When I come to Stack Overflow, I typically do so through a link to my reputation tab so I can see any uncommented downvotes on my posts and try to correct whatever problem/error those votes are flagging up.
The past week or so, I've noticed that if I haven't been on the site for (say) 30+ minutes, that link is very slow to load, on the order of 15-20 seconds (it used to be 1-2 seconds — long enough to notice, not to be bothered). The network tab tells me that after a 307 "Internal redirect", it's https://stackoverflow.com/users/157247/t-j-crowder?tab=reputation itself that's slow (rather than one of the things it depends on). Whereas coming "cold" to other pages on SO (such as the questions page) is near-instantaneous. Going back to that same page when I've been there recently is very fast (sub-second); I guess something's been pulled from storage to the active pool or similar. I've eliminated my browser as the issue, and doubt it's my connection (fiber) as it's page-specific.
Obviously, the questions page is going to be much more aggressively optimized than the reputation tab of a user's activity profile, but this is a sudden and significant slowdown.
It's the same without the ?tab=reputation part, as Shadow Wizard suspected.
Could it be looked at and sped back up to, say, at least the 2-4 second range?
Here's an example from this morning (partial HAR with content below):
HAR with content below [thanks muru!] for the long request and a couple after it, with the content and cookies obscured/removed:
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"version": "1.2",
"creator": {
"name": "WebInspector",
"version": "537.36"
},
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"startedDateTime": "2018-06-28T08:19:07.392Z",
"id": "page_1",
"title": "https://stackoverflow.com/users/157247/t-j-crowder",
"pageTimings": {
"onContentLoad": 20625.65199995879,
"onLoad": 20725.040999939665
}
}
],
"entries": [
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"request": {
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"httpVersion": "http/2.0",
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"name": ":method",
"value": "GET"
},
{
"name": ":authority",
"value": "stackoverflow.com"
},
{
"name": ":scheme",
"value": "https"
},
{
"name": ":path",
"value": "/users/157247/t-j-crowder"
},
{
"name": "upgrade-insecure-requests",
"value": "1"
},
{
"name": "user-agent",
"value": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36"
},
{
"name": "dnt",
"value": "1"
},
{
"name": "accept",
"value": "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8"
},
{
"name": "accept-encoding",
"value": "gzip, deflate, br"
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],
"queryString": [],
"cookies": [
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"name": "obscured",
"value": "obscured",
"expires": null,
"httpOnly": false,
"secure": false
}
],
"headersSize": -1,
"bodySize": 0
},
"response": {
"status": 200,
"statusText": "",
"httpVersion": "http/2.0",
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"name": "cache-control",
"value": "private"
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{
"name": "content-type",
"value": "text/html; charset=utf-8"
},
{
"name": "content-encoding",
"value": "gzip"
},
{
"name": "x-frame-options",
"value": "SAMEORIGIN"
},
{
"name": "set-cookie",
"value": "obscured"
},
{
"name": "x-request-guid",
"value": "39e3378f-c174-41a9-8443-e86efc2f9aae"
},
{
"name": "strict-transport-security",
"value": "max-age=15552000"
},
{
"name": "content-security-policy",
"value": "upgrade-insecure-requests"
},
{
"name": "accept-ranges",
"value": "bytes"
},
{
"name": "date",
"value": "Thu, 28 Jun 2018 08:19:28 GMT"
},
{
"name": "via",
"value": "1.1 varnish"
},
{
"name": "x-served-by",
"value": "cache-lcy19240-LCY"
},
{
"name": "x-cache",
"value": "MISS"
},
{
"name": "x-cache-hits",
"value": "0"
},
{
"name": "x-timer",
"value": "S1530173948.852468,VS0,VE20287"
},
{
"name": "vary",
"value": "Accept-Encoding,Fastly-SSL"
},
{
"name": "x-dns-prefetch-control",
"value": "off"
},
{
"name": "content-length",
"value": "32546"
}
],
"cookies": [
{
"name": "acct",
"value": "obscured",
"path": "/",
"domain": ".stackoverflow.com",
"expires": "2018-12-28T08:19:28.000Z",
"httpOnly": true,
"secure": true
}
],
"content": {
"size": 122963,
"mimeType": "text/html",
"text": "removed"
},
"redirectURL": "",
"headersSize": -1,
"bodySize": -1,
"_transferSize": 33141
},
"cache": {},
"timings": {
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"dns": 7.183000000000001,
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"startedDateTime": "2018-06-28T08:19:27.749Z",
