Hi All,
Thank you so much for your replies!
For my particular use case ("tail -f" multiple files and write the entries
into a db), I'm using pmap to process each file in a separate thread and
for each file, I'm using doseq to write to db. It seems to be working well
(though I still need to benchmark it).
Thanks to your help, I have a better understanding of how doseq, dorun, et.
al. work.
On Friday, October 18, 2013 12:05:50 AM UTC-7, Stefan Kamphausen wrote:
>
> Hi,
>
> On Friday, October 18, 2013 12:12:31 AM UTC+2, Brian Craft wrote:
>>
>> I briefly tried working with the reducers library, which generally made
>> things 2-3 times slower, presumably because I'm using it incorrectly. I
>> would really like to see more reducers examples, e.g. for this case:
>> reading a seq larger than memory, doing transforms on the data, and then
>> executing side effects.
>>
>
> I used reducers for processing lots of XML files. Probably the most
> common pitfall is, that fork only does parallel computation when working
> on a vector. While all the XML data would not have fit into memory, the
> vector of filenames to read from certainly did, and that made a big
> difference. Plus, I reduced the chunksize from default 512 to 1.
>
>
> Cheers,
> Stefan
>
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