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Database connections kept open; a click's wait is measured (#241, #245, #246)

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#241: on production, All Subscriptions' query runs in 31 ms, unread oldest-first in 30, the
feed list's count in 5, generic plans included (EXPLAIN ANALYZE, BUFFERS, read only), against
0.3-1.6 s in ipx. A new Postgres connection takes 80-330 ms to open, and a page load asks for
more than are idle: four of six slow loads came as the pool grew (3 to 6, 2 to 6, 3 to 5, 6 to
8), and 20 requests at once took a median 414 ms while the pool grew from 8 to 20. The daemon
and the directory's server now keep their whole pool open (min = max); a command such as `ipx
status`, and the tests, which share the server's 100 connections, open as they need.

#246: the page reports list_shown, the ms from asking for a list to drawing it, with the view
and filter, under the click's trace; background refreshes are not timed. Timings skip report()'s
once-a-minute limit, which is for errors in a loop. A dashboard panel and table, and the prod
check, read it.

#245: the load test's browse scenario subscribes by OPML and leaves the Directory, which is
ipx-directory's since #204, to it.

CLAUDE.md records the owner's leave to EXPLAIN (ANALYZE, BUFFERS) any query on production,
read only.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Ray Slakinski
2026-10-15 14:52:14 +00:00
parent 8f19d88fc9
commit 62a3241139
16 changed files with 89 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
web/src/events.ts
View File

@@ -6,7 +6,7 @@ let sse: EventSource;
/// the app is in the background, when everything is missed (#168).
const catchUp=(()=>{ let t: number; return ()=>{ clearTimeout(t); t=setTimeout(()=>{
loadFeeds(true).catch(()=>{});
if(S.feed) loadEntries().catch(()=>{});
if(S.feed) loadEntries(false,true).catch(()=>{});
},300); }; })();
document.addEventListener('visibilitychange',()=>{ if(!document.hidden) catchUp(); });
let dropped=false;
@@ -16,7 +16,7 @@ function connect(){
sse.onopen=()=>{ if(dropped){ dropped=false; catchUp(); } };
const soon=(fn: ()=>void,ms=500)=>{ let t: number; return ()=>{ clearTimeout(t); t=setTimeout(fn,ms); }; };
// Caught: a network gone when one fires (a laptop asleep) was an unhandled rejection (#219).
const refreshEntries=soon(()=>{ if(S.feed) loadEntries().catch(()=>{}); });
const refreshEntries=soon(()=>{ if(S.feed) loadEntries(false,true).catch(()=>{}); });
// Every scan's events reach everyone; only this person's feeds are theirs to show or refresh.
const mine=(id: string)=>S.feeds.some(f=>f.id===id);
sse.onmessage=m=>{
@@ -41,7 +41,7 @@ function connect(){
if(!mine(ev.feed)) return;
if(ev.saved_s>0&&document.querySelector('.dapend')) toast(`DeadAir is done: ${shorter(ev.saved_s)}`);
refreshEntries();
if(S.sel) loadEntries().then(()=>{ const e=cur(); if(e) showDetail(e); }).catch(()=>{});
if(S.sel) loadEntries(false,true).then(()=>{ const e=cur(); if(e) showDetail(e); }).catch(()=>{});
}
else if(ev.ev==='download_error'){
const bar=document.querySelector(`.dlbar[data-bar="${ev.enclosure}"]`);