Re: Tuning FreBSD with specific applications
Alle 22:35, giovedì 02 giugno 2005, Mark Bucciarelli ha scritto: On Thu, Jun 02, 2005 at 10:17:13PM +0200, Vittorio De Martino wrote: How could I obtain those improvements? What could I do to speed those programs under freebsd? - Edit /etc/make.conf and set the processor and compiler optimizations. - Rebuild and install system (world and kernel) - Repost your results here. ;) The BSD handbook has good docs on the last step of this process. Coming from Gentoo, you probably have a good idea what to do in the first step. There is an example make.conf somewhere on you system you can look at for other things to set. If you want to get really detailed, look at the Makefile for R in it's ports directory. There may be some notes as to configure options and performance. FWIU, every port can have it's own set of configure options, and there is a way to put conditionals inside make.conf; for example, if in this ports directory, set this option. I haven't used that yet, but if you search the archives here you will find an example. BTW, don't mess around with the new scheduler. Just use the old BSD one. I did some testing (recompiled gcc) and the old one was faster on a dual processor system. From what someone told me on #freebsd, it works but is not optimized yet. Also, there are somethings you should do when testing speed. You can google to find the references, here's the two items I remember: - use single user mode (no cron) - unplug network cable (no broadcast packets) Have fun! Mark, after some other trial I decided in the end to concentrate on an application, R, trying to extract the best out of it in term of performance. That's why I deinstalled both in gentoo and in freebsd R, downloaded the 2.0.1 source tarball from the r-project , compiled it in both OSs with the same configuration and options. Now it happens that one test program working only in memory is executed in almost the same time in linux and in freebsd (a bit longer under win xp). Another R test program working mainly in memory but producing a lot of output on the screen of the text console, works happily and fast in linux bash console whilst in freebsd csh console I see the R program to start happily and the output flowing rapidly on the screen, after some time it starts slowing down, then clogging. In the end it takes twice as much time to complete with respect to gentoo! Could the difference be the bash in linux and csh in freebsd shell? Suggestions? Vittorio ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Tuning FreBSD with specific applications
On Jun 3, 2005, at 1:02 PM, Vittorio De Martino wrote: Could the difference be the bash in linux and csh in freebsd shell? Suggestions? FreeBSD has a bash port and there is also the tcsh and zsf and probably other shells. Of course there is /bin/sh Go ahead and switch shells (can do it with vipw if you want to eliminate an underlying shell running or at runtime by just executing the shell) and see if it makes a difference. Chad ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Tuning FreBSD with specific applications
On Thursday 02 June 2005 13:17, the author Vittorio De Martino contributed to the dialogue on- Tuning FreBSD with specific applications: First of all: I DO NOT WANT TO START A FLAME! On my laptop I've being using linux for some years now and landed at last to the gentoo distribution which I tuned for working with the statistical software R and the bunch of TeX programs such as latex, pdflatex, context and the likes (this absorb 95% of my activity on the linux box). The main action I took with gentoo was to compile everything from scratch for my pc hardware, limiting the use of X kde using all the above mentioned software prevailingly in a simple console. Now in a partition of the same laptop I installed freebsd 5.4, set softupdates, dma=1, and the same pieces of software as those I had installed under linux using the ports, therefore, compiling everything for my pc hardware, but, owing to my poor knowledge of Freebsd I'm experiencing some problems. In a nutshell I prepared the following test files: 1) a ConTeXt file full of long (useless) chapters and pictures to run with texexec; 2) An R program which reads a long text file, puts the data in dataframes, then loops to accomplish many repetitive mathematical calculations. Now running the test files in a console linux turns out to be roughly 20-25% faster than freebsd. Particulary slow results the loop phase of the R source code that while running slows down and seems to clog in the end. The slowing down is also perceptible under linux but not at the same level. Admiring the ordered and unitary layout of freebsd, the logical way of setting it up, the richness of applications, I would like to line the freebsd installation up to the linux one, improving its performance at most, not necessarily making it faster than linux. How could I obtain those improvements? What could I do to speed those programs under freebsd? here is a start: www.lyris.com/products/listmanager/ fox_pro/tuning_freebsd.pdf - David ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] -- 40 yrs navigating and computing in blue waters. English Owner Captain of British Registered 60' bluewater Ketch S/V Taurus. Currently in San Diego, CA. Sailing May/June bound for Europe via Panama Canal. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Tuning FreBSD with specific applications
On Thu, Jun 02, 2005 at 10:17:13PM +0200, Vittorio De Martino wrote: How could I obtain those improvements? What could I do to speed those programs under freebsd? - Edit /etc/make.conf and set the processor and compiler optimizations. - Rebuild and install system (world and kernel) - Repost your results here. ;) The BSD handbook has good docs on the last step of this process. Coming from Gentoo, you probably have a good idea what to do in the first step. There is an example make.conf somewhere on you system you can look at for other things to set. If you want to get really detailed, look at the Makefile for R in it's ports directory. There may be some notes as to configure options and performance. FWIU, every port can have it's own set of configure options, and there is a way to put conditionals inside make.conf; for example, if in this ports directory, set this option. I haven't used that yet, but if you search the archives here you will find an example. BTW, don't mess around with the new scheduler. Just use the old BSD one. I did some testing (recompiled gcc) and the old one was faster on a dual processor system. From what someone told me on #freebsd, it works but is not optimized yet. Also, there are somethings you should do when testing speed. You can google to find the references, here's the two items I remember: - use single user mode (no cron) - unplug network cable (no broadcast packets) Have fun! m ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: Tuning FreBSD with specific applications
Vittorio De Martino [EMAIL PROTECTED] writes: How could I obtain those improvements? What could I do to speed those programs under freebsd? Well, it can be hard to say, but in this case the kernel shouldn't have much to do with the speed of the applications (which will be pretty much CPU-bound for the programs you specified), so it's unlikely that you need to tune FreeBSD as opposed to your userland software. You said that you built the software by hand, the same way for both the Linux and FreeBSD case; which compilers were used in each case? ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
