vol 1 #171 - 5 msgs, sunil . raina, 11/08/2001
  • <Possible follow-up(s)>
  • [SCTP-Discussion] Re: discussion digest, Vol 1 #171 - 5 msgs, Bindu Sundaresan, 11/08/2001

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