| From: | Rob Sargent <robjsargent(at)gmail(dot)com> |
|---|---|
| To: | Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at> |
| Cc: | "pgsql-general(at)postgresql(dot)org" <pgsql-general(at)postgresql(dot)org> |
| Subject: | Re: COPY threads |
| Date: | 2018-10-10 17:14:47 |
| Message-ID: | 638D8006-CE07-4F23-B1AA-710A9A9A07A4@gmail.com |
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| Lists: | pgsql-general |
> On Oct 10, 2018, at 10:50 AM, Laurenz Albe <laurenz(dot)albe(at)cybertec(dot)at> wrote:
>
> Rob Sargent wrote:
>> Can anyone here tell me whether or not the CopyManager facility in JDBC
>> via org.postgresql:postgresql:42.1.4 is internally multithreaded?
>> Running on CentOS 7 (all participants), java8, postgres 10.5
>
> It isn't, and there would not be much reason for it to be, as COPY
> in PostgreSQL cannot be parallelized.
Thank you for that confirmation. I had all cores firing on my copyManager box and it turned out it was really just looking really hard for more byte to free up. I was getting a lot more out of the database than I could chew. OOM ensued.
Cheers,
rjs
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