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https://issues.apache.org/jira/browse/COUCHDB-964?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Orrell updated COUCHDB-964:
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Summary: Large memory usage downloading attachments (was: Large memory
usage downloading attachements)
> Large memory usage downloading attachments
> ------------------------------------------
>
> Key: COUCHDB-964
> URL: https://issues.apache.org/jira/browse/COUCHDB-964
> Project: CouchDB
> Issue Type: Bug
> Components: HTTP Interface
> Affects Versions: 1.0.1
> Environment: Linux, Erlang R14B
> Reporter: David Orrell
>
> When downloading a large attachment the CouchDB process appears to load the
> entire attachment in memory before data is sent to the client. I have a 1.5
> GB attachment and the CouchDB process grows by approximately this amount per
> client connection.
> For example (as reported by Bram Nejit):
> dd if=/dev/urandom of=/tmp/test.bin count=50000 bs=10240
> Put test.bin as an attachment in a coucdb database
> Run
> for i in {0..50};do curl http://localhost:5984/[test
> database]/[doc_id]/test.bin > /dev/null 2>&1 & done
> This will create 50 curl processes which download from your couchdb. Looking
> at the memory consumption of couchdb, it seems like it is loading large parts
> of the file into memory.
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