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And looking through the recent discussions I see in one thread...
Willy Tarreau wrote:
> It depends a lot on what people do with it in fact. For instance, it
> works better in memory-constrained systems, probably thanks to rmap.
> I have one 2.6 running reliably on my web server (hppa) where 2.4
> regularly oopsed because of low memory.
This reminds me, what the hell ever happened to ORMAP? That object
based rmap thingy I tried out in one of wli's patches made my system
boot like 3 times faster. There were other cool things going on that I
never got to try too, never saw that all out to fruition.
Status on some of the elements in the old 2.6-wli series from around
there would be nice. I'm curious as to what has gone in.
- --
All content of all messages exchanged herein are left in the
Public Domain, unless otherwise explicitly stated.
Creative brains are a valuable, limited resource. They shouldn't be
wasted on re-inventing the wheel when there are so many fascinating
new problems waiting out there.
-- Eric Steven Raymond
We will enslave their women, eat their children and rape their
cattle!
-- Evil alien overlord from Blasto
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John Richard Moser wrote:
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>
> And looking through the recent discussions I see in one thread...
>
> Willy Tarreau wrote:
>
>
>>It depends a lot on what people do with it in fact. For instance, it
>>works better in memory-constrained systems, probably thanks to rmap.
>>I have one 2.6 running reliably on my web server (hppa) where 2.4
>>regularly oopsed because of low memory.
>
>
>
> This reminds me, what the hell ever happened to ORMAP? That object
> based rmap thingy I tried out in one of wli's patches made my system
> boot like 3 times faster. There were other cool things going on that I
> never got to try too, never saw that all out to fruition.
>
> Status on some of the elements in the old 2.6-wli series from around
> there would be nice. I'm curious as to what has gone in.
>
2.6 has an object based rmap system working nicely for quite
a while now (though it was probably not exactly what you saw
in the -wli tree, but a derivative).
It would be surprising if that made your system boot 3 times
faster though (unless it was on the edge of a swap storm or
something)
--
SUSE Labs, Novell Inc.
Send instant messages to your online friends http://au.messenger.yahoo.com
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Nick Piggin wrote:
> John Richard Moser wrote:
>> -----BEGIN PGP SIGNED MESSAGE-----
>> Hash: SHA1
>>
>> And looking through the recent discussions I see in one thread...
>>
>> Willy Tarreau wrote:
>>
>>
>>> It depends a lot on what people do with it in fact. For instance, it
>>> works better in memory-constrained systems, probably thanks to rmap.
>>> I have one 2.6 running reliably on my web server (hppa) where 2.4
>>> regularly oopsed because of low memory.
>>
>>
>>
>> This reminds me, what the hell ever happened to ORMAP? That object
>> based rmap thingy I tried out in one of wli's patches made my system
>> boot like 3 times faster. There were other cool things going on that I
>> never got to try too, never saw that all out to fruition.
>>
>> Status on some of the elements in the old 2.6-wli series from around
>> there would be nice. I'm curious as to what has gone in.
>>
>
> 2.6 has an object based rmap system working nicely for quite
> a while now (though it was probably not exactly what you saw
> in the -wli tree, but a derivative).
>
> It would be surprising if that made your system boot 3 times
> faster though (unless it was on the edge of a swap storm or
> something)
Dramatization. It was probably around 30 seconds faster on a 2-3 minute
boot sequence (I had a lot in rc.d), but it was noticeable :P
I was wondering about that stuff. There used to be a few cute things
out there but I can't remember any of it now. Page clustering etc etc.
>
- --
All content of all messages exchanged herein are left in the
Public Domain, unless otherwise explicitly stated.
Creative brains are a valuable, limited resource. They shouldn't be
wasted on re-inventing the wheel when there are so many fascinating
new problems waiting out there.
-- Eric Steven Raymond
We will enslave their women, eat their children and rape their
cattle!
-- Evil alien overlord from Blasto
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John Richard Moser wrote:
>Nick Piggin wrote:
>
>>2.6 has an object based rmap system working nicely for quite
>>a while now (though it was probably not exactly what you saw
>>in the -wli tree, but a derivative).
>>
>>It would be surprising if that made your system boot 3 times
>>faster though (unless it was on the edge of a swap storm or
>>something)
>>
>
>Dramatization. It was probably around 30 seconds faster on a 2-3 minute
>boot sequence (I had a lot in rc.d), but it was noticeable :P
>
>I was wondering about that stuff. There used to be a few cute things
>out there but I can't remember any of it now. Page clustering etc etc.
>
>
Well I don't think any of that stuff was simply forgotten. Page
clustering for
i386, for example became less important because of objrmap, reductions
in size
of struct page, and the demise of insane highmem machines (due to x86-64).
Nick
--
Send instant messages to your online friends http://au.messenger.yahoo.com
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Nick Piggin wrote:
> John Richard Moser wrote:
>
>> Nick Piggin wrote:
>>
>>> 2.6 has an object based rmap system working nicely for quite
>>> a while now (though it was probably not exactly what you saw
>>> in the -wli tree, but a derivative).
>>>
>>> It would be surprising if that made your system boot 3 times
>>> faster though (unless it was on the edge of a swap storm or
>>> something)
>>>
>>
>> Dramatization. It was probably around 30 seconds faster on a 2-3 minute
>> boot sequence (I had a lot in rc.d), but it was noticeable :P
>>
>> I was wondering about that stuff. There used to be a few cute things
>> out there but I can't remember any of it now. Page clustering etc etc.
>>
>>
>
> Well I don't think any of that stuff was simply forgotten. Page
> clustering for
> i386, for example became less important because of objrmap, reductions
> in size
> of struct page, and the demise of insane highmem machines (due to x86-64).
>
Cool cool. What juicy things are out there these days that will
probably make future kernels faster and more memory-light? New
schedulers? Ingo's SLAB rewrite and priority inheritance?
> Nick
> --
>
> Send instant messages to your online friends http://au.messenger.yahoo.com
- --
All content of all messages exchanged herein are left in the
Public Domain, unless otherwise explicitly stated.
Creative brains are a valuable, limited resource. They shouldn't be
wasted on re-inventing the wheel when there are so many fascinating
new problems waiting out there.
-- Eric Steven Raymond
We will enslave their women, eat their children and rape their
cattle!
-- Evil alien overlord from Blasto
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