Re: head -r352341 example context on ThreadRipper 1950X: cpuset -n prefer:1 with -l 0-15 vs. -l 16-31 odd performance?

On 2019-Sep-27, at 15:22, Mark Millard wrote: > On 2019-Sep-27, at 13:52, Mark Millard wrote: > >> On 2019-Sep-27, at 12:24, Mark Johnston wrote: >> >>> On Thu, Sep 26, 2019 at 08:37:39PM -0700, Mark Millard wrote: On 2019-Sep-26, at 17:05, Mark Millard wrote:

Re: head -r352341 example context on ThreadRipper 1950X: cpuset -n prefer:1 with -l 0-15 vs. -l 16-31 odd performance?

On 2019-Sep-27, at 13:52, Mark Millard wrote: > On 2019-Sep-27, at 12:24, Mark Johnston > wrote: > >> On Thu, Sep 26, 2019 at 08:37:39PM -0700, Mark Millard wrote: >>> >>> >>> On 2019-Sep-26, at 17:05, Mark Millard >> > wrote: >>> On

Re: head -r352341 example context on ThreadRipper 1950X: cpuset -n prefer:1 with -l 0-15 vs. -l 16-31 odd performance?

On 2019-Sep-27, at 12:24, Mark Johnston wrote: > On Thu, Sep 26, 2019 at 08:37:39PM -0700, Mark Millard wrote: >> >> >> On 2019-Sep-26, at 17:05, Mark Millard wrote: >> >>> On 2019-Sep-26, at 13:29, Mark Johnston wrote: One possibility is that these are kernel memory allocations

Re: head -r352341 example context on ThreadRipper 1950X: cpuset -n prefer:1 with -l 0-15 vs. -l 16-31 odd performance?

On Thu, Sep 26, 2019 at 08:37:39PM -0700, Mark Millard wrote: > > > On 2019-Sep-26, at 17:05, Mark Millard wrote: > > > On 2019-Sep-26, at 13:29, Mark Johnston wrote: > >> One possibility is that these are kernel memory allocations occurring in > >> the context of the benchmark threads. Such

Re: head -r352341 example context on ThreadRipper 1950X: cpuset -n prefer:1 with -l 0-15 vs. -l 16-31 odd performance?

On 2019-Sep-26, at 17:05, Mark Millard wrote: > On 2019-Sep-26, at 13:29, Mark Johnston wrote: > >> On Wed, Sep 25, 2019 at 10:03:14PM -0700, Mark Millard wrote: >>> >>> >>> On 2019-Sep-25, at 20:27, Mark Millard wrote: >>> On 2019-Sep-25, at 19:26, Mark Millard wrote: >

Re: head -r352341 example context on ThreadRipper 1950X: cpuset -n prefer:1 with -l 0-15 vs. -l 16-31 odd performance?

On Wed, Sep 25, 2019 at 10:03:14PM -0700, Mark Millard wrote: > > > On 2019-Sep-25, at 20:27, Mark Millard wrote: > > > On 2019-Sep-25, at 19:26, Mark Millard wrote: > > > >> On 2019-Sep-25, at 10:02, Mark Johnston wrote: > >> > >>> On Mon, Sep 23, 2019 at 01:28:15PM -0700, Mark Millard

Re: head -r352341 example context on ThreadRipper 1950X: cpuset -n prefer:1 with -l 0-15 vs. -l 16-31 odd performance?

On 2019-Sep-25, at 20:27, Mark Millard wrote: > On 2019-Sep-25, at 19:26, Mark Millard wrote: > >> On 2019-Sep-25, at 10:02, Mark Johnston wrote: >> >>> On Mon, Sep 23, 2019 at 01:28:15PM -0700, Mark Millard via freebsd-amd64 >>> wrote: Note: I have access to only one FreeBSD amd64

Re: head -r352341 example context on ThreadRipper 1950X: cpuset -n prefer:1 with -l 0-15 vs. -l 16-31 odd performance?

On 2019-Sep-25, at 19:26, Mark Millard wrote: > On 2019-Sep-25, at 10:02, Mark Johnston wrote: > >> On Mon, Sep 23, 2019 at 01:28:15PM -0700, Mark Millard via freebsd-amd64 >> wrote: >>> Note: I have access to only one FreeBSD amd64 context, and >>> it is also my only access to a NUMA

Re: head -r352341 example context on ThreadRipper 1950X: cpuset -n prefer:1 with -l 0-15 vs. -l 16-31 odd performance?

On 2019-Sep-25, at 10:02, Mark Johnston wrote: > On Mon, Sep 23, 2019 at 01:28:15PM -0700, Mark Millard via freebsd-amd64 > wrote: >> Note: I have access to only one FreeBSD amd64 context, and >> it is also my only access to a NUMA context: 2 memory >> domains. A Threadripper 1950X context.

Re: head -r352341 example context on ThreadRipper 1950X: cpuset -n prefer:1 with -l 0-15 vs. -l 16-31 odd performance?

On Mon, Sep 23, 2019 at 01:28:15PM -0700, Mark Millard via freebsd-amd64 wrote: > Note: I have access to only one FreeBSD amd64 context, and > it is also my only access to a NUMA context: 2 memory > domains. A Threadripper 1950X context. Also: I have only > a head FreeBSD context on any

head -r352341 example context on ThreadRipper 1950X: cpuset -n prefer:1 with -l 0-15 vs. -l 16-31 odd performance?

Note: I have access to only one FreeBSD amd64 context, and it is also my only access to a NUMA context: 2 memory domains. A Threadripper 1950X context. Also: I have only a head FreeBSD context on any architecture, not 12.x or before. So I have limited compare/contrast material. I present the