Eugene, Are you sure your using streams pipes on HPUX? Streams based pipes are an option in HPUX and you have to rebuild the kernel from scratch with appropriate options set to enable them at all.
--brian On Fri, 09 Apr 2004, Eugene LiS User wrote: > I ran both tests on the same uniprocessor system, > so lock agenda should not be applicable, I think. > > Also, the same test run on HPUX(stream based pipes) performs > 2 times faster than streams based pipes on Linux. > > We all missing something, I guess. > > > Dave Grothe <[EMAIL PROTECTED]> wrote: > > >It has always been known (I think) that there is a huge difference in speed > >between Linux native pipes and streams based pipes via LiS. > > > >I have seen similar results sending UDP datagrams through the Linux > >loopback driver using native sockets vs the inet driver that Brian > >publishes. I get about a 10:1 ratio between sockets and streams. > > > >Nothing has ever jumped out at me when I run oprofile during these tests -- > >except lock contention. Which is what I am working on now. > > > >-- Dave > > > >At 11:58 AM 4/9/2004, Eugene LiS User wrote: > > > >>To exclude my module from the picture I have decided to compare > >>data pumping rates for the pipe interface. > >>I have googled pipespeed2 program, downloaded it and with a minor changes > >>got it compiled in 2 versions with and without LiS. > >> > >>The results are as following: > >> > >># ./ps2 2000k 4k > >>ps2 -x 1 2048000 4096 9.163 Seconds -- 915.493 MB/sec > >> > >># ./ps2lis 2000k 4k > >>ps2lis -x 1 2048000 4096 45.602 Seconds -- 183.953 MB/sec > >> > >>Clearly there is some overhead in the LiS version of a pipe. > >>[Hopefuly [for my module] that overhead is not only pipe related] > >> > >>Attached is a programm. > >> > >>Compiling with LiS: > >> > >> > >># cc -I/usr/src/LiS/include -L /usr/src/LiS/libc -lLiS -o ps2lis pipespeed2.c > >> > >>Compiling without LiS: > >> > >># cc -o ps2 pipespeed2.c > >> > >> > >> > >> > >> > >>__________________________________________________________________ > >>Introducing the New Netscape Internet Service. > >>Only $9.95 a month -- Sign up today at http://isp.netscape.com/register > >> > >>Netscape. Just the Net You Need. > >> > >>New! Netscape Toolbar for Internet Explorer > >>Search from anywhere on the Web and block those annoying pop-ups. > >>Download now at http://channels.netscape.com/ns/search/install.jsp > >> > >> > >> > >>--- > >>Incoming mail is certified Virus Free. > >>Checked by AVG anti-virus system (http://www.grisoft.com). > >>Version: 6.0.655 / Virus Database: 420 - Release Date: 4/8/2004 > > > > > > __________________________________________________________________ > Introducing the New Netscape Internet Service. > Only $9.95 a month -- Sign up today at http://isp.netscape.com/register > > Netscape. Just the Net You Need. > > New! Netscape Toolbar for Internet Explorer > Search from anywhere on the Web and block those annoying pop-ups. > Download now at http://channels.netscape.com/ns/search/install.jsp > _______________________________________________ > Linux-streams mailing list > [EMAIL PROTECTED] > http://gsyc.escet.urjc.es/mailman/listinfo/linux-streams -- Brian F. G. Bidulock � The reasonable man adapts himself to the � [EMAIL PROTECTED] � world; the unreasonable one persists in � http://www.openss7.org/ � trying to adapt the world to himself. � � Therefore all progress depends on the � � unreasonable man. -- George Bernard Shaw � _______________________________________________ Linux-streams mailing list [EMAIL PROTECTED] http://gsyc.escet.urjc.es/mailman/listinfo/linux-streams
