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From: Bruno George Moraes <brunogm0@gmail.com>
To: Bufferbloat lists bloat <bloat@lists.bufferbloat.net>
Subject: [Bloat]  known buffer sizes on switches
Date: Wed, 28 Nov 2018 14:32:10 -0200	[thread overview]
Message-ID: <CAJpr3FMOr+zC1_oEnDU0s+67b2SLPSELo4esLQY-UCJtOGtKNw@mail.gmail.com> (raw)

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>
> Nice resource, thanks.
>
> If someone wonders why things look the way they do, so it's all about
> on-die and off-die memory. Either you use off-die or on-die memory, often
> SRAM which requires 6 gates per bit. So spending half a billion gates
> gives you ~10MB buffer on-die. If you're doing off-die memory (DRAM or
> similar) then you'll get the gigabytes of memory seen in some equipment.
> There basically is nothing in between. As soon as you go off-die you might
> as well put at least 2-6 GB in there.
>
>
There are some reasearch on new memory devices with unexpected results...
https://ieeexplore.ieee.org/document/8533260

The HMC memory allows improvements in execution time and consumed energy.
> In some situations, this memory type permits removing the L2 cache from the
> memory hierarchy.
>

HMC parts start at 2GB

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             reply	other threads:[~2018-11-28 16:32 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-28 16:32 Bruno George Moraes [this message]
2018-11-28 16:55 ` Dave Taht
2018-11-28 18:25   ` Dave Collier-Brown
2018-11-28 18:26   ` David Collier-Brown
2018-11-28 19:02     ` Dave Taht
2018-11-28 20:34       ` David Collier-Brown
2018-11-29  2:33   ` Dave Taht
  -- strict thread matches above, loose matches on Subject: below --
2018-11-24 23:29 Dave Taht
2018-11-25  6:44 ` Mikael Abrahamsson

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