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<ol class="chapter"><li class="chapter-item expanded affix "><li class="part-title">Introduction</li><li class="chapter-item expanded "><a href="../../welcome_and_overview.html">Welcome and Overview</a></li><li class="chapter-item expanded affix "><li class="part-title">Setup</li><li class="chapter-item expanded "><a href="../../setup/installation.html">Installation</a></li><li class="chapter-item expanded "><a href="../../postgres.html">Using Postgres</a></li><li class="chapter-item expanded "><a href="../../reverse_proxy.html">Configuring a Reverse Proxy</a></li><li class="chapter-item expanded "><a href="../../setup/forward_proxy.html">Configuring a Forward/Outbound Proxy</a></li><li class="chapter-item expanded "><a href="../../turn-howto.html">Configuring a Turn Server</a></li><li class="chapter-item expanded "><a href="../../delegate.html">Delegation</a></li><li class="chapter-item expanded affix "><li class="part-title">Upgrading</li><li class="chapter-item expanded "><a href="../../upgrade.html">Upgrading between Synapse Versions</a></li><li class="chapter-item expanded "><a href="../../MSC1711_certificates_FAQ.html">Upgrading from pre-Synapse 1.0</a></li><li class="chapter-item expanded affix "><li class="part-title">Usage</li><li class="chapter-item expanded "><a href="../../federate.html">Federation</a></li><li class="chapter-item expanded "><a href="../../usage/configuration/index.html">Configuration</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../usage/configuration/homeserver_sample_config.html">Homeserver Sample Config File</a></li><li class="chapter-item expanded "><a href="../../usage/configuration/logging_sample_config.html">Logging Sample Config File</a></li><li class="chapter-item expanded "><a href="../../structured_logging.html">Structured Logging</a></li><li class="chapter-item expanded "><a href="../../templates.html">Templates</a></li><li class="chapter-item expanded "><a href="../../usage/configuration/user_authentication/index.html">User Authentication</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../usage/configuration/user_authentication/single_sign_on/index.html">Single-Sign On</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../openid.html">OpenID Connect</a></li><li class="chapter-item expanded "><a href="../../usage/configuration/user_authentication/single_sign_on/saml.html">SAML</a></li><li class="chapter-item expanded "><a href="../../usage/configuration/user_authentication/single_sign_on/cas.html">CAS</a></li><li class="chapter-item expanded "><a href="../../sso_mapping_providers.html">SSO Mapping Providers</a></li></ol></li><li class="chapter-item expanded "><a href="../../password_auth_providers.html">Password Auth Providers</a></li><li class="chapter-item expanded "><a href="../../jwt.html">JSON Web Tokens</a></li><li class="chapter-item expanded "><a href="../../usage/configuration/user_authentication/refresh_tokens.html">Refresh Tokens</a></li></ol></li><li class="chapter-item expanded "><a href="../../CAPTCHA_SETUP.html">Registration Captcha</a></li><li class="chapter-item expanded "><a href="../../application_services.html">Application Services</a></li><li class="chapter-item expanded "><a href="../../server_notices.html">Server Notices</a></li><li class="chapter-item expanded "><a href="../../consent_tracking.html">Consent Tracking</a></li><li class="chapter-item expanded "><a href="../../development/url_previews.html">URL Previews</a></li><li class="chapter-item expanded "><a href="../../user_directory.html">User Directory</a></li><li class="chapter-item expanded "><a href="../../message_retention_policies.html">Message Retention Policies</a></li><li class="chapter-item expanded "><a href="../../modules/index.html">Pluggable Modules</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../modules/writing_a_module.html">Writing a module</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="../../modules/spam_checker_cal
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<h2 id="some-useful-sql-queries-for-synapse-admins"><a class="header" href="#some-useful-sql-queries-for-synapse-admins">Some useful SQL queries for Synapse Admins</a></h2>
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<h2 id="size-of-full-matrix-db"><a class="header" href="#size-of-full-matrix-db">Size of full matrix db</a></h2>
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<p><code>SELECT pg_size_pretty( pg_database_size( 'matrix' ) );</code></p>
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<h3 id="result-example"><a class="header" href="#result-example">Result example:</a></h3>
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<pre><code>pg_size_pretty
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----------------
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6420 MB
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(1 row)
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</code></pre>
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<h2 id="show-top-20-larger-rooms-by-state-events-count"><a class="header" href="#show-top-20-larger-rooms-by-state-events-count">Show top 20 larger rooms by state events count</a></h2>
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<pre><code class="language-sql">SELECT r.name, s.room_id, s.current_state_events
