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Re: Performace issue with insert
Am 27.01.2016 um 20:08 schrieb Roberto Spadim:
what mariadb and mysql version?
he already answered that
the mariadb version we tried were 5.1.62 and 10.1.10 compared with mysql
2016-01-27 17:05 GMT-02:00 Tom Worster <fsb@xxxxxxxxxx
If a table has any indexes then inset time increases with the number of
records in the table. Even with only one index, the difference between
inserting when the table is nearly empty and when it has many
records can be dramatic.
If you have some understanding of how conventional indexes work then
effect can become fairly easy to imagine.
On 1/27/16, 5:27 AM, "Maria-discuss on behalf of walter harms"
<mailto:thefsb.org@xxxxxxxxxxxxxxxxxxx> on behalf of
wharms@xxxxxx <mailto:wharms@xxxxxx>> wrote:
>i have a strange problem with inserts.
>The tables is large (time series data) and has a
>lot of partitions, engine is IMMODB.
>We have notice that the write performance decreases with
>time, start of the month good, end of the month bad.
>The same behavier is the lasted version of mariadb.
>But when i replace mariadb with mysql the problems vanishes
>(so its not a hardware issue). I suspect that it is a caching
>problem but a comparison of the configs did not give a hint.
>Anyone an idea what may cause the effect ?
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