Thanks Ryan and Ted. I also think if they were using tcmalloc, it would have
given them a further advantage but as you said, not much is known about the
test source code.
On Wed, Dec 15, 2010 at 2:22 PM, Ryan Rawson wrote:

So if that is the case, I'm not sure how that is a fair test. One
system reads from RAM, the other from disk. The results as expected.

Why not test one system with SSDs and the other without?

It's really hard to get apples/oranges comparison. Even if you are
doing the same workloads on 2 diverse systems, you are not testing the
code quality, you are testing overall systems and other issues.

As G1 GC improves, I expect our ability to use larger and larger heaps
would blunt the advantage of a C++ program using malloc.

On Wed, Dec 15, 2010 at 11:15 AM, Ted Dunning wrote:
From the small comments I have heard, the RAM versus disk difference is
mostly what I have heard they were testing.
On Wed, Dec 15, 2010 at 11:11 AM, Ryan Rawson wrote:

We dont have the test source code, so it isnt very objective. However
I believe there are 2 things which help them:
- They are able to harness larger amounts of RAM, so they are really
just testing that vs HBase

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groupdev @
categorieshbase, hadoop
postedDec 15, '10 at 7:00p
activeDec 16, '10 at 4:53a



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