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FROM room_stats_current s
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LEFT JOIN room_stats_state r USING (room_id)
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ORDER BY current_state_events DESC
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LIMIT 20;
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</code></pre>
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<p>and by state_group_events count:</p>
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<pre><code class="language-sql">SELECT rss.name, s.room_id, count(s.room_id) FROM state_groups_state s
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LEFT JOIN room_stats_state rss USING (room_id)
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GROUP BY s.room_id, rss.name
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ORDER BY count(s.room_id) DESC
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LIMIT 20;
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</code></pre>
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<p>plus same, but with join removed for performance reasons:</p>
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<pre><code class="language-sql">SELECT s.room_id, count(s.room_id) FROM state_groups_state s
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GROUP BY s.room_id
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ORDER BY count(s.room_id) DESC
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LIMIT 20;
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</code></pre>
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<h2 id="show-top-20-larger-tables-by-row-count"><a class="header" href="#show-top-20-larger-tables-by-row-count">Show top 20 larger tables by row count</a></h2>
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<pre><code class="language-sql">SELECT relname, n_live_tup as rows
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FROM pg_stat_user_tables
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ORDER BY n_live_tup DESC
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LIMIT 20;
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</code></pre>
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<p>This query is quick, but may be very approximate, for exact number of rows use <code>SELECT COUNT(*) FROM <table_name></code>.</p>
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<h3 id="result-example-1"><a class="header" href="#result-example-1">Result example:</a></h3>
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<pre><code>state_groups_state - 161687170
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event_auth - 8584785
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event_edges - 6995633
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event_json - 6585916
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event_reference_hashes - 6580990
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events - 6578879
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received_transactions - 5713989
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event_to_state_groups - 4873377
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stream_ordering_to_exterm - 4136285
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current_state_delta_stream - 3770972
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event_search - 3670521
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state_events - 2845082
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room_memberships - 2785854
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cache_invalidation_stream - 2448218
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state_groups - 1255467
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state_group_edges - 1229849
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current_state_events - 1222905
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users_in_public_rooms - 364059
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device_lists_stream - 326903
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user_directory_search - 316433
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</code></pre>
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<h2 id="show-top-20-rooms-by-new-events-count-in-last-1-day"><a class="header" href="#show-top-20-rooms-by-new-events-count-in-last-1-day">Show top 20 rooms by new events count in last 1 day:</a></h2>
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<pre><code class="language-sql">SELECT e.room_id, r.name, COUNT(e.event_id) cnt FROM events e
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LEFT JOIN room_stats_state r USING (room_id)
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WHERE e.origin_server_ts >= DATE_PART('epoch', NOW() - INTERVAL '1 day') * 1000 GROUP BY e.room_id, r.name ORDER BY cnt DESC LIMIT 20;
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</code></pre>
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<h2 id="show-top-20-users-on-homeserver-by-sent-events-messages-at-last-month"><a class="header" href="#show-top-20-users-on-homeserver-by-sent-events-messages-at-last-month">Show top 20 users on homeserver by sent events (messages) at last month:</a></h2>
