Re: how to saturate 100Mbit
On Sat, Dec 13, 2003 at 01:06:19AM -0500, Clark Gaylord wrote: > >Is it possible to saturate 100Mbit ethernet using FreeBSD 4.9-STABLE, > >Pentium-133 & Intel 430VX-based motherboard (PCI-33), > >Intel 82559 Pro/100 Ethernet (fxp) ? > >I tried to use sendfile(2) on /dev/zero but that does not work. > >Then I created 8Tb holey file and used sendfile() on it. > >That gave 100% CPU load and only 37Mbit/s on wire. > I usually use ttcp for tcp throughput measurement. You may not be able > to do 100Mbps, due to tcp-ness, but it has a udp mode as well. Depends > on what you are interested in doing. But ttcp is pretty low impact. > Also, when you use it, boost the buffersize; this can help performance > (and lower cpu hit) considerably. Will ttcp or iperf use zero-copy mechanics like sendfile(2) or they will make CPU load by copying from/to kernel space? I made another attempt: set sendspace/recvspace for TCP/UDP to 65536, mounted filesystem using NFS over UDP with -r 65536, -w 65536 and ran from NFS client: dd if=holey-file of=/dev/null bs=10m I've got about 30% of CPU load for the server (P-133) and less than 35mbit/s on wire. Eugene Grosbein ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: how to saturate 100Mbit
>> dd if=holey-file of=/dev/null bs=10m > > I've got about 30% of CPU load for the server (P-133) and less than > 35mbit/s on wire. Also you can try to dump traffic with tcpdump and send it with /usr/ports/net/tcpreplay I'm trying to send 100Mbit/s for 5-6 minutes with Ethernet frame size at 64 bytes, but I need very good hardware to make this. ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Fwd: 5.2-RC + ipfw
Hello,
on 5.2-RC I get this error from ipfw:
ipfw in free(): error: modified (chunk -) pointer
Aboirt trap (core dumped)
examining my firewall script I noticed that error occurs when ipfw try to
load this rules
fwcmd="/sbin/ipfw -q/"
${fwcmd} add 310 set 1 deny ip from $bad_guys to any in recv ep0
${fwcmd} add 310 set 2 deny ip from any to $bad_guys out via ep0
badguys are:
bad_guys="(\
127.0.0.0/8 or \
192.168.0.1/16 or \
10.0.0.0/8 or \
172.16.0.0/12 or \
0.0.0.0/8 or \
169.254.0.0/16 or \
192.0.2.0/24 or \
224.0.0.0/4 \
)"
anyway, according to `ipfw sh` output the rules are loaded.
Bye Bye
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RE: how to saturate 100Mbit
From: DrumFire [mailto:[EMAIL PROTECTED] > > >> dd if=holey-file of=/dev/null bs=10m > > > > I've got about 30% of CPU load for the server (P-133) and less than > > 35mbit/s on wire. > > Also you can try to dump traffic with tcpdump and send it with > > /usr/ports/net/tcpreplay > > I'm trying to send 100Mbit/s for 5-6 minutes with Ethernet > frame size at > 64 bytes, but I need very good hardware to make this. There is a netgraph module called ng_source which can do this. It can achieve about 400Kpps or >1Gbps on a xeon system with a gigabit card, should be able to saturate a fxp. ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: how to saturate 100Mbit
On Sat, Dec 13, 2003 at 10:50:33AM -0500, Don Bowman wrote: ... > There is a netgraph module called ng_source which can do this. > It can achieve about 400Kpps or >1Gbps on a xeon system with > a gigabit card, should be able to saturate a fxp. the fxp has a problem which does not allow it to go above 103/110/120kpps depending on which descriptor model you use, no matter how fast the CPU is. Even not using any special kernel modules, a simple loop over a sendto() on a udp socket can achieve around 500kpps on a 2.4GHz box (em or bge). With some tricks and a sufficiently fast PCI bus you can reach some 750kpps but then it really depends on how fast is your PCI bus. cheers luigi > [EMAIL PROTECTED] mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "[EMAIL PROTECTED]" ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Fwd: 5.2-RC + ipfw
[ CC: Luigi ]
On Sat, 13 Dec 2003, 11:49-, Nate Grey wrote:
> Hello,
>
> on 5.2-RC I get this error from ipfw:
>
> ipfw in free(): error: modified (chunk -) pointer
> Aboirt trap (core dumped)
>
> examining my firewall script I noticed that error occurs when ipfw try to
> load this rules
>
> fwcmd="/sbin/ipfw -q/"
> ${fwcmd} add 310 set 1 deny ip from $bad_guys to any in recv ep0
> ${fwcmd} add 310 set 2 deny ip from any to $bad_guys out via ep0
>
> badguys are:
>
> bad_guys="(\
> 127.0.0.0/8 or \
> 192.168.0.1/16 or \
> 10.0.0.0/8 or \
> 172.16.0.0/12 or \
> 0.0.0.0/8 or \
> 169.254.0.0/16 or \
> 192.0.2.0/24 or \
> 224.0.0.0/4 \
> )"
>
> anyway, according to `ipfw sh` output the rules are loaded.
