Re: big, fast, etc, was is Vax addressing sane today

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Sujet : Re: big, fast, etc, was is Vax addressing sane today
De : already5chosen (at) *nospam* yahoo.com (Michael S)
Groupes : comp.arch
Date : 13. Sep 2024, 13:55:39
Autres entêtes
Organisation : A noiseless patient Spider
Message-ID : <20240913145539.000029b5@yahoo.com>
References : 1 2 3 4 5 6 7
User-Agent : Claws Mail 4.1.1 (GTK 3.24.34; x86_64-w64-mingw32)
On Fri, 13 Sep 2024 11:20:06 -0000 (UTC)
Thomas Koenig <tkoenig@netcologne.de> wrote:

Terje Mathisen <terje.mathisen@tmsw.no> schrieb:
 
10-15 years ago I talked to another speaker at a conference, he
told me that he was working on high-end open source LDAP software
using _very_ large memory DBs: Their system allowed one US cell
phone company to keep every SIM card (~100M) on a single system,
while a similar-size competitor had been forced to fall back on
17-way sharding (presumably using a hash of the SIM id). 
 
Keeping databases in memory is definitely a thing now... see SAP HANA.
 
Any architectural implications for this?
 
Browsing through the SAP pages, it seems they used Intel's Optane
persistent memory, but that is no longer manufactured (?).  But
having fast, persistent storage is definitely an advantage for
databases.
 
Large memory: Of course.
 
On the ISA level... these databases run on x86, so that seems to
be good enough.
 
Anything else?
 

Another thing that SAP HANA seems to use more intensely than anybody
else is Intel TSX. TSX (at least RTM part, I am not sure about HLE
part) still present in the latest Xeon generation, but is strongly
de-emphasized.




Date Sujet#  Auteur
5 Sep 24 * is Vax adressing sane today134Brett
5 Sep 24 +* Re: is Vax adressing sane today122John Dallman
6 Sep 24 i+- Re: is Vax adressing sane today1Lawrence D'Oliveiro
6 Sep 24 i`* Re: is Vax adressing sane today120Anton Ertl
6 Sep 24 i +- Re: is Vax adressing sane today1Lawrence D'Oliveiro
6 Sep 24 i +* Re: is Vax adressing sane today5MitchAlsup1
7 Sep 24 i i`* Re: is Vax adressing sane today4Anton Ertl
7 Sep 24 i i `* Re: is Vax adressing sane today3Anton Ertl
7 Sep 24 i i  `* Re: is Vax addressing sane today2John Dallman
7 Sep 24 i i   `- Re: is Vax addressing sane today1Anton Ertl
7 Sep 24 i +* Re: is Vax adressing sane today111John Levine
8 Sep 24 i i`* Re: is Vax adressing sane today110Anton Ertl
8 Sep 24 i i +* Re: is Vax adressing sane today102MitchAlsup1
8 Sep 24 i i i`* Re: is Vax addressing sane today101Lawrence D'Oliveiro
9 Sep 24 i i i +* Re: is Vax addressing sane today31MitchAlsup1
9 Sep 24 i i i i`* Re: is Vax addressing sane today30Brett
9 Sep 24 i i i i +* Re: is Vax addressing sane today3MitchAlsup1
10 Sep 24 i i i i i`* Re: is Vax addressing sane today2Niklas Holsti
11 Sep 24 i i i i i `- Re: is Vax addressing sane today1Lawrence D'Oliveiro
10 Sep 24 i i i i `* Re: is Vax addressing sane today26Anton Ertl
10 Sep 24 i i i i  +* Re: is Vax addressing sane today4Michael S
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11 Sep 24 i i i i  i `- Re: is Vax addressing sane today1Michael S
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11 Sep 24 i i i i  i`* Re: is Vax addressing sane today6Michael S
11 Sep 24 i i i i  i `* Re: is Vax addressing sane today5David Brown
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11 Sep 24 i i i i  +* Re: is Vax addressing sane today5John Levine
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11 Sep 24 i i i i  i i`- Re: is Vax addressing sane today1jseigh
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21 Sep03:51 i i i i    `* Re: is Vax addressing sane today3MitchAlsup1
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10 Sep 24 i i i   `* Re: is Vax addressing sane today63Anton Ertl
10 Sep 24 i i i    `* Re: is Vax addressing sane today62Michael S
10 Sep 24 i i i     `* Re: is Vax addressing sane today61Anton Ertl
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11 Sep 24 i i i        ii +- Re: what's a mainframe, was is Vax addressing sane today1Thomas Koenig
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13 Sep 24 i i i        i  +- Re: big, fast, etc, was is Vax addressing sane today1Lawrence D'Oliveiro
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13 Sep 24 i i i        i  i`* Re: big, fast, etc, was is Vax addressing sane today5Thomas Koenig
13 Sep 24 i i i        i  i +* Re: big, fast, etc, was is Vax addressing sane today3Michael S
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14 Sep 24 i i i        i  i i `- Re: big, fast, etc, was is Vax addressing sane today1MitchAlsup1
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11 Sep 24 i i i        `* Re: is Vax addressing sane today2MitchAlsup1
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6 Sep 24 `* Re: is Vax adressing sane today8Anton Ertl

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