On Tue, Apr 19, 2016 at 5:28 PM, Bill Ross <r...@cgl.ucsf.edu> wrote:

> I've been running an index build for almost an hour on my 30G server that
> takes ~ 20 mins on my puny old macbook.
>
> It seems like I've tuned all I can.. what am I missing?
>
>
Concurrent traffic on the server ? Locks / conflicts with running traffic?

>From a parameter perspective, look at maintenance_work_mem.

--Scott



> Thanks,
> Bill
>
> Records to index: 33305041
>
> --- Server:
>
>  PostgreSQL 9.2.15 on x86_64-redhat-linux-gnu, compiled by gcc (GCC) 4.8.3
> 20140
> 911 (Red Hat 4.8.3-9), 64-bit
>
> shared_buffers = 8GB            # min 128kB
> temp_buffers = 2GB            # min 800kB
> work_mem = 8GB                # min 64kB
> checkpoint_segments = 256        # in logfile segments, min 1, 16MB each
> seq_page_cost = 1.0            # measured on an arbitrary scale
> random_page_cost = 1.0            # same scale as above
> effective_cache_size = 20GB
>
>   PID   USER        PR  NI  VIRT    RES  SHR S %CPU %MEM    TIME+ COMMAND
>  4069 ec2-user  20   0 8596m 1.7g 1.7g R 99.8  5.6  67:48.36 postgres
>
> Macbook:
>  PostgreSQL 9.4.4 on x86_64-apple-darwin14.3.0, compiled by Apple LLVM
> version 6.1.0 (clang-602.0.53) (based on LLVM 3.6.0svn), 64-bit
>
> shared_buffers = 2048MB            # min 128kB
> temp_buffers = 32MB            # min 800kB
> work_mem = 8MB                # min 64kB
> dynamic_shared_memory_type = posix    # the default is the first option
> checkpoint_segments = 32        # in logfile segments, min 1, 16MB each
>
> PID    COMMAND      %CPU TIME     #TH   #WQ  #PORTS MEM    PURG CMPRS  PGRP
> 52883  postgres     91.0 02:16:14 1/1   0    7      1427M+ 0B 622M-  52883
>
>
>
>
>
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