Hi all!
When I upload assets to cloud storage with `gsutil cp -z js,css,html`,
then their TTFB (Time To First Byte) on serving increasing from ~20ms to
180ms.
This is big performance impact. Why is this happening and how to solve this?
Here more samples (URLs are still valid, if you want to try yourself):
$ ab -c 5 -n 50 https://storage.googleapis.com/latencytest/test-raw.txt
Concurrency Level: 5
Time taken for tests: 2.048 seconds
Complete requests: 50
Failed requests: 0
Total transferred: 45710 bytes
HTML transferred: 8050 bytes
Requests per second: 24.41 [#/sec] (mean)
Time per request: 204.846 [ms] (mean)
Time per request: 40.969 [ms] (mean, across all concurrent
requests)
Transfer rate: 21.79 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 88 117 16.7 112 160
Processing: 21 73 112.8 36 487
Waiting: 21 71 113.3 34 487
Total: 122 189 118.4 146 613
$ ab -c 5 -n 50 https://storage.googleapis.com/latencytest/test.txt
Concurrency Level: 5
Time taken for tests: 3.374 seconds
Complete requests: 50
Failed requests: 0
Total transferred: 45150 bytes
HTML transferred: 7250 bytes
Requests per second: 14.82 [#/sec] (mean)
Time per request: 337.403 [ms] (mean)
Time per request: 67.481 [ms] (mean, across all concurrent
requests)
Transfer rate: 13.07 [Kbytes/sec] received
Connection Times (ms)
min mean[+/-sd] median max
Connect: 90 109 9.0 107 136
Processing: 174 206 44.6 190 389
Waiting: 172 204 44.3 189 384
Total: 274 315 47.3 299 495
curl output for gzipped file:
$ curl -s -v https://storage.googleapis.com/latencytest/test.txt >
/dev/null
* Trying 2a00:1450:400e:805::2010...
* Connected to storage.googleapis.com (2a00:1450:400e:805::2010) port
443 (#0)
* TLS 1.2 connection using TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
* Server certificate: *.storage.googleapis.com
* Server certificate: Google Internet Authority G2
* Server certificate: GeoTrust Global CA
> GET /latencytest/test.txt HTTP/1.1
> Host: storage.googleapis.com
> User-Agent: curl/7.43.0
> Accept: */*
>
< HTTP/1.1 200 OK
< X-GUploader-UploadID:
AEnB2UpBZ1SoG2fiD3_qSOmIWWvL86