Wow, this is pretty eye-opening for anyone looking to use FreeBSD in production as a database server. Anyone from FreeBSD devs have any thoughts on why we're so far behind?
PostgreSQL Benchmark on FreeBSD, CentOS, Ubuntu Debian and OpenSUSE
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Re: PostgreSQL Benchmark on FreeBSD, CentOS, Ubuntu Debian and OpenSUSE
#12I wasn’t expecting such a drastic difference between FreeBSD and the linux distros. I wonder if this is a general BSD thing, or if it was FreeBSD specific (or filesystem or drivers).
Re: PostgreSQL Benchmark on FreeBSD, CentOS, Ubuntu Debian and OpenSUSE
#13I wasn’t expecting such a drastic difference between FreeBSD and the linux distros. I wonder if this is a general BSD thing, or if it was FreeBSD specific (or filesystem or drivers).
Re: PostgreSQL Benchmark on FreeBSD, CentOS, Ubuntu Debian and OpenSUSE
#14> 32GiB read only: read only test, the dataset does not fit into the PostgreSQL cache > 200GiB read only: read only test, the dataset fits into the PostgreSQL cache How come a larger dataset fit into the PostgreSQL cache and not the smaller one ?
Re: PostgreSQL Benchmark on FreeBSD, CentOS, Ubuntu Debian and OpenSUSE
#15Wow, this is pretty eye-opening for anyone looking to use FreeBSD in production as a database server. Anyone from FreeBSD devs have any thoughts on why we're so far behind?
I think you meant so far ahead.
Re: PostgreSQL Benchmark on FreeBSD, CentOS, Ubuntu Debian and OpenSUSE
#16Re: PostgreSQL Benchmark on FreeBSD, CentOS, Ubuntu Debian and OpenSUSE
#17Re: PostgreSQL Benchmark on FreeBSD, CentOS, Ubuntu Debian and OpenSUSE
#18I don’t think it’s linux raid software overhead but on the fly compression decompression of ZFS which could mean the BSDs are doing less IO than their Linux counterparts. I don’t know for sure it’s just a hunch.
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Re: PostgreSQL Benchmark on FreeBSD, CentOS, Ubuntu Debian and OpenSUSE
#19At least Debian and Ubuntu has cfq as the default IO scheduler which probably is not the best choice here.
Re: PostgreSQL Benchmark on FreeBSD, CentOS, Ubuntu Debian and OpenSUSE
#20At least Debian and Ubuntu has cfq as the default IO scheduler which probably is not the best choice here.
Been a while since I played with those settings. Is the usual recommendation still to stick with the deadline scheduler for DB workloads?