Re: Howmany CPU Does FreeBSD Support ?
On 3/12/07, Ivan Voras <[EMAIL PROTECTED]> wrote: Nikolas Britton wrote: > On 3/12/07, Ivan Voras <[EMAIL PROTECTED]> wrote: >> Which happens to include all SCSI devices I've encountered... >> sigh. >> >> And it's NOT rare to see giant locked processes on a heavily loaded web >> server. >> > > No Giants Here: > arcmsr0: > mem 0xc840-0xc8400fff,0xc880-0xc8bf irq 16 at device 14.0 I've never had an ARECA card :) They use Intel's XScale I/O Processors and they can do RAID6, with RAID6 you can have two simultaneous drive failures an still be ok. Very good / fast / expensive cards... a fully decked out ARC-1280ML will set you back 2 grand, worth every penny. http://www.intel.com/design/iio/index.htm US Distributor for Areca products: http://www.topmicrousa.com/areca-raid-cards.html ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Howmany CPU Does FreeBSD Support ?
Nikolas Britton wrote: > On 3/12/07, Ivan Voras <[EMAIL PROTECTED]> wrote: >> Which happens to include all SCSI devices I've encountered... >> sigh. >> >> And it's NOT rare to see giant locked processes on a heavily loaded web >> server. >> > > No Giants Here: > arcmsr0: > mem 0xc840-0xc8400fff,0xc880-0xc8bf irq 16 at device 14.0 I've never had an ARECA card :) ciss0: port 0x3400-0x34ff mem 0xc6fee000-0xc6fe,0xc6f8-0xc6fb irq 24 at device 5.0 on pci2 ciss0: [GIANT-LOCKED] ciss0: port 0x4000-0x40ff mem 0xfdf8-0xfdff,0xfdf7-0xfdf77fff irq 16 at device 8.0 on pci19 ciss0: [GIANT-LOCKED] (it's the same driver...) ahc0: port 0xdc00-0xdcff mem 0xfea01000-0xfea01fff irq 29 at device 2.0 on pci1 ahc0: [GIANT-LOCKED] mpt0: port 0x4000-0x40ff mem 0xe801-0xe8013fff,0xe800-0xe800 irq 19 at device 4.0 on pci3 mpt0: [GIANT-LOCKED] isp0: port 0x4100-0x41ff mem 0xe8014000-0xe8014fff irq 20 at device 5.0 on pci3 isp0: [GIANT-LOCKED] Hmm, LSILogic (amrd) seems not to require GIANT... signature.asc Description: OpenPGP digital signature
Re: Howmany CPU Does FreeBSD Support ?
On 3/12/07, Ivan Voras <[EMAIL PROTECTED]> wrote: Vulpes Velox wrote: > That is only true if the process is giant locked. When look at dmesg, > look for things that say GIANT-LOCKED and those will be ones confined > to one processor. Which happens to include all SCSI devices I've encountered... sigh. And it's NOT rare to see giant locked processes on a heavily loaded web server. No Giants Here: arcmsr0: mem 0xc840-0xc8400fff,0xc880-0xc8bf irq 16 at device 14.0 on pci10 ARECA RAID ADAPTER0: Driver Version 1.20.00.13 2006-8-18 ARECA RAID ADAPTER0: FIRMWARE VERSION V1.41 2006-5-24 pass1 at arcmsr0 bus 0 target 16 lun 0 pass1: Fixed Processor SCSI-0 device da0 at arcmsr0 bus 0 target 0 lun 0 da0: Fixed Direct Access SCSI-3 device da0: 166.666MB/s transfers (83.333MHz, offset 32, 16bit), Tagged Queueing Enabled da0: 1430511MB (2929687040 512 byte sectors: 255H 63S/T 182364C) ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Howmany CPU Does FreeBSD Support ?
Vulpes Velox wrote: > That is only true if the process is giant locked. When look at dmesg, > look for things that say GIANT-LOCKED and those will be ones confined > to one processor. Which happens to include all SCSI devices I've encountered... sigh. And it's NOT rare to see giant locked processes on a heavily loaded web server. signature.asc Description: OpenPGP digital signature
Re: Howmany CPU Does FreeBSD Support ?
for machines doing mostly fileserving and routing even 2 CPUs may be not well utilized That is only true if the process is giant locked. When look at dmesg, look for things that say GIANT-LOCKED and those will be ones confined to one processor. There has been a massive push since 5 to get ride of those. top shows giant-lock RARELY when i observe my machines. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Howmany CPU Does FreeBSD Support ?
