Re: System unusably slow after Debian upgrade.

2020-03-12 Thread G.W. Haywood
Hi there, On Mon, 09 Mar 2020, Thomas Schmitt wrote: G.W. Haywood wrote: > ... I am very happy to post the custom kernel .config as it stands, > if anyone would like to see it. I guess some readers would righteously complain if you send ~ 1 lines here. I did't mean that I was offering to

Re: System unusably slow after Debian upgrade.

2020-03-09 Thread Thomas Schmitt
Hi, G.W. Haywood wrote: > Unfortunately my tweaks to the stock kernel configuration resembled > wading through the jungle with a machete, and a diff between the stock > Buster kernel .config and my own .config amounts to 7,173 lines. Most > of these I am sure are irrelevant to this issue,

Re: System unusably slow after Debian upgrade.

2020-03-09 Thread G.W. Haywood
Hi Marco, Thanks very much for the trouble you have taken in your reply, I do appreciate it very much. On Sun, 8 Mar 2020, Marco Möller wrote: Upgrading your OS could result in the indexed search database to become rebuild, and this can take a very(!) long time and meanwhile painfully

Re: System unusably slow after Debian upgrade.

2020-03-08 Thread Marco Möller
Upgrading your OS could result in the indexed search database to become rebuild, and this can take a very(!) long time and meanwhile painfully rendering your system almost unresponsive until the database is fully recreated. I am speaking about days, on old hardware. I have had this, and

Re: System unusably slow after Debian upgrade.

2020-03-02 Thread Greg Wooledge
On Sat, Feb 29, 2020 at 11:50:09AM +, G.W. Haywood wrote: > Yesterday more out of desperation than anything I moved the Postgres > database (mainly the security camera stuff) from Postgres 9.4 to the > 11.0 instance which Buster installed and started. There were in fact > three instances of

Re: System unusably slow after Debian upgrade.

2020-02-29 Thread Nicholas Geovanis
On Sat, Feb 29, 2020, 7:08 AM Thomas Schmitt wrote: > Hi, > > G.W. Haywood wrote: > > It's just like the machine is > > suddenly being powered by an 8080 instead of an E3815... > > Lacking any ideas what might be the problem, i'd try Live ISOs of > Debian 9 and Debian 8 whether their systems

Re: System unusably slow after Debian upgrade.

2020-02-29 Thread Thomas Schmitt
Hi, G.W. Haywood wrote: > It's just like the machine is > suddenly being powered by an 8080 instead of an E3815... Lacking any ideas what might be the problem, i'd try Live ISOs of Debian 9 and Debian 8 whether their systems show the same problem. Older ISOs are at

Re: System unusably slow after Debian upgrade.

2020-02-29 Thread G.W. Haywood
Hi there, Thanks Dan and Greg (again), Stefan, Tixy, Thomas, and as before keep those ideas coming. I'm still baffled but we'll get there. I have to say that I'm well impressed by the quality of all the responses, and even where some of the suggestions have been to try things that I've already

Re: System unusably slow after Debian upgrade.

2020-02-28 Thread Dan Ritter
Tixy wrote: > On Fri, 2020-02-28 at 06:45 -0500, Dan Ritter wrote: > > Dan Ritter wrote: > > > Go to /etc/nsswitch.conf > > > > > > If these lines look like this > > > > > > passwd: compat systemd > > > group: compat systemd > > > shadow: compat systemd > > > > > >

Re: System unusably slow after Debian upgrade.

2020-02-28 Thread Tixy
On Fri, 2020-02-28 at 06:45 -0500, Dan Ritter wrote: > Dan Ritter wrote: > > Go to /etc/nsswitch.conf > > > > If these lines look like this > > > > passwd: compat systemd > > group: compat systemd > > shadow: compat systemd > > > > remove the systemd references. > > >

Re: System unusably slow after Debian upgrade.

2020-02-28 Thread G.W. Haywood
Hello again, On Fri, 28 Feb 2020, Dan Ritter wrote: A ridiculously decelerated gzip is evidence of one of the following: - CPU throttling - disk errors - something interfering with the disk reading or writing You've probably seen my reply to your first by now, it seems that disc access

Re: System unusably slow after Debian upgrade.

2020-02-28 Thread G.W. Haywood
Hi there, Thanks very much for the reply. On Fri, 28 Feb 2020 Andrei POPESCU wrote: What Desktop Environment? I believe GNOME is using Wayland by default and needs hardware acceleration. Try something like LXDE instead. Sorry, I did mean to mention that but I forgot. It's XFCE, and the

Re: System unusably slow after Debian upgrade.

2020-02-28 Thread Stefan Monnier
> It would also be good to look after the basics, like running "uptime" > to check the load average, "top" to see if there are processes running > amok, "df" to see if a file system is unexpectedly full, and so on. Yes, I'd recommend running `atop` on both machines during your test to try and see

Re: System unusably slow after Debian upgrade.

2020-02-28 Thread Greg Wooledge
On Fri, Feb 28, 2020 at 02:34:19PM +, G.W. Haywood wrote: > -- > On Thu, 27 Feb 2020, Dan Ritter wrote: > > > Go to /etc/nsswitch.conf > > > > If these lines look like this > > > > passwd: compat systemd > > group:

Re: System unusably slow after Debian upgrade.

2020-02-28 Thread G.W. Haywood
Hi there, Thanks Greg, Dan and Rico for the replies. Keep them coming, I'm afraid we're not out of the woods yet. On Thu, Feb 27, 2020 at 03:11:10PM +, G.W. Haywood wrote: ... Jessie to Stretch to Buster ... Immediately, the users started to complain about performance. Not just a small

Re: System unusably slow after Debian upgrade.

2020-02-28 Thread Dan Ritter
Dan Ritter wrote: > Go to /etc/nsswitch.conf > > If these lines look like this > > passwd: compat systemd > group: compat systemd > shadow: compat systemd > > remove the systemd references. > > If performance improves immensely immediately after the edit, > that was

Re: System unusably slow after Debian upgrade.

2020-02-28 Thread Andrei POPESCU
On Jo, 27 feb 20, 15:11:10, G.W. Haywood wrote: > Hi there, > > Long time Linux user here, very familiar with tools for system > administration but somewhat stumped by the behaviour of a system > installed by me about six years ago at a local farm. It's an old > Intel 'NUC' like this one: > >

Re: System unusably slow after Debian upgrade.

2020-02-27 Thread Reco
Hi. On Thu, Feb 27, 2020 at 03:11:10PM +, G.W. Haywood wrote: > As the box was still running Jessie I had to do the move in two bites. > First move from Jessie to Stretch, then from Stretch to Buster. The > entire process was a bit long-winded and spread over a couple of days, > but

Re: System unusably slow after Debian upgrade.

2020-02-27 Thread Dan Ritter
G.W. Haywood wrote: > > As the box was still running Jessie I had to do the move in two bites. > First move from Jessie to Stretch, then from Stretch to Buster. The > entire process was a bit long-winded and spread over a couple of days, > but seemed to go smoothly enough. Immediately, the

Re: System unusably slow after Debian upgrade.

2020-02-27 Thread Greg Wooledge
On Thu, Feb 27, 2020 at 03:11:10PM +, G.W. Haywood wrote: > As the box was still running Jessie I had to do the move in two bites. > First move from Jessie to Stretch, then from Stretch to Buster. OK. > but seemed to go smoothly enough. Immediately, the users started to > complain about