Maybe you will find time to benchamark xfs vs ext4 (with and without journaling enabled on ext4).
Nice comparison also could be rhel 6.5 with its newest kernel 2.6.32-X vs RHEL 7.0 and kernel 3.10. I was looking for some guidance what to choose and there is very poor information about such things. -- Przemysław Deć Senior Solutions Architect Linux Polska Sp. z o.o 2015-04-01 10:37 GMT+02:00 Przemysław Deć <przemyslaw....@linuxpolska.pl>: > Maybe you will find time to benchamark xfs vs ext4 (with and without > journaling enabled on ext4). > > Nice comparison also could be rhel 6.5 with its newest kernel 2.6.32-X vs > RHEL 7.0 and kernel 3.10. > > I was looking for some guidance what to choose and there is very poor > information about such things. > > -- > Przemysław Deć > Senior Solutions Architect > Linux Polska Sp. z o.o > > > 2015-03-31 22:41 GMT+02:00 Mel Llaguno <mllag...@coverity.com>: > >> It would be interesting to get raw performance benchmarks in addition to >> PG specific benchmarks. I’ve been measuring raw I/O performance of a few >> of our systems and run the following tests as well: >> >> 1. 10 runs of bonnie++ >> 2. 5 runs of hdparm -Tt >> 3. Using a temp file created on the SSD, dd if=tempfile of=/dev/null bs=1M >> count=1024 && echo 3 > /proc/sys/vm/drop_caches; dd >> if=tempfileof=/dev/null bs=1M count=1024 >> 4. Using phoronix benchmarks -> stream / ramspeed / compress-7zip >> >> >> I was curious to measure the magnitude of difference between HDD -> SSD. I >> would expect significant differences between SSD -> PCI-E Flash. >> >> I’ve included some metrics from some previous runs vs. different types of >> SSDs (OWC Mercury Extreme 6G which is our standard SSD, an Intel S3700 >> SSD, a Samsung SSD 840 PRO) vs. some standard HDD from Western Digital >> and HGST. I put in a req for a 960Gb Mercury Excelsior PCI-E SSD which >> hasn’t yet materialized ... >> >> Thanks, M. >> >> Mel Llaguno • Staff Engineer – Team Lead >> Office: +1.403.264.9717 x310 >> www.coverity.com <http://www.coverity.com/> • Twitter: @coverity >> Coverity by Synopsys >> >> >> On 3/31/15, 1:52 PM, "Josh Berkus" <j...@agliodbs.com> wrote: >> >> >All, >> > >> >I currently have access to a matched pair of 20-core, 128GB RAM servers >> >with SSD-PCI storage, for about 2 weeks before they go into production. >> > Are there any performance tests people would like to see me run on >> >these? Otherwise, I'll just do some pgbench and DVDStore. >> > >> >-- >> >Josh Berkus >> >PostgreSQL Experts Inc. >> >http://pgexperts.com >> > >> > >> >-- >> >Sent via pgsql-performance mailing list ( >> pgsql-performance@postgresql.org) >> >To make changes to your subscription: >> >http://www.postgresql.org/mailpref/pgsql-performance >> >> >> >> -- >> Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org >> ) >> To make changes to your subscription: >> http://www.postgresql.org/mailpref/pgsql-performance >> >> >