On Sat, 10 Mar 2007 22:40:47 +0100 (CET) Wojciech Puchar <[EMAIL PROTECTED]> wrote: > > I have heard it does not scale well above 4 > > to be clear. > > kernel task (disk I/O, network etc.) is always on first processor, > everything else on any CPU. > > so as long as disk I/O network and other kernel tasks are able to > fit on one processor that's OK. > > for machines doing mostly pure computing 8-16 CPU may work fine, > for machines doing mostly fileserving and routing even 2 CPUs may > be not well utilized That is only true if the process is giant locked. When look at dmesg, look for things that say GIANT-LOCKED and those will be ones confined to one processor. There has been a massive push since 5 to get ride of those. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Howmany CPU Does FreeBSD Support ?
to be clear. kernel task (disk I/O, network etc.) is always on first processor, everything else on any CPU. This is incorrect for approximately the last 7 years (it is only true for FreeBSD 4.x and below). Kris hmm.. nice. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Howmany CPU Does FreeBSD Support ?
On Sat, Mar 10, 2007 at 10:40:47PM +0100, Wojciech Puchar wrote: > >I have heard it does not scale well above 4 > > to be clear. > > kernel task (disk I/O, network etc.) is always on first processor, > everything else on any CPU. This is incorrect for approximately the last 7 years (it is only true for FreeBSD 4.x and below). Kris pgpWafo8UQ1NP.pgp Description: PGP signature
Re: Howmany CPU Does FreeBSD Support ?
I have heard it does not scale well above 4 to be clear. kernel task (disk I/O, network etc.) is always on first processor, everything else on any CPU. so as long as disk I/O network and other kernel tasks are able to fit on one processor that's OK. for machines doing mostly pure computing 8-16 CPU may work fine, for machines doing mostly fileserving and routing even 2 CPUs may be not well utilized ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Howmany CPU Does FreeBSD Support ?
It all depends on your workload. FreeBSD 7.0 will have good scaling on 8 or more CPUs on common workloads, see e.g.: http://people.freebsd.org/~kris/scaling/mysql.html Kris anyway it's worth to actually test machine before buying. even for 1 cpu systems lots of crappy motherboards/BIOSES make problems with these all "inventions" like interrupt routing etc. ending with 100Mbit/s network adapter taking 10-20% of fast CPU ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Howmany CPU Does FreeBSD Support ?
Susanth K wrote: > Dear Friends, > > Howmany CPU Does The FreeBSD 6.2 Support ? and what will be the support > in 7 The maximum number of CPUs that 6.2 will make use of is 16 (kern.smp.maxcpus: 16). I don't know if it will be raised in 7.0, but since 7.x should support UltraSPARC T1, it might. How efficient are multiple CPUs supported depends on what you want to do with them. For example, if you plan using the machine for numerically intensive tasks, efficiency is almost perfect :) signature.asc Description: OpenPGP digital signature
Re: Howmany CPU Does FreeBSD Support ?
On Sun, Mar 11, 2007 at 01:18:12AM +0800, David Schulz wrote: > I have heard it does not scale well above 4 It all depends on your workload. FreeBSD 7.0 will have good scaling on 8 or more CPUs on common workloads, see e.g.: http://people.freebsd.org/~kris/scaling/mysql.html Kris ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Howmany CPU Does FreeBSD Support ?
I have heard it does not scale well above 4 On Mar 11, 2007, at 12:45 AM, Susanth K wrote: Dear Friends, Howmany CPU Does The FreeBSD 6.2 Support ? and what will be the support in 7 THANKS IN ADVANCE Your's Truly SUSANTH K ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "freebsd-questions- [EMAIL PROTECTED]" ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Howmany CPU Does FreeBSD Support ?
Dear Friends, Howmany CPU Does The FreeBSD 6.2 Support ? and what will be the support in 7 THANKS IN ADVANCE Your's Truly SUSANTH K ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
