Re: asymmetric smp

2014-05-05 Thread Matthew Mondor
On Mon, 5 May 2014 01:10:24 -0400 Matthew Mondor mm_li...@pulsar-zone.net wrote: which some CPUs might have trouble with (i.e. RAS)... I think that what I meant was CAS -- Matt

Re: asymmetric smp

2014-05-04 Thread Matthew Mondor
On Wed, 02 Apr 2014 17:21:02 +0200 Johnny Billquist b...@softjar.se wrote: On 2014-04-02 16:10, John Nemeth wrote: On Apr 2, 1:55pm, Johnny Billquist wrote: } The root fs in on nfs, as I'm running the machine diskless. Disk is } served from a -current NetBSD/alpha system sitting right

Re: asymmetric smp

2014-04-02 Thread Johnny Billquist
On 2014-04-01 23:04, Warner Losh wrote: On Apr 1, 2014, at 5:49 AM, Johnny Billquist b...@softjar.se wrote: Good points. Is this the right time to ask why booting NetBSD on a VAX (a 3500) now takes more than 15 minutes? What is the system doing all that time??? FreeBSD used to take forever

Re: asymmetric smp

2014-04-02 Thread Martin Husemann
On Wed, Apr 02, 2014 at 01:55:04PM +0200, Johnny Billquist wrote: The time between entering a username and getting the password prompt in the same 3500 with the latest release is something like 30 seconds. Mostly it needs someone with an affected machine to debug it. My bet would be on PAM

Re: asymmetric smp

2014-04-02 Thread Johnny Billquist
On 2014-04-02 14:00, Martin Husemann wrote: On Wed, Apr 02, 2014 at 01:55:04PM +0200, Johnny Billquist wrote: The time between entering a username and getting the password prompt in the same 3500 with the latest release is something like 30 seconds. Mostly it needs someone with an affected

Re: asymmetric smp

2014-04-02 Thread Martin Husemann
On Wed, Apr 02, 2014 at 03:13:19PM +0200, Johnny Billquist wrote: What model of VAX do you have, and how long does it take to boot, to the point where you get the login prompt on the console? VS4000/M96 with 128 MB, and local scsi disk - very nice machine ;-) Didn't measure exactly right now,

Re: asymmetric smp

2014-04-02 Thread Anders Magnusson
Martin Husemann skrev 2014-04-02 15:33: On Wed, Apr 02, 2014 at 03:13:19PM +0200, Johnny Billquist wrote: What model of VAX do you have, and how long does it take to boot, to the point where you get the login prompt on the console? VS4000/M96 with 128 MB, and local scsi disk - very nice

Re: asymmetric smp

2014-04-02 Thread John Nemeth
On Apr 2, 1:55pm, Johnny Billquist wrote: } On 2014-04-01 23:04, Warner Losh wrote: } On Apr 1, 2014, at 5:49 AM, Johnny Billquist b...@softjar.se wrote: } } Good points. } Is this the right time to ask why booting NetBSD on a VAX (a 3500) now takes more than 15 minutes? What is the system

Re: asymmetric smp

2014-04-02 Thread Johnny Billquist
On 2014-04-02 15:38, Anders Magnusson wrote: Martin Husemann skrev 2014-04-02 15:33: On Wed, Apr 02, 2014 at 03:13:19PM +0200, Johnny Billquist wrote: What model of VAX do you have, and how long does it take to boot, to the point where you get the login prompt on the console? VS4000/M96 with

Re: asymmetric smp

2014-04-02 Thread Johnny Billquist
On 2014-04-02 16:10, John Nemeth wrote: On Apr 2, 1:55pm, Johnny Billquist wrote: } The root fs in on nfs, as I'm running the machine diskless. Disk is } served from a -current NetBSD/alpha system sitting right next to it. And } I have changed the Alpha to run at 10 MB/s half duplex, and I have

Re: asymmetric smp

2014-04-01 Thread Johnny Billquist
On 2014-04-01 01:47, Erik Fair wrote: On Mar 27, 2014, at 11:29 , matthew green m...@eterna.com.au wrote: it certainly can be improved for this situation, but i've got an SS10 with mis-matched cpus (2x100mhz, 1x150mhz, the latter with a bigger cache and thus significantly faster than the

Re: asymmetric smp

2014-04-01 Thread Warner Losh
On Apr 1, 2014, at 5:49 AM, Johnny Billquist b...@softjar.se wrote: Good points. Is this the right time to ask why booting NetBSD on a VAX (a 3500) now takes more than 15 minutes? What is the system doing all that time??? FreeBSD used to take forever to boot on certain low-end ARM CPUs with

Re: asymmetric smp

2014-03-31 Thread Erik Fair
On Mar 27, 2014, at 11:29 , matthew green m...@eterna.com.au wrote: it certainly can be improved for this situation, but i've got an SS10 with mis-matched cpus (2x100mhz, 1x150mhz, the latter with a bigger cache and thus significantly faster than the other cpus) and it works pretty fine.

Re: asymmetric smp

2014-03-27 Thread Ignatios Souvatzis
On Wed, Mar 26, 2014 at 07:32:24PM -0700, Matt Thomas wrote: I recently ordered an ODROID-XU Lite to help beat on the my ARM MP code. Ah... for a second I thought you want to add support for the VAX 11/782. -is

Re: asymmetric smp

2014-03-27 Thread Justin Cormack
On Mar 27, 2014 2:32 AM, Matt Thomas m...@3am-software.com wrote: I recently ordered an ODROID-XU Lite to help beat on the my ARM MP code. However, it has a quirk that I don't think our scheduler will deal with. It has 4 Cortex-A15 cores @ 1.4Ghz and 4 Cortex-A7 cores @ 1.2Ghz. Even if the

re: asymmetric smp

2014-03-27 Thread matthew green
However, it has a quirk that I don't think our scheduler will deal with. It has 4 Cortex-A15 cores @ 1.4Ghz and 4 Cortex-A7 cores @ 1.2Ghz. Even if the frequencies weren't different, the A15 cores at least twice as fast per cycle than the A7. That asymmetry is going to cause havoc with