What is the name of the domain?
All Domains
What is the error number?
Severe latency issues
What is the error message?
Severe latency issues
What is the issue you’re encountering
Severe latency issues
What steps have you taken to resolve the issue?
I’ve gathered material for the cloudflare team to analyze.
you asked for an mtr and I sent it to you in the past, but I don’t think there’s anything wrong with the network itself.
the attached data looks bad for security, so we’ve hidden part of the url and ip.
I think you can trace it with information such as fl, ts, etc.
let me know your cloudflare contact email and I’ll give you the original.
I think the absence of ipv6 is also a characteristic that could infer a problem.
I logged nginx’s $request_time and compared it to what was logged as the problem, and the actual execution time was never more than a second.
It’s clearly not a problem with our server.
below is the js code we used to collect the data and the attachment data format.
the max value of responseGap (responseEnd - responseStart) is 420452.59999996
best wishes and thank you. @mcorreia
(async function(w, n) {
if(!w.performance?.getEntries) return;
const pfm = performance.getEntries()[0];
if(pfm && (pfm.responseEnd - pfm.responseStart > 10000)) {
const cf = await fetch('/cdn-cgi/trace').then(res => res.text()).then(text => text.replace(/[\n\s]+$/s, '').split(/\n+/g).map(row => { const kv = row.split(/=/g); return [kv.shift(), kv.join('=')]})).then(rows => Object.fromEntries(rows));
if(cf?.colo === 'HKG') {
n.sendBeacon('https://****/****', new Blob([JSON.stringify({cftrace:cf, performance:pfm.toJSON()})], {type: 'application/json'}));
}
}
})(window, navigator);
[
{
"cftrace": {
"fl": "582f62",
"h": "www.japanbid.co.kr",
"ip": "125.240.*.190",
"ts": "1747831829.494",
"visit_scheme": "https",
"uag": "Mozilla/5.0 (iPhone; CPU iPhone OS 18_4_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148",
"colo": "HKG",
"sliver": "010-tier1",
"http": "http/3",
"loc": "KR",
"tls": "TLSv1.3",
"sni": "plaintext",
"warp": "off",
"gateway": "off",
"rbi": "off",
"kex": "X25519"
},
"performance": {
"name": "https://www.japanbid.co.kr/*******.*/*****://**.*******.***/******?*******=****+**+*",
"entryType": "navigation",
"startTime": 0,
"duration": 25276,
"initiatorType": "navigation",
"nextHopProtocol": "h3",
"workerStart": 0,
"redirectStart": 0,
"redirectEnd": 0,
"fetchStart": 3,
"domainLookupStart": 3,
"domainLookupEnd": 3,
"connectStart": 3,
"connectEnd": 3,
"secureConnectionStart": 3,
"requestStart": 3,
"responseStart": 344,
"responseEnd": 24921,
"transferSize": 7943,
"encodedBodySize": 7643,
"decodedBodySize": 54869,
"serverTiming": [
{
"name": "cfL4",
"duration": 0,
"description": "?proto=QUIC&rtt=5047890&min_rtt=41441&rtt_var=1173984&sent=470&recv=266&lost=106&retrans=103&sent_bytes=348360&recv_bytes=24778&delivery_rate=41305&cwnd=6241&unsent_bytes=0&cid=c6e91abcd4bfc362&ts=19098&x=16"
}
],
"unloadEventStart": 358,
"unloadEventEnd": 358,
"domInteractive": 25273,
"domContentLoadedEventStart": 25273,
"domContentLoadedEventEnd": 25275.000000000004,
"domComplete": 25275.000000000004,
"loadEventStart": 25275.000000000004,
"loadEventEnd": 25276,
"type": "navigate",
"redirectCount": 0
},
"ip": "125.240.*.190",
"responseGap": 24577
},
...
]
https://xenosi.de/2ikaxeliycvjwjjpiwd26t557lci8pl9kxqcnar0p65np9l20.zip (cf.hkg.json)
What are the steps to reproduce the issue?
Symptoms occur randomly in a large number of unspecified regions.
