Date: Thu, 19 Jun 2014 20:40:48 +0800 From: "=?gb18030?B?1cXqzw==?=" <zganghanhan@foxmail.com> To: "=?gb18030?B?ZnJlZWJzZC1uZXQ=?=" <freebsd-net@freebsd.org> Subject: pow function in kernel space Message-ID: <tencent_34C23E3A7E7FDFEA644A3392@qq.com> In-Reply-To: <mailman.75.1403092802.14182.freebsd-net@freebsd.org> References: <mailman.75.1403092802.14182.freebsd-net@freebsd.org>
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how can I implement, in an efficient, way the pow() function in kernel space ? Is there any function I can use o r how I can evaluate pow function in kernel model? Thanks! ------------------ ×£ºÃ£¬ ÕÅêÏ ---------- HanZhang School of Computer Science Tsinghua University, Beijing, 100084, P.R.CHINA Mobile: +86 156-526-59782 E-mail: zhanghan@csnet1.cs.tsinghua.edu.cn ------------------ Original ------------------ From: "freebsd-net-request";<freebsd-net-request@freebsd.org>; Date: Wed, Jun 18, 2014 08:00 PM To: "freebsd-net"<freebsd-net@freebsd.org>; Subject: freebsd-net Digest, Vol 585, Issue 3 Send freebsd-net mailing list submissions to freebsd-net@freebsd.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.freebsd.org/mailman/listinfo/freebsd-net or, via email, send a message with subject or body 'help' to freebsd-net-request@freebsd.org You can reach the person managing the list at freebsd-net-owner@freebsd.org When replying, please edit your Subject line so it is more specific than "Re: Contents of freebsd-net digest..." Today's Topics: 1. Re: netmap (Carlos Ferreira) 2. Unusable Emulex "oce" driver version in -STABLE, 9.3 and CURRENT (Borja Marcos) 3. [Bug 183391] [oce] 10gigabit networking problems with Emulex OCE 11102 CNA (bugzilla-noreply@freebsd.org) 4. [Bug 183391] [oce] 10GbE networking problems with Emulex OCE 11102 CNA (bugzilla-noreply@freebsd.org) 5. [Bug 183391] [oce] 10GbE networking problems with Emulex OCE 11102 CNA (bugzilla-noreply@freebsd.org) 6. [Bug 183391] [oce] 10GbE networking problems with Emulex OCE 11102 CNA (bugzilla-noreply@freebsd.org) 7. Re: Unusable Emulex "oce" driver version in -STABLE, 9.3 and CURRENT (Borja Marcos) ---------------------------------------------------------------------- Message: 1 Date: Tue, 17 Jun 2014 15:03:30 +0100 From: Carlos Ferreira <carlosmf.pt@gmail.com> To: Luigi Rizzo <rizzo@iet.unipi.it> Cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org> Subject: Re: netmap Message-ID: <CAJpYY6XBg8=g7sjVbu+6+EG1-vW1dymsvD8pL-EB08B=_z=usA@mail.gmail.com> Content-Type: text/plain; charset=UTF-8 Great! :) I will give you the results as soon as I can get them :) On 17 June 2014 12:55, Luigi Rizzo <rizzo@iet.unipi.it> wrote: > On Mon, Jun 16, 2014 at 5:30 PM, Carlos Ferreira <carlosmf.pt@gmail.com> > wrote: > >> Ok, thanks for the enlightenment regarding the loss of performance. >> >> One question, just to be sure. Does the kernel module contains the VALA >> switch code? Or do I need to compile extra code to have the switch working? >> Also, where can I find the documentation to use the Vala Switch? >> > > ?VALE is part of the netmap kernel module, the only thing you need > to know to use it is port names: > you can have multiple switch instances with multiple ports each, > > valeX:Y means port Y on switch X, X and Y are arbitrary strings > with the constraint that the whole name must fit 15 characters. > > Details in the netmap manpage > > cheers > luigi > > -- Carlos Miguel Ferreira Researcher at Telecommunications Institute Aveiro - Portugal Work E-mail - cmf@av.it.pt Skype & GTalk -> carlosmf.pt@gmail.com LinkedIn -> http://www.linkedin.com/in/carlosmferreira ------------------------------ Message: 2 Date: Tue, 17 Jun 2014 18:07:45 +0200 From: Borja Marcos <borjam@sarenet.es> To: Stable Stable <freebsd-stable@freebsd.org> Cc: freebsd-net@freebsd.org Subject: Unusable Emulex "oce" driver version in -STABLE, 9.3 and CURRENT Message-ID: <8D93EDF7-AC0E-4707-AC62-55CBD5F3358D@sarenet.es> Content-Type: text/plain; charset=us-ascii Hello, This should be fixed before the release of 9.3, and of course as soon as possible for the rest of the branches. At least under 10-STABLE the "oce" driver can cause a panic when there's a lot of network traffic. I have been able to reproduce it using "iperf". Sometimes the panic can be triggered within seconds of starting an iperf test. There's a new driver available for download on the Emulex site, version 10.0.747.0, and it works perfectly. The source code compiles perfectly under FreeBSD 10-STABLE (at least recent versions since April) and the kernel module loads without trouble. There's a bug report covering this but seems to be forgotten :/ https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=183391 Thanks! Borja. ------------------------------ Message: 3 Date: Tue, 17 Jun 2014 23:38:42 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-net@FreeBSD.org Subject: [Bug 183391] [oce] 10gigabit networking problems with Emulex OCE 11102 CNA Message-ID: <bug-183391-2472-zejSX1HlEm@https.bugs.freebsd.org/bugzilla/> Content-Type: text/plain; charset="UTF-8" https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=183391 Kubilay Kocak <koobs@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |koobs@FreeBSD.org Version|unspecified |9.2-RELEASE --- Comment #7 from Kubilay Kocak <koobs@FreeBSD.org> --- Please attach: * /var/run/dmesg.boot output * pciconf pciconf -lveV -- You are receiving this