Have you any tests I could run to verify it's stability? Lawrence Farr EPC Direct Limited
> -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]] On Behalf Of Luigi Rizzo > Sent: 04 December 2001 06:18 > To: [EMAIL PROTECTED] > Subject: HEADS-UP: net polling code now in STABLE. > > > [Bcc to -stable because of relevance there] > > With the approval of the release engineer, a revised version of > the network polling code is now in STABLE. It would be great if > you could try it out and send feedback, so we con sort out issues > (if any) before the release of 4.5. > > Do not be afraid to upgrade, because unless you explicitly enable > the new code with the kernel option mentioned below, your kernel > will not be affected by the patch. > > The code is only for i386 architecture, non-SMP (it would be rather > useless on SMP boxes, anyways). Devices supported so far are "dc", > "fxp" and "sis". I can patch more drivers if you ask, but you need > to test the patches yourself because i do not have access to other > 100M and 1G cards (except perhaps "xl"). > [As a side note -- there have been significant performance improvement > changes to the "dc" and "sis" drivers recently, so if you have one > of these two cards, it might be worthwhile to upgrade]. > > The commit message follows. Have fun. > > cheers > luigi > > ----- Forwarded message from Luigi Rizzo <[EMAIL PROTECTED]> ----- > > Date: Mon, 3 Dec 2001 21:57:49 -0800 (PST) > From: Luigi Rizzo <[EMAIL PROTECTED]> > Subject: cvs commit: src/sys/conf options.i386 > src/sys/i386/i386 swtch.s > trap.c src/sys/net if.h netisr.h src/sys/sys systm.h > src/sys/i386/include asnames.h src/sys/kern kern_clock.c > src/sys/dev/fxp if_fxp.c src/sys/pci if_dc.c > if_dcreg.h if_sis.c ... > To: [EMAIL PROTECTED], [EMAIL PROTECTED] > > luigi 2001/12/03 21:57:49 PST > > Modified files: (Branch: RELENG_4) > sys/conf options.i386 > sys/i386/i386 swtch.s trap.c > sys/net if.h netisr.h > sys/sys systm.h > sys/i386/include asnames.h > sys/kern kern_clock.c > sys/dev/fxp if_fxp.c > sys/pci if_dc.c if_dcreg.h if_sis.c if_sisreg.h > Log: > As approved by the Release Engineer, here comes the code for polling > in network device drivers (x86, non-SMP only at the moment, for > reasons that I have extensively explained on the -net mailing list). > This code lets network devices operate in a semi-polling mode, > which makes systems much more resilient to attacks and overloads. > > If you don't enable it with an appropriate kernel option, your > kernel will be exactly the same as before this commit. No userland > code is affected. > > To use polling you have to put the following options in your kernel > config file: > > options DEVICE_POLLING > options HZ=1000 # not compulsory but strongly recommended > > and enable it at runtime as follows (by default it is disabled): > > sysctl kern.polling.enable=1 > > There are basically no other tunables related to this code, > though you might have a look at "sysctl kern.polling" to see > what other variables are there. > > The device drivers supported at the moment are "dc", "fxp" and > "sis", with more to come (but this code only makes sense for 100M > and Gigabit devices). Unmodified drivers will continue to operate > as before. > > Under little or moderate load you should see no difference in the > behaviour of your system. Under load, you should experience a > moderate improvement in peak performance, and a lot more stability > and responsiveness. > > A quick description of the files affected (all in sys/) > > conf/options.i386 > DEVICE_POLLING option > > i386/i386/swtch.s i386/i386/trap.c > hooks to call the polling code > > net/if.h net/netisr.h sys/systm.h i386/include/asnames.h > misc. constants and variable definitions (mostly one-liner). > > kern/kern_clock.c > The bulk of the polling code. Probably this code > will be moved to a > separate file once equivalent functionality is > added to -current. > > dev/fxp/if_fxp.c pci/if_dc.c pci/if_dcreg.h pci/if_sis.c > pci/if_sisreg.h > device driver modifications > > Reviewed-by: -net > Approved by: jkh > > Revision Changes Path > 1.132.2.9 +6 -1 src/sys/conf/options.i386 > 1.110.2.9 +56 -2 src/sys/dev/fxp/if_fxp.c > 1.89.2.5 +5 -1 src/sys/i386/i386/swtch.s > 1.147.2.6 +6 -1 src/sys/i386/i386/trap.c > 1.44.2.4 +2 -1 src/sys/i386/include/asnames.h > 1.105.2.5 +253 -1 src/sys/kern/kern_clock.c > 1.58.2.3 +10 -1 src/sys/net/if.h > 1.21.2.3 +2 -1 src/sys/net/netisr.h > 1.9.2.25 +72 -0 src/sys/pci/if_dc.c > 1.4.2.12 +7 -0 src/sys/pci/if_dcreg.h > 1.13.4.10 +66 -0 src/sys/pci/if_sis.c > 1.1.4.5 +3 -0 src/sys/pci/if_sisreg.h > 1.111.2.11 +14 -0 src/sys/sys/systm.h > > ----- End forwarded message ----- > > To Unsubscribe: send mail to [EMAIL PROTECTED] > with "unsubscribe freebsd-stable" in the body of the message > To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-net" in the body of the message
