Re: [Boost-users] Backend of multi_index container

Subject: Re: [Boost-users] Backend of multi_index container
From: Anaswara Nair (anaswara.nn_at_[hidden])
Date: 2016-06-26 08:02:39

I compiled in Release mode. And yes.. I have to insert once and should be
able  to use its index to retrieve the data.

On Sun, Jun 26, 2016 at 5:12 PM, Ernest Zaslavsky <
ernest.zaslavsky_at_[hidden]> wrote:

> Hm… 650 ms is way too much for 100k container. AFAIR I was inserting 500k
> in one second, 5M in 3 seconds…
>
> Are you sure you are NOT running in debug configuration.
>
>
>
> Could you elaborate what is your use case? Do you have to insert once and
> then just use its index?
>
>
>
> *From:* Boost-users [mailto:boost-users-bounces_at_[hidden]] *On
> Behalf Of *Anaswara Nair
> *Sent:* Friday, June 24, 2016 3:53 PM
> *To:* boost-users_at_[hidden]
> *Subject:* Re: [Boost-users] Backend of multi_index container
>
>
>
> I had a file containing about 0.1 million records, each record
> containing seven fields(two strings
> and five 64 bit integers). I indexed(ordered_unique) one of
> the integer fields and tried inserting the records to a multiindex container
> and it took only about 650 milliseconds. Inserting the same to a SQLite DB
> took almost 1 second. So, will inserting a really really huge amount of
> records will degrade the performance?
>
>
>
> On Thu, Jun 23, 2016 at 10:32 AM, Ernest Zaslavsky <
> ernest.zaslavsky_at_[hidden]> wrote:
>
> IIRC it uses red-black tree
>
> I had horrific experience with insert times, it just took too much time.
> Actually I had exactly your case, insert once and then just run on multiple
> indexes. Sounds like, if you don’t mind the load time, go for it.
>
>
>
> *From:* Boost-users [mailto:boost-users-bounces_at_[hidden]] *On
> Behalf Of *Anaswara Nair
> *Sent:* Wednesday, June 22, 2016 4:13 PM
> *To:* boost-users_at_[hidden]
> *Subject:* [Boost-users] Backend of multi_index container
>
>
>
>
> Hi, I was going through the documentation of boost::multi_index container.
> I would like to know what is in its back end. Something like
> B-Tree,B+tree,etc.? Actually I want to create a database(in the sense it
> contains millions of records), but need not be reusable at a later period
> of time. i.e, I am looking only for run-time persistent data. Once data is
> inserted to this, it will not be modified. And there will be a unique id
> for each record. I would also like to know whether multi_index is the best
> suited one for the implementation of my so called database.. Thankyou
>
>
>
>
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>
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-- 
WITH REGARDS,
             ANASWARA