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Guest
Posted: Mon Mar 19, 2007 1:04 pm Reply with quote
Guest
Thanks, Ulf. I guess that dirty_write was the cheapest operation at
the time when the Efficiency Guide was written. Unfortunately, we have
a hard time keeping all of the system documentation up-to-date.

I changed the text to "Even the Mnesia dirty_write_operations...".

Regards,
Gunilla, Erlang/OTP team

Ulf Wiger wrote:
> In the Efficiency Guide,
>
> http://www.erlang.org/doc/doc-5.5.3/doc/efficiency_guide/tablesDatabases.html#4.1.4
>
> it says:
>
> "Even the cheapest Mnesia operations, dirty_write operations,"
>
> Dirty_write operations are not the cheapest Mnesia operations.
>
>
> For example,
>
> mnesia:activity(ets, fun() -> mnesia:write(Obj) end)
>
> is significantly cheaper than
>
> mnesia:dirty_write(Obj)
>
> (and also semantically different, of course...)
>
>
> BR,
> Ulf W

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