Re: RAID-1 and disk I/O

2021-07-17 Thread David
On Sun, 18 Jul 2021 at 07:03, David Christensen wrote: > On 7/17/21 5:34 AM, Urs Thuermann wrote: > > On my server running Debian stretch, > > the storage setup is as follows: > > Two identical SATA disks with 1 partition on each drive spanning the > > whole drive, i.e. /dev/sda1 and /dev/sdb1.

Re: RAID-1 and disk I/O

2021-07-17 Thread David Christensen
On 7/17/21 5:34 AM, Urs Thuermann wrote: On my server running Debian stretch, You should consider upgrading to Debian 10 -- more people run that and you will get better support. I migrated to FreeBSD. the storage setup is as follows: Two identical SATA disks with 1 partition on each dri

Re: VirtualBox Problem

2021-07-17 Thread IL Ka
> > [1], comment 1, first sentence. > VirtualBox limits CPU by available cores, not threads. This is not > configurable, and is unchangeable, unless you patch VirtualBox. > It seems that nobody bothered to write such patch. > > On Win10 Hyper-V could also be used, and it doesn't have such problems

Re: VirtualBox Problem

2021-07-17 Thread mick crane
On 2021-07-17 20:00, Stephen P. Molnar wrote: First off, let me say that I am not trying to start a war or nasty exchange4of insults. I am forced by circumstance to run a Linux program on my Windows 10 Laptop. In order to accomplish his I have installed Buster in a VirtualBox v-6.1. Although the

Re: VirtualBox Problem

2021-07-17 Thread john doe
On 7/17/2021 9:00 PM, Stephen P. Molnar wrote: First off, let me say that I am not trying to start a war or nasty exchange4of insults. I am forced by circumstance to run a Linux program on my Windows 10 Laptop. In order to accomplish his I have installed Buster in a VirtualBox v-6.1. Although th

Re: VirtualBox Problem

2021-07-17 Thread Reco
Hi. On Sat, Jul 17, 2021 at 03:00:48PM -0400, Stephen P. Molnar wrote: > I am forced by circumstance to run a Linux program on my Windows 10 > Laptop. In order to accomplish his I have installed Buster in a > VirtualBox v-6.1. Although the AMD Rizen 5 CPU has eight threads, of > which the

Re: VirtualBox Problem

2021-07-17 Thread Georgi Naplatanov
On 7/17/21 10:00 PM, Stephen P. Molnar wrote: > First off, let me say that I am not trying to start a war or nasty > exchange4of insults. > > I am forced by circumstance to run a Linux program on my Windows 10 > Laptop. In order to accomplish his I have installed Buster in a > VirtualBox v-6.1. Al

VirtualBox Problem

2021-07-17 Thread Stephen P. Molnar
First off, let me say that I am not trying to start a war or nasty exchange4of insults. I am forced by circumstance to run a Linux program on my Windows 10 Laptop. In order to accomplish his I have installed Buster in a VirtualBox v-6.1. Although the AMD Rizen 5 CPU has eight threads, of whic

Re: Buster+Gnome on Pi4

2021-07-17 Thread pcr
Thanks Tixy,  Ill try that.  In summary, I found debian buster with gnome on rpi4 to be good enough for everyday browsing, online banking and shopping, etc.  Its not for gamers, and there are issues with some things. For example I installed wxMaxima as a replacement for REDUCE and while my sc

Re: RAID-1 and disk I/O

2021-07-17 Thread Andy Smith
Hi Urs, Your plan to change the SATA cable seems wise - your various error rates are higher than I have normally seen. Also worth bearing in mind that Linux MD RAID 1 will satisfy all read IO for a given operation from one device in the mirror. If you have processes that do occasional big reads t

Re: RAID-1 and disk I/O

2021-07-17 Thread Bob Weber
On 7/17/21 08:34, Urs Thuermann wrote: Here, the noticable lines are IMHO Raw_Read_Error_Rate (208245592 vs. 117642848) Command_Timeout (8 14 17 vs. 0 0 0) UDMA_CRC_Error_Count(11058 vs. 29) Do these numbers indicate a serious problem with my /dev/sda drive? And i

Re: RAID-1 and disk I/O

2021-07-17 Thread Nicholas Geovanis
I'm going to echo your final thought there: Replace the SATA cables with 2 NEW ones of the same model. Then see how it goes, meaning rerun the tests you just ran. If possible, try to make the geometries of the cables as similar as you can: roughly same (short?) lengths, roughly as straight and cong

RAID-1 and disk I/O

2021-07-17 Thread Urs Thuermann
On my server running Debian stretch, the storage setup is as follows: Two identical SATA disks with 1 partition on each drive spanning the whole drive, i.e. /dev/sda1 and /dev/sdb1. Then, /dev/sda1 and /dev/sdb1 form a RAID-1 /dev/md0 with LVM on top of it. The disk I/O shows very different usage

Re: Buster+Gnome on Pi4

2021-07-17 Thread Tixy
On Fri, 2021-07-16 at 16:34 -0400, Stefan Monnier wrote: > pcr [2021-07-16 20:28:01] wrote: > > Yesterday I had good luck with LibreCAD, did a nice drawing without any > > trouble; today, however, I failed to install REDUCE-algebra, because there > > is no version for ARM.  I tried to get the sourc

Aw: Re: GRUB command-line with timeout

2021-07-17 Thread Steve Keller
David Wright writes: > So on the odd occasion, you turn on the machine and, at a mininum, are > about to type in some commands to boot the machine manually. And then > you might even log in. Having to type /one/ keystroke at the start is > just too much. > > Is that what you're really saying? No

Re: [Misstänkt skräppost] Re: How do I mount the USB stick containing the installer in Rescue Mode?

2021-07-17 Thread xtra-...@telia.com
--- Begin Message --- Hi. On Thu, Jul 15, 2021 at 11:30:10AM -0400, Stefan Monnier wrote: > Greg Wooledge [2021-07-15 07:00:40] wrote: > > On Thu, Jul 15, 2021 at 12:55:11PM +0300, Reco wrote: > >> "nofail" is really needed for removable devices, because whoever > >> designed systemd made