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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