Re: Benchmarking: How to identify bottleneck (limiting factor) and achieve "linear scalability"?

2019-01-26 Thread Saurabh Nanda
> > > PGOPTIONS="-c synchronous_commit=off" pgbench -T 3600 -P 10 > > > I am currently running all my benchmarks with synchronous_commit=off and > will get back with my findings. > It seems that PGOPTIONS="-c synchronous_commit=off" has a significant impact. However, I still can not understa

Re: Benchmarking: How to identify bottleneck (limiting factor) and achieve "linear scalability"?

2019-01-26 Thread Saurabh Nanda
Hi Jeff, Thank you for replying. > wal_sync_method=fsync > > Why this change? Actually, I re-checked and noticed that this config section was left to it's default values, which is the following. Since the commented line said `wal_sync_method = fsync`, I _assumed_ that's the default value.

Re: ERROR: found xmin from before relfrozenxid

2019-01-26 Thread Adrien NAYRAT
On 1/26/19 11:56 AM, Mariel Cherkassky wrote: Update to the minor version should be an easy solution - yum update postgresql . What did you mean by carful Sorry, I meant, do not forget to apply update to be sure same bug do not happen again.

Re: ERROR: found xmin from before relfrozenxid

2019-01-26 Thread Mariel Cherkassky
Update to the minor version should be an easy solution - yum update postgresql . What did you mean by carful On Sat, Jan 26, 2019, 12:48 PM Adrien NAYRAT On 1/25/19 6:20 PM, Mariel Cherkassky wrote: > > I'm getting this issue when I try to connect to a specific db. Does it > > matters what table

Re: ERROR: found xmin from before relfrozenxid

2019-01-26 Thread Adrien NAYRAT
On 1/25/19 6:20 PM, Mariel Cherkassky wrote: I'm getting this issue when I try to connect to a specific db. Does it matters what table I specify ? Should I just choose a random table from the problematic db? If I'll dump the db and restore it it can help ? Error message is on "db1.public.table