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Date: Sun, 1 Nov 2020 11:26:20 +0300
From: Cyrill Gorcunov <gorcunov@gmail.com>
Message-ID: <20201101082620.GJ198833@grain>
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Subject: Re: [Tarantool-patches] [PATCH v8 3/4] box/cbox: implement cbox Lua
	module
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To: Vladislav Shpilevoy <v.shpilevoy@tarantool.org>
Cc: tml <tarantool-patches@dev.tarantool.org>

On Sun, Nov 01, 2020 at 12:59:46AM +0300, Cyrill Gorcunov wrote:
...
> 
> And I think we should consider moving to xxhash instead
> 
> git@github.com:Cyan4973/xxHash.git
> 
> which shows better result so far. Still as any noncrypto
> hashes it has collissions.

FWIW, I changed Murmur3/32 to xxhash/32 and here are results
---
murmur3
[cyrill@grain cbox] ./hvsrb --mh
mh create diff :               459890 ns
mh lookup diff :               194201 ns

xxhash
[cyrill@grain cbox] ./hvsrb --mh
mh create diff :               421618 ns
mh lookup diff :               123385 ns

lookup works almost twice faster on random data,
creation time is comparable.