[GitHub] nickva commented on issue #1125: Very slow replication for some of databases

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nickva commented on issue #1125: Very slow replication for some of databases 
URL: https://github.com/apache/couchdb/issues/1125#issuecomment-360167959
 
 
   
   Thanks for the report,  Sergey 
   
   You might be encountering this issue: https://github.com/apache/couchdb/issues/745
   
   A few questions to help narrow down the cause:
   
    * What is your exact version of CouchDB, is it 2.0.0, 2.1.1 or other
   
    * What is the size distribution of your documents (average, what are the largest ones)
   
    * What are the attachment sizes, what is their distribution (average, largest)
   
   * Are the databases which failed to replicate enough the ones with attachments? Do you have any that don't have attachments and those replicated fast enough?
   
   * If you can attach the contents of these config sections (but sanitize them to not contain database paths, username and other such things): `couchdb`, `replicator`, `chttpd` and `cluster`. It's easy to get those via the node local port (5986 one) and the _config section:
   
   Here is an example of my config from the `replicator` section (jq part is the json pretty printer)
   ```
   curl -s http://<adminuser>:<adminpas>@localhost:15986/_config/replicator | jq '.'
   {
     "startup_jitter": "5000",
     "connection_timeout": "30000",
     "max_churn": "20",
     "interval": "60000",
     "retries_per_request": "5",
     "max_jobs": "500",
     "verify_ssl_certificates": "false",
     "http_connections": "20",
     "ssl_certificate_max_depth": "3",
     "socket_options": "[{keepalive, true}, {nodelay, false}]",
     "worker_processes": "4",
     "worker_batch_size": "500"
   }
   ```
   

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