mail because: You are the assignee for the bug. ------------------------------ Message: 4 Date: Tue, 17 Jun 2014 23:59:09 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-net@FreeBSD.org Subject: [Bug 183391] [oce] 10GbE networking problems with Emulex OCE 11102 CNA Message-ID: <bug-183391-2472-N1qWbY8iyV@https.bugs.freebsd.org/bugzilla/> Content-Type: text/plain; charset="UTF-8" https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=183391 Kubilay Kocak <koobs@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mlavkin@gmail.com Summary|[oce] 10gigabit networking |[oce] 10GbE networking |problems with Emulex OCE |problems with Emulex OCE |11102 CNA |11102 CNA --- Comment #8 from Kubilay Kocak <koobs@FreeBSD.org> --- Pataki, Borjan, MLavkin, We need a confirmation that this issue (panic) is still present on 9.3-BETA3 in order to get this into 9.3-RELEASE. We have a very short window until -RELEASE, if one of you could provide that confirmation, it will go a long way. -- You are receiving this mail because: You are the assignee for the bug. ------------------------------ Message: 5 Date: Wed, 18 Jun 2014 02:20:30 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-net@FreeBSD.org Subject: [Bug 183391] [oce] 10GbE networking problems with Emulex OCE 11102 CNA Message-ID: <bug-183391-2472-USJ2pWrEab@https.bugs.freebsd.org/bugzilla/> Content-Type: text/plain; charset="UTF-8" https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=183391 --- Comment #9 from pataki.antal@gmail.com --- (In reply to Kubilay Kocak from comment #7) > Please attach: > > * /var/run/dmesg.boot output > * pciconf pciconf -lveV Hi! I am so sorry, but we didn't kept the unusable system from 2013 october until today.... The system is upgraded to 9.2-STABLE and the Emulex cards fired out and replaced with Intel X520 cards. Like this, the system is operating good - in a production environment, so it is not possible to change the hardware or the operating system. So I can't send you the dmesg.boot from 2013 october with the emulex card on fbsd 9.2-RELEASE, I am sorry. -- You are receiving this mail because: You are the assignee for the bug. ------------------------------ Message: 6 Date: Wed, 18 Jun 2014 02:23:27 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-net@FreeBSD.org Subject: [Bug 183391] [oce] 10GbE networking problems with Emulex OCE 11102 CNA Message-ID: <bug-183391-2472-AUBNIV7z6U@https.bugs.freebsd.org/bugzilla/> Content-Type: text/plain; charset="UTF-8" https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=183391 --- Comment #10 from pataki.antal@gmail.com --- Like my previous reply, I can't confirm this, because we workarounded the bug in a way. (upgraded to freebsd 9.2-stable and the emulex cards are changed to intel x520 cards) I am so sorry, we couldn't wait for about 8 months for any solution, we needed to use the servers in production - we spent many thousands of dollars for that, not for keeping them in the corner. I hope you understood. (In reply to Kubilay Kocak from comment #8) > Pataki, Borjan, MLavkin, > > We need a confirmation that this issue (panic) is still present on 9.3-BETA3 > in order to get this into 9.3-RELEASE. > > We have a very short window until -RELEASE, if one of you could provide that > confirmation, it will go a long way. -- You are receiving this mail because: You are the assignee for the bug. ------------------------------ Message: 7 Date: Wed, 18 Jun 2014 09:35:26 +0200 From: Borja Marcos <borjam@sarenet.es> To: Borja Marcos <borjam@sarenet.es> Cc: freebsd-net@freebsd.org, Stable Stable <freebsd-stable@freebsd.org> Subject: Re: Unusable Emulex "oce" driver version in -STABLE, 9.3 and CURRENT Message-ID: <E0656BDA-56B1-4B77-B949-F1973B82385F@sarenet.es> Content-Type: text/plain; charset=us-ascii On Jun 17, 2014, at 6:07 PM, Borja Marcos wrote: > > Hello, > > This should be fixed before the release of 9.3, and of course as soon as possible for the rest of the branches. > > At least under 10-STABLE the "oce" driver can cause a panic when there's a lot of network traffic. I have been able to reproduce it > using "iperf". Sometimes the panic can be triggered within seconds of starting an iperf test. > > There's a new driver available for download on the Emulex site, version 10.0.747.0, and it works perfectly. The source code compiles perfectly > under FreeBSD 10-STABLE (at least recent versions since April) and the kernel module loads without trouble. > > There's a bug report covering this but seems to be forgotten :/ > > https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=183391 In my case, the problem manifests itself running 10. Emulex provides a more recent driver which compiles perfectly and works perfectly (if we can safely assume that a weekend saturating a couple of interfaces runnning benchmarks with no glitches is a good hint). I am now installing the latest beta of 9.3 to see if I can reproduce the panic. I will follow-up in a couple of hours if possible. Borja. ------------------------------ Subject: Digest Footer _______________________________________________ freebsd-net@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-net To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" ------------------------------ End of freebsd-net Digest, Vol 585, Issue 3 ******************************************* .
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