Re: IO scheduler recommendation

Phoronix website has some performance testing.

for example: (2018 Dec) "Linux 4.20 I/O Scheduler Benchmarks On NVMe SSD
Storage"
https://www.phoronix.com/scan.php?page=article&item=linux-420-io&num=3
"BFQ also picked up wins on the Samsung 970 EVO SSD when running the
PostgreSQL database server."

(2017)"Linux 4.12 I/O Scheduler Benchmarks: BFQ, Kyber, Etc"
https://www.phoronix.com/scan.php?page=article&item=linux-412-io&num=3
"The default CFQ I/O scheduler on this SATA 3.0 SSD system remained the
fastest for this PostgreSQL benchmark."

Imre

AB_ba# <bharti(dot)anup(at)gmail(dot)com> ezt írta (időpont: 2019. jan. 21., H, 12:05):

> Hello ,
>
> I searched the complete PostgreSQL Documentation but didn't get anything
> with respect to IO scheduler recommendation.
> What is being recommended by PostgreSQL ?
> Which is the best IO scheduler considering the Data is hosted on NFS?
>
>
> --
> Thanks and Regards
> ANUP BHARTI
>