Re: latency test results for armhf vs arm64?

2022-07-16 Thread Lennart Sorensen
On Sat, Jul 16, 2022 at 08:35:26PM +0200, Diederik de Haas wrote: > Raspbian(.org) was created by Peter Green (plugwash) (and Mike Thompson who's > name is still attached to raspbian(.org)'s GPG key, but otherwise moved on) > precisely because the RPi 1 did not meet the armhf/armv7

Re: latency test results for armhf vs arm64?

2022-07-16 Thread Diederik de Haas
On Saturday, 16 July 2022 18:19:31 CEST gene heskett wrote: > > You said raspios which sure looks like raspian. Raspian/Raspberry Pi > > OS is armv6. If you are running Debian armhf, then it is armv7 but it > > would be a lot less confusing to call it Debian and not raspios in > > that case. >

Re: latency test results for armhf vs arm64?

2022-07-16 Thread Matthias Klein
> Am 16.07.2022 um 18:02 schrieb gene heskett : > > I've not been > able to find another kernel src any newer that even admits to having a > realtime preempt in its config, it is conspicuously absent in anything > newer, and I am subbed to linux-rt so I see all the new stuff being > announced.

Re: latency test results for armhf vs arm64?

2022-07-16 Thread Lennart Sorensen
On Sat, Jul 16, 2022 at 12:19:31PM -0400, gene heskett wrote: > raspian/raspios is available in all 3 flavors. Oh right they do have the other ones, they are just not the ones they recommend by default. > True, but when those two seagate 2T drives puked in quick succession, I lost > all > my

Re: latency test results for armhf vs arm64?

2022-07-16 Thread gene heskett
On 7/16/22 11:32, Lennart Sorensen wrote: On Sat, Jul 16, 2022 at 08:41:07AM -0400, gene heskett wrote: I wish you would admit that the raspios I am running IS armhf (kernel7l) I've no clue where you got the impression it was v6. It is not. You said raspios which sure looks like raspian.

Re: latency test results for armhf vs arm64?

2022-07-16 Thread gene heskett
On 7/16/22 10:33, Arnd Bergmann wrote: On Sat, Jul 16, 2022 at 2:41 PM gene heskett wrote: On 7/16/22 08:10, Arnd Bergmann wrote: - 4.19 is four years old, and both the mainline kernel and the preempt-rt patches have changed a lot in the meantime. It's possible that a current

Re: latency test results for armhf vs arm64?

2022-07-16 Thread Lennart Sorensen
On Sat, Jul 16, 2022 at 08:41:07AM -0400, gene heskett wrote: > I wish you would admit that the raspios I am running IS armhf (kernel7l) > I've no clue where you got the impression it was v6. It is not. You said raspios which sure looks like raspian. Raspian/Raspberry Pi OS is armv6. If you are

Re: latency test results for armhf vs arm64?

2022-07-16 Thread Arnd Bergmann
On Sat, Jul 16, 2022 at 2:41 PM gene heskett wrote: > On 7/16/22 08:10, Arnd Bergmann wrote: > > > > - 4.19 is four years old, and both the mainline kernel and the > >preempt-rt patches have changed a lot in the meantime. It's > >possible that a current preempt-rt has regressed compared

Re: latency test results for armhf vs arm64?

2022-07-16 Thread gene heskett
On 7/16/22 08:10, Arnd Bergmann wrote: On Sat, Jul 16, 2022 at 5:05 AM gene heskett wrote: On 7/15/22 21:54, Paul Wise wrote: On Fri, 2022-07-15 at 13:40 -0400, gene heskett wrote: Because our latency-test results are better on armhf than on arm64, we use armhf for its performance. Are

Re: latency test results for armhf vs arm64?

2022-07-16 Thread gene heskett
On 7/16/22 05:59, Paul Wise wrote: On Fri, 2022-07-15 at 23:05 -0400, gene heskett wrote: The whole install of raspios is armhf. So I guess its yes. I seem to remember them switching to arm64 recently? They may have, I've had a total loss of history here with 2, 2T seagate drives dieing

Re: latency test results for armhf vs arm64?

2022-07-16 Thread Arnd Bergmann
On Sat, Jul 16, 2022 at 5:05 AM gene heskett wrote: > On 7/15/22 21:54, Paul Wise wrote: > > On Fri, 2022-07-15 at 13:40 -0400, gene heskett wrote: > > > >> Because our latency-test results are better on armhf than on arm64, > >> we use armhf for its performance. > > Are these results for armhf

Re: latency test results for armhf vs arm64?

2022-07-16 Thread Paul Wise
On Fri, 2022-07-15 at 23:05 -0400, gene heskett wrote: > The whole install of raspios is armhf. So I guess its yes. I seem to remember them switching to arm64 recently? > I have not tried to build an aarch64 from the src I have. I think it would be helpful if someone with an RPi4 could do