Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-02-01 Thread Pavel Machek
On Thu 2013-01-31 23:38:27, Phil Turmel wrote: > On 01/31/2013 10:13 PM, paul.sz...@sydney.edu.au wrote: > > [trim /] Does not that prove that PAE is broken? > > Please, Paul, take *yes* for an answer. It is broken. You've received > multiple dissertations on why it is going to stay that way.

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-02-01 Thread Pavel Machek
On Thu 2013-01-31 23:38:27, Phil Turmel wrote: On 01/31/2013 10:13 PM, paul.sz...@sydney.edu.au wrote: [trim /] Does not that prove that PAE is broken? Please, Paul, take *yes* for an answer. It is broken. You've received multiple dissertations on why it is going to stay that way. Unless

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-01-31 Thread Phil Turmel
On 01/31/2013 10:13 PM, paul.sz...@sydney.edu.au wrote: > [trim /] Does not that prove that PAE is broken? Please, Paul, take *yes* for an answer. It is broken. You've received multiple dissertations on why it is going to stay that way. Unless you fix it yourself, and everyone seems to be

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-01-31 Thread paul . szabo
Dear Ben, PAE is broken for any amount of RAM. >>> No it isn't. >> Could I please ask you to expand on that? > > I already did, a few messages back. OK, thanks. Noting however that fewer than those back, I said: ... PAE with any RAM fails the "sleep test": n=0; while [ $n -lt 33000 ];

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-01-31 Thread Ben Hutchings
On Fri, 2013-02-01 at 13:12 +1100, paul.sz...@sydney.edu.au wrote: > Dear Ben, > > >> PAE is broken for any amount of RAM. > > > > No it isn't. > > Could I please ask you to expand on that? I already did, a few messages back. Ben. -- Ben Hutchings Everything should be made as simple as

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-01-31 Thread paul . szabo
Dear Ben, >> PAE is broken for any amount of RAM. > > No it isn't. Could I please ask you to expand on that? Thanks, Paul Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/ School of Mathematics and Statistics University of SydneyAustralia -- To unsubscribe from

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-01-31 Thread Ben Hutchings
On Fri, 2013-02-01 at 10:06 +1100, paul.sz...@sydney.edu.au wrote: > Dear Ben, > > > Based on your experience I might propose to change the automatic kernel > > selection for i386 so that we use 'amd64' on a system with >16GB RAM and > > a capable processor. > > Don't you mean change to amd64

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-01-31 Thread paul . szabo
Dear Ben, > Based on your experience I might propose to change the automatic kernel > selection for i386 so that we use 'amd64' on a system with >16GB RAM and > a capable processor. Don't you mean change to amd64 for >4GB (or any RAM), never using PAE? PAE is broken for any amount of RAM. More

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-01-31 Thread Ben Hutchings
On Thu, 2013-01-31 at 20:07 +1100, paul.sz...@sydney.edu.au wrote: > Dear Ben, > > Thanks for the repeated explanations. > > > PAE was a stop-gap ... > > ... [PAE] completely untenable. > > Is this a good time to withdraw PAE, to tell the world that it does not > work? Maybe you should have had

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-01-31 Thread paul . szabo
Dear Ben, Thanks for the repeated explanations. > PAE was a stop-gap ... > ... [PAE] completely untenable. Is this a good time to withdraw PAE, to tell the world that it does not work? Maybe you should have had such comments in the code. Seems that amd64 now works "somewhat": on Debian the

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-01-31 Thread paul . szabo
Dear Ben, Thanks for the repeated explanations. PAE was a stop-gap ... ... [PAE] completely untenable. Is this a good time to withdraw PAE, to tell the world that it does not work? Maybe you should have had such comments in the code. Seems that amd64 now works somewhat: on Debian the

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-01-31 Thread Ben Hutchings
On Thu, 2013-01-31 at 20:07 +1100, paul.sz...@sydney.edu.au wrote: Dear Ben, Thanks for the repeated explanations. PAE was a stop-gap ... ... [PAE] completely untenable. Is this a good time to withdraw PAE, to tell the world that it does not work? Maybe you should have had such

