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<div class="moz-cite-prefix">Hi,<br>
<br>
Yes, more than 2 threads won't help much in practise as disc
access is the limiting resource for import (not CPU bound!). So
the default settings are already optimal in many cases.<br>
<br>
> 1. what is the pool 1 and pool 2?<br>
<br>
That are the standard names of the
java.util.concurrent.ExecutorService I think. See PbfDecoder,
which is from osmosis.<br>
<br>
<div><br>
</div>
<div>> For Europe download from geofabrik, this step take 50
minutes.</div>
<br>
You can try to put input (PBF) and output files (GH folder) on two
separate discs, preferable SSD.<br>
<br>
Regards,<br>
Peter<br>
<br>
On 03.07.2015 01:39, John Zhao wrote:<br>
</div>
<blockquote
cite="mid:CA+EBg9R1Jfh76+QuwY-xnq1Vp9Y5L1WmesYuwmWXBvuY_i_TVA@mail.gmail.com"
type="cite">
<div dir="ltr">Hi,
<div><br>
</div>
<div>I put parameter:</div>
<div>.put("osmreader.workerThreads", Math.max(2,
Runtime.getRuntime().availableProcessors()));</div>
<div><br>
</div>
<div>My CPU has 32 cores.</div>
<div>And I saw the log as below. It looks like this worked as we
thought.</div>
<div>But I have a few questions:</div>
<div>1. what is the pool 1 and pool 2?</div>
<div>2. what the load of machine is pretty low, like 2-5. I
thought it should be pretty high.</div>
<div>3. basically, this step is just convert pbf file to
internal osm entity object?</div>
<div><br>
</div>
<div>For Europe download from geofabrik, this step take 50
minutes.</div>
<div><br>
</div>
<div>
<div>22:33:23.967 [pool-1-thread-14] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div>22:33:23.968 [pool-1-thread-6] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div>22:33:23.968 [pool-1-thread-23] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div>22:33:23.969 [pool-1-thread-5] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div>22:33:23.969 [pool-1-thread-11] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div>22:33:23.969 [pool-1-thread-12] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div>22:33:23.970 [pool-1-thread-22] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div>22:33:23.970 [pool-1-thread-2] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div>22:33:23.970 [pool-1-thread-21] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div>22:33:23.971 [pool-1-thread-25] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div><br>
</div>
<div>
<div>23:19:38.130 [pool-2-thread-5] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div>23:19:38.142 [pool-2-thread-21] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div>23:19:38.153 [pool-2-thread-13] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div>23:19:38.164 [pool-2-thread-31] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div>23:19:38.176 [pool-2-thread-12] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div>23:19:38.186 [pool-2-thread-24] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div>23:19:38.193 [pool-2-thread-4] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div>23:19:38.203 [pool-2-thread-32] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div>23:19:38.209 [pool-2-thread-22] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div>23:19:38.218 [pool-2-thread-19] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div>23:19:38.226 [pool-2-thread-3] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
<div>23:19:38.238 [pool-2-thread-27] DEBUG
c.g.reader.pbf.PbfBlobDecoder - Processing OSM primitive
group.</div>
</div>
<div>
<div class="gmail_signature"><b>Best Regards,</b>
<div><b>ZhiQiang ZHAO</b></div>
</div>
</div>
</div>
</div>
<br>
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