"time": 30.63231006730348,
"request": {
"method": "GET",
"url": "https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js",
"httpVersion": "spdy",
"headers": [
{
"name": "Referer",
"value": "https://stackoverflow.com/"
},
{
"name": "User-Agent",
"value": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36"
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"statusText": "",
"httpVersion": "spdy",
"headers": [
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"name": "date",
"value": "Mon, 18 Jun 2018 19:23:39 GMT"
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{
"name": "content-encoding",
"value": "gzip"
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{
"name": "x-content-type-options",
"value": "nosniff"
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{
"name": "age",
"value": "768347"
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{
"name": "status",
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{
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"value": "1; mode=block"
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{
"name": "last-modified",
"value": "Tue, 20 Dec 2016 18:17:03 GMT"
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"value": "sffe"
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{
"name": "vary",
"value": "Accept-Encoding"
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{
"name": "content-type",
"value": "text/javascript; charset=UTF-8"
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{
"name": "access-control-allow-origin",
"value": "*"
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{
"name": "cache-control",
"value": "public, max-age=31536000, stale-while-revalidate=2592000"
},
{
"name": "accept-ranges",
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"name": "expires",
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}
],
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"content": {
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"text": "removed"
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"redirectURL": "",
"headersSize": -1,
"bodySize": 0,
"_transferSize": 0
},
"cache": {},
"timings": {
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"dns": -1,
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"serverIPAddress": "216.58.210.42",
"_fromCache": "disk",
"pageref": "page_1"
},
{
"startedDateTime": "2018-06-28T08:19:27.749Z",
"time": 30.954592957976274,
"request": {
"method": "GET",
"url": "https://cdn.sstatic.net/Js/stub.en.js?v=de73985fb2ea",
"httpVersion": "spdy",
"headers": [
{
"name": "Referer",
"value": "https://stackoverflow.com/"
},
{
"name": "User-Agent",
"value": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36"
},
{
"name": "DNT",
"value": "1"
}
],
"queryString": [
{
"name": "v",
"value": "de73985fb2ea"
}
],
"cookies": [],
"headersSize": -1,
"bodySize": 0
},
"response": {
"status": 200,
"statusText": "",
"httpVersion": "spdy",
"headers": [
{
"name": "date",
"value": "Thu, 28 Jun 2018 06:09:19 GMT"
},
{
"name": "content-encoding",
"value": "gzip"
},
{
"name": "age",
"value": "29160"
},
{
"name": "x-cache",
"value": "HIT"
},
{
"name": "status",
"value": "200"
},
{
"name": "content-length",
"value": "14227"
},
{
"name": "x-served-by",
"value": "cache-lcy19240-LCY"
},
{
"name": "last-modified",
"value": "Wed, 27 Jun 2018 22:01:01 GMT"
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{
"name": "x-timer",
"value": "S1530166160.551967,VS0,VE0"
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{
"name": "etag",
"value": "\"80cd25562ed41:0\""
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{
"name": "vary",
"value": "Accept-Encoding,Accept-Encoding"
},
{
"name": "content-type",
"value": "application/javascript"
},
{
"name": "via",
"value": "1.1 varnish"
},
{
"name": "cache-control",
"value": "max-age=604800"
},
{
"name": "accept-ranges",
"value": "bytes"
},
{
"name": "x-cache-hits",
"value": "2135"
}
],
"cookies": [],
"content": {
"size": 41272,
"mimeType": "application/javascript",
"text": "removed"
},
"redirectURL": "",
"headersSize": -1,
"bodySize": 0,
"_transferSize": 0
},
"cache": {},
"timings": {
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"dns": -1,
"ssl": -1,
"connect": -1,
"send": 0,
"wait": 10.11800000383705,
"receive": 17.208999954164028,
"_blocked_queueing": 0.5929999751970172
},
"serverIPAddress": "151.101.1.69",
"_fromCache": "disk",
"pageref": "page_1"
}
]
}
}
Tagging as bug because it is indeed "...a reproducible problem on the site that [I] believe is due to a mistake, malfunction, or programming error."
.log.entries[0].time.?tab=reputation.