[linux] Veritasium video on the frequency of bit flips

2021-09-02 Thread Ian! D. Allen
Veritasium video on the frequency of bit flips: https://www.youtube.com/watch?v=AaZ_RSt0KP8 "The Universe is Hostile to Computers" At 17m53s: "On one five-day [Space Shuttle Mission] there were 161 separate bit flips." Okay, maybe we *do* need ECC RAM. -- | Ian! D. Allen, BA, MMath

Re: [linux] Veritasium video on the frequency of bit flips

2021-09-02 Thread Christopher Harvey
On Thu, Sep 2, 2021, at 4:00 PM, Dianne Skoll wrote: > On Thu, 2 Sep 2021 15:39:37 -0400 > "Ian! D. Allen" wrote: > > > At 17m53s: "On one five-day [Space Shuttle Mission] there were 161 > > separate bit flips." > > > Okay, maybe we *do* need ECC RAM. > > Certainly on the space shuttle. Probab

Re: [linux] Veritasium video on the frequency of bit flips

2021-09-02 Thread Brett Delmage
On Thu, 2 Sep 2021, Ian! D. Allen wrote: At 17m53s: "On one five-day [Space Shuttle Mission] there were 161 separate bit flips." Okay, maybe we *do* need ECC RAM. Does anyone on this list run ZFS without ECC? I always understood it was a risky filesystem choice without ECC. I really do not

Re: [linux] Veritasium video on the frequency of bit flips

2021-09-02 Thread Alan McKay
Even here on Earth you should use ZFS or equivalent for data you care about -- "You should sit in nature for 20 minutes a day Unless you are busy - then you should sit for an hour" - Zen Proverb

RE: [linux] Veritasium video on the frequency of bit flips

2021-09-02 Thread gmussar
-Original Message- From: Dianne Skoll >I wonder about flash memory. As flash memory cells shrink, could a cosmic ray flip the charge on the floating gate? And if so, does flash have the equivalent of ECC? Oh, it gets worse than that. The charge in a cell can leak if it is not refreshe

Re: [linux] Veritasium video on the frequency of bit flips

2021-09-02 Thread Spencer Cheng
> On Sep 3, 2021, at 05:09, Brett Delmage > wrote: > > Does anyone on this list run ZFS without ECC? > I run ZFS in my home NAS. > I always understood it was a risky filesystem choice without ECC. I really do > not want to have extensive filesystem corruption because of a bit flip, so >

Re: [linux] September 2021 Meeting - 2021-09-02 @ 19:00

2021-09-02 Thread Jean-Francois Messier
I connected on the link, and it says that the next meeting is on 2021-06-03. This will be tomorrow, Friday. What about tonight ? Or am I too early ? On 2021-08-29 9:41 p.m., Scott Murphy wrote: When: Thursday, September 2, 2021 Time: 19:00 Where: jitsi video conference For those new to Linux,

Re: [linux] September 2021 Meeting - 2021-09-02 @ 19:00

2021-09-02 Thread Brett Delmage
On Thu, 2 Sep 2021, Jean-Francois Messier wrote: I connected on the link, and it says that the next meeting is on 2021-06-03. This will be tomorrow, Friday. What about tonight ? Or am I too early ? Just too early. Standby! Brett To unsubscribe send a blank message to linux+unsubscr...@linux-

Re: [linux] September 2021 Meeting - 2021-09-02 @ 19:00

2021-09-02 Thread Scott Murphy
That is because I have a placeholder web page that I forgot to update. When the new server goes live, it stops redirecting and reverts later that night.One more candidate for automation. > On Sep 2, 2021, at 18:01, Jean-Francois Messier wrote: > > I connected on the link, and it says that the