Please try an enclosed patch or put a whitespace right after the '('
before '\'.
Index: ipfw2.c
===
RCS file: /home/ncvs/src/sbin/ipfw/ipfw2.c,v
retrieving revision 1.42
diff -u -r1.42 ipfw2.c
--- ipfw2.c 31 Oct 2003 18:31:55 - 1.42
+++ ipfw2.c 13 Dec 2003 18:42:18 -
@@ -2901,15 +2901,14 @@
goto done;
#define OR_START(target) \
- if (ac && (*av[0] == '(' || *av[0] == '{')) { \
+ if (ac && ( \
+ !strncmp(*av, "(", strlen(*av)) || \
+ !strncmp(*av, "{", strlen(*av)) )) {\
if (open_par) \
errx(EX_USAGE, "nested \"(\" not allowed\n"); \
prev = NULL;\
open_par = 1; \
- if ( (av[0])[1] == '\0') { \
- ac--; av++; \
- } else \
- (*av)++;\
+ ac--; av++; \
} \
target: \
%%%
--
Maxim Konovalov, [EMAIL PROTECTED], [EMAIL PROTECTED]
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Auth + Sendmail help please
Hi freebsd-net@ folk. I've been having problems trying to simultaneously configure my 4.9 home client gateway & my remote 24/7 server to provide an Auth + SASL outgoing sendmail channel. My fault not FreeBSD's but I'm asking for help. One problem is I dont have a known good server or client to test the other half against. Another problem is too many options - each end :-) I'd much appreciate if some kind volunteer could either: A) Give me a temporary account for my sendmail client on their server (not even a login, I've got plenty of those thanks, just a `proper' SASL + Auth + Sendmail, (& it's easy to check I'm not a spammer seeking a relay, hit Google with my name & you'll see what I'm known for, better or worse :-) or B) I give you a temporary account on my half baked server, you point your client at it, wait for it to blow, & tell me what I've got wrong (Yes I can give you a full login so you can look yourself if you want.) Whichever, if either or both I'm offered please :-) I've read lots of docs, not restricted to (but just listing some) /usr/share/sendmail/cf/README http://docs.snake.de/smtp-auth.html http://home.leo.org/~barner/freebsd/articles/mailsetup/article.html http://www.sendmail.org/~ca/email/cyrus/sysadmin.html http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/smtp-auth.html & tried SASL2 & then SASL1, Ive tried SASL passwords & direct /etc/passwd type. I think I've tried most or all of ports/security/ cyrus-sasl cyrus-sasl2 cyrus-sasl2-saslauthd but I think not yet mail/sendmail-sasl My background .m4 files (both ends) are mastered from http://berklix.org/~jhs/src/bsd/fixes/FreeBSD/src/jhs/etc/sendmail/common.cpp My current error report is server end: AUTH warning: no mechanisms >From contrib/sendmail/src/srvrsmtp.c:3992 I have all of /usr/lib/sasl/Sendmail.conf -> ../../../site/usr/lib/sasl/Sendmail.conf /usr/local/lib/sasl/Sendmail.conf -> ../../../../site/usr/lib/sasl/Sendmail.conf /usr/local/lib/sasl2/Sendmail.conf -> ../../../../site/usr/lib/sasl/Sendmail.conf Are symbolic links acceptable ? Can Sendmail.conf contain comment lines beginning with hash char ? Any help appreciated, please ! Thanks ! - Julian Stacey. Munich Unix C & Net Services Consultant. http://berklix.com Mail in Ascii plain text; HTML mail is dumped with Spam. Ihr Rauchen => mein allergischer Kopfschmerz ! Schnupftabak probieren. Software Patents ? Vampires would approve ! http://berklix.com/jhs/patents ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: how to saturate 100Mbit
On Sat, Dec 13, 2003 at 10:17:06AM -0800, Luigi Rizzo wrote: > the fxp has a problem which does not allow it to go above 103/110/120kpps > depending on which descriptor model you use, no matter how fast > the CPU is. Can you explain the problem, please? > Even not using any special kernel modules, a simple loop over > a sendto() on a udp socket can achieve around 500kpps on a 2.4GHz > box (em or bge). With some tricks and a sufficiently fast PCI > bus you can reach some 750kpps but then it really depends > on how fast is your PCI bus. 100*1024*1024/8/1500=8738.1(3) It seems one does not need hundred of thousand pps to achive 100Mbps. EUgene ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "[EMAIL PROTECTED]"
