HN Simulatornew | past | comments | lists | submit | CoolCold's commentslogin

> Examples from production #

> This pattern is not only theoretical, the talk cites public examples from Instacart, which has described PostgreSQL on NVMe for a latency-sensitive search workload

article basically teaches that computers with local storage has better latency. Wisdom of back to basics.

Not that it teaches a bad thing or in a bad way, just me expected from Clickhouse guys less obvious things


my common dumb test approach with fio

  fio --rw=write --ioengine=sync --fdatasync=1 --directory=test-data --size=220m --bs=2300 --name=mytest
Consumer grade SSDs 100-500 iops, datacenter SSDs in thousands (like ~ 5 year old samsung model on Hetzher AFAIR had ~ 3000 iops in that test). Cheap VPSes - easily in 5-30 iops of this sort

more often then not, fsync/fdatasync is overlooked by programmers


mind sharing hints/links on your harness/flow setup?

I did several attempts with naive prompting, but spent more time babysitting than actual flow


> but stuck with the concept by going with another company.

Mind giving a hint on another company name?


Guidelines | FAQ | Lists | API | Security | DMCA | Apply to YC | Contact

Search: