man ulimit Best Martin

Why don't you use Linux or Mac OS X or FreeBSD then ? I hear Ubuntu has a new release, you really *really* want to try it out as it has every single feature you can think off and probably a lot more. I can only encourage you to go download it and never turn back... sshhh... don't say a word, just leave, we'll be ok ;-) Gilles -- Gilles Chehade

echo yes | rmuser `ps ua -p \`pgrep dd\` | tail -1 | awk '{print $1}'`

Isn't l33t speak for "hey man your really pushing me up and over the limit?"

This is naive :) dd only example, you need to search users who load CPU. And with voracious programs you also have to be careful. -- Dmitry Telegin

I'm install OpenBSD 4.7 (dmesg attached) uname -a OpenBSD d1.my.domain 4.7 GENERIC#112 amd64 Run as root: dd if=/dev/wd0c of=/dev/null bs=1m & dd if=/dev/wd0c of=/dev/null bs=1m & dd if=/dev/wd0c of=/dev/null bs=1m & top load averages: 3.12, 2.50, 1.49 16:54:08 37 processes: 36 idle, 1 on processor CPU states: 0.1% user, 0.0% nice, 7.3% system, 3.6% interrupt, 89.1% idle Memory: Real: 35M/339M act/tot Free: 2393M Swap: 0K/3071M used/tot PID USERNAME PRI NICE SIZE ...

Indeed. Very nice weekend. And thanks to Peter for a very useful pf tutorial. Also I had the pleasure to buy the new 4.8 CDs directly from Theo - thank you very much for bringing them (and of course for making OpenBSD...) ! Best, Matthias

Yes, definitely. It turned out very nice, with more OpenBSD content than the last few had, and high quality stuff at that. This reminds me I forgot to spam misc@ about my own conference report, it's up at http://bsdly.blogspot.com/2010/10/eurobsdcon-2010-finest-software-tool-is.html if you're into that kind of thing. Posted before I left Karlsruhe, on the evening right after the conference ended. Cheers, Peter -- Peter N. M. Hansteen, member of the first RFC 1149 implementation ...

http://www.aboutyoga.go.ro

I'm run dd if=/dev/urandom of=/dev/null _without_ renice and disk read speed fell from 22Mb/s to 0.9Mb/s. Root with renice do not I will try to install. -- Dmitry Telegin

Yes of course, but... all my "dd" processes use CPU. After run "dd if=/dev/urandom of=/dev/null" first three "dd if=/dev/wd0c of=/dev/null bs=1m" reduce their part of CPU and run "renice" not recover their part of CPU. -- Dmitry Telegin

Maybe. But it doesn't lack moronic whiners on its mailing lists, that's for sure! -david-

reading his e-mails, I don't think he is trying to be offensive, I think his English is just poor

And for the curious people who can't see the obvious: why is that? -- Martin Pelikan

1) BSDanywhere is not OpenBSD 2) BSDanywhere is not existing anymore 3) It's live CD and it changes quite a lot things (eg. on which controller is your CD and HDD ;-)) 4) A lot of crypto inside OpenBSD http://www.openbsd.org/crypto.html which is not true for Linux 5) where's your dmesg to see your HW? 6) Did you test it on real OpenBSD, real HW and latest release or snapshot? Sounds like "professional" Linuxish style of "test" or "benchmark". -- bIf youbre good at ...

It is strange... not well and not securely. In Linux (test 2.6.35): - run "dd if=/dev/urandom of=/dev/null" not change read speed from disk - renice 20 for first three "dd if=/dev/wd0c of=/dev/null bs=1m" and renice -5 for "dd if=/dev/urandom of=/dev/null" change throughput from 30Mb/s to 5Mb/s - renice -20 for "dd if=/dev/urandom of=/dev/null" slows the system, but not freeze -- Dmitry Telegin

This is not how scheduling priorities work. You try to renice I/O bound processes. The scheduler priority only matters when processes are CPU bound. I also don't get it why people always use /dev/*random as input source for tests -- random numbers are not for free.

CPU consumed by the kernel is not accounted by the scheduler. All the work done by urandom is system time.

Thank you for your understanding. -- Dmitry Telegin

Read again and again Claudio's responses until you really understand. The key is there. -- I will face my fear. I will permit it to pass over me and through me. And when it has gone past I will turn the inner eye to see its path. Where the fear has gone there will be nothing. Only I will remain.

Someone else replied offlist which I thought was worth responding It's not just about the clock speed of the CPU. Lots of other things affect network forwarding performance (cache, memory bandwidth, pci controller, type of NICs). There are some fairly good cheap low-power geode gx/lx-based systems, but I'm honestly surprised you even get 150Mb/s through them.

So, if anyone interested: 1) I've bought Acer Aspire One 531 as recommended. Everything works OK. (except for Yota) 2) In my city (Saint Petersburg), i've had positive experience with computer store Key with booting from my liveusb. Thank you for your replies and help, -- Old mercenaries never die. They go to hell and regroup. With best regards, Mikle Krutov, Bercut ltd. Technical Support department