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<pre><code class="language-sql">SELECT user_id, SUM(total_events)
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FROM user_stats_historical
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WHERE TO_TIMESTAMP(end_ts/1000) AT TIME ZONE 'UTC' > date_trunc('day', now() - interval '1 month')
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GROUP BY user_id
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ORDER BY SUM(total_events) DESC
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LIMIT 20;
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</code></pre>
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<h2 id="show-last-100-messages-from-needed-user-with-room-names"><a class="header" href="#show-last-100-messages-from-needed-user-with-room-names">Show last 100 messages from needed user, with room names:</a></h2>
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<pre><code class="language-sql">SELECT e.room_id, r.name, e.event_id, e.type, e.content, j.json FROM events e
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LEFT JOIN event_json j USING (room_id)
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LEFT JOIN room_stats_state r USING (room_id)
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WHERE sender = '@LOGIN:example.com'
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AND e.type = 'm.room.message'
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ORDER BY stream_ordering DESC
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LIMIT 100;
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</code></pre>
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<h2 id="show-top-20-larger-tables-by-storage-size"><a class="header" href="#show-top-20-larger-tables-by-storage-size">Show top 20 larger tables by storage size</a></h2>
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<pre><code class="language-sql">SELECT nspname || '.' || relname AS "relation",
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pg_size_pretty(pg_total_relation_size(C.oid)) AS "total_size"
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FROM pg_class C
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LEFT JOIN pg_namespace N ON (N.oid = C.relnamespace)
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WHERE nspname NOT IN ('pg_catalog', 'information_schema')
|
||
|
|
AND C.relkind <> 'i'
|
||
|
|
AND nspname !~ '^pg_toast'
|
||
|
|
ORDER BY pg_total_relation_size(C.oid) DESC
|
||
|
|
LIMIT 20;
|
||
|
|
</code></pre>
|
||
|
|
<h3 id="result-example-2"><a class="header" href="#result-example-2">Result example:</a></h3>
|
||
|
|
<pre><code>public.state_groups_state - 27 GB
|
||
|
|
public.event_json - 9855 MB
|
||
|
|
public.events - 3675 MB
|
||
|
|
public.event_edges - 3404 MB
|
||
|
|
public.received_transactions - 2745 MB
|
||
|
|
public.event_reference_hashes - 1864 MB
|
||
|
|
public.event_auth - 1775 MB
|
||
|
|
public.stream_ordering_to_exterm - 1663 MB
|
||
|
|
public.event_search - 1370 MB
|
||
|
|
public.room_memberships - 1050 MB
|
||
|
|
public.event_to_state_groups - 948 MB
|
||
|
|
public.current_state_delta_stream - 711 MB
|
||
|
|
public.state_events - 611 MB
|
||
|
|
public.presence_stream - 530 MB
|
||
|
|
public.current_state_events - 525 MB
|
||
|
|
public.cache_invalidation_stream - 466 MB
|
||
|
|
public.receipts_linearized - 279 MB
|
||
|
|
public.state_groups - 160 MB
|
||
|
|
public.device_lists_remote_cache - 124 MB
|
||
|
|
public.state_group_edges - 122 MB
|
||
|
|
</code></pre>
|
||
|
|
<h2 id="show-rooms-with-names-sorted-by-events-in-this-rooms"><a class="header" href="#show-rooms-with-names-sorted-by-events-in-this-rooms">Show rooms with names, sorted by events in this rooms</a></h2>
|
||
|
|
<p><code>echo "select event_json.room_id,room_stats_state.name from event_json,room_stats_state where room_stats_state.room_id=event_json.room_id" | psql synapse | sort | uniq -c | sort -n</code></p>
|
||
|
|
<h3 id="result-example-3"><a class="header" href="#result-example-3">Result example:</a></h3>
|
||
|
|
<pre><code> 9459 !FPUfgzXYWTKgIrwKxW:matrix.org | This Week in Matrix
|
||
|
|
9459 !FPUfgzXYWTKgIrwKxW:matrix.org | This Week in Matrix (TWIM)
|
||
|
|
17799 !iDIOImbmXxwNngznsa:matrix.org | Linux in Russian
|
||
|
|
18739 !GnEEPYXUhoaHbkFBNX:matrix.org | Riot Android
|
||
|
|
23373 !QtykxKocfZaZOUrTwp:matrix.org | Matrix HQ
|
||
|
|
39504 !gTQfWzbYncrtNrvEkB:matrix.org | ru.[matrix]
|
||
|
|
43601 !iNmaIQExDMeqdITdHH:matrix.org | Riot
|
||
|
|
43601 !iNmaIQExDMeqdITdHH:matrix.org | Riot Web/Desktop
|
||
|
|
</code></pre>
|
||
|
|
<h2 id="lookup-room-state-info-by-list-of-room_id"><a class="header" href="#lookup-room-state-info-by-list-of-room_id">Lookup room state info by list of room_id</a></h2>
|
||
|
|
<pre><code class="language-sql">SELECT rss.room_id, rss.name, rss.canonical_alias, rss.topic, rss.encryption, rsc.joined_members, rsc.local_users_in_room, rss.join_rules
|
||
|
|
FROM room_stats_state rss
|
||
|
|
LEFT JOIN room_stats_current rsc USING (room_id)
|
||
|
|
WHERE room_id IN (WHERE room_id IN (
|
||
|
|
'!OGEhHVWSdvArJzumhm:matrix.org',
|
||
|
|
'!YTvKGNlinIzlkMTVRl:matrix.org'
|
||
|
|
)
|
||
|
|
</code></pre>
|
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