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-01-31 Thread paul . szabo
Dear Ben, Based on your experience I might propose to change the automatic kernel selection for i386 so that we use 'amd64' on a system with 16GB RAM and a capable processor. Don't you mean change to amd64 for 4GB (or any RAM), never using PAE? PAE is broken for any amount of RAM. More

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-01-31 Thread Ben Hutchings
On Fri, 2013-02-01 at 10:06 +1100, paul.sz...@sydney.edu.au wrote: Dear Ben, Based on your experience I might propose to change the automatic kernel selection for i386 so that we use 'amd64' on a system with 16GB RAM and a capable processor. Don't you mean change to amd64 for 4GB (or

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-01-31 Thread paul . szabo
Dear Ben, PAE is broken for any amount of RAM. No it isn't. Could I please ask you to expand on that? Thanks, Paul Paul Szabo p...@maths.usyd.edu.au http://www.maths.usyd.edu.au/u/psz/ School of Mathematics and Statistics University of SydneyAustralia -- To unsubscribe from this

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-01-31 Thread Ben Hutchings
On Fri, 2013-02-01 at 13:12 +1100, paul.sz...@sydney.edu.au wrote: Dear Ben, PAE is broken for any amount of RAM. No it isn't. Could I please ask you to expand on that? I already did, a few messages back. Ben. -- Ben Hutchings Everything should be made as simple as possible, but

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-01-31 Thread paul . szabo
Dear Ben, PAE is broken for any amount of RAM. No it isn't. Could I please ask you to expand on that? I already did, a few messages back. OK, thanks. Noting however that fewer than those back, I said: ... PAE with any RAM fails the sleep test: n=0; while [ $n -lt 33000 ]; do sleep 600

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-01-31 Thread Phil Turmel
On 01/31/2013 10:13 PM, paul.sz...@sydney.edu.au wrote: [trim /] Does not that prove that PAE is broken? Please, Paul, take *yes* for an answer. It is broken. You've received multiple dissertations on why it is going to stay that way. Unless you fix it yourself, and everyone seems to be

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-01-30 Thread Ben Hutchings
On Thu, 2013-01-31 at 06:40 +1100, paul.sz...@sydney.edu.au wrote: > Dear Pavel and Dave, > > > The assertion was that 4GB with no PAE passed a forkbomb test (ooming) > > while 4GB of RAM with PAE hung, thus _PAE_ is broken. > > Yes, PAE is broken. Still, maybe the above needs slight correction:

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-01-30 Thread Ben Hutchings
On Thu, 2013-01-31 at 06:40 +1100, paul.sz...@sydney.edu.au wrote: Dear Pavel and Dave, The assertion was that 4GB with no PAE passed a forkbomb test (ooming) while 4GB of RAM with PAE hung, thus _PAE_ is broken. Yes, PAE is broken. Still, maybe the above needs slight correction:

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-01-14 Thread Ben Hutchings
On Tue, 2013-01-15 at 07:36 +1100, paul.sz...@sydney.edu.au wrote: > Dear Dave, > > >> Seems that any i386 PAE machine will go OOM just by running a few > >> processes. To reproduce: > >> sh -c 'n=0; while [ $n -lt 1 ]; do sleep 600 & ((n=n+1)); done' > >> ... > > I think what you're seeing

Re: Bug#695182: [RFC] Reproducible OOM with just a few sleeps

2013-01-14 Thread Ben Hutchings
On Tue, 2013-01-15 at 07:36 +1100, paul.sz...@sydney.edu.au wrote: Dear Dave, Seems that any i386 PAE machine will go OOM just by running a few processes. To reproduce: sh -c 'n=0; while [ $n -lt 1 ]; do sleep 600 ((n=n+1)); done' ... I think what you're seeing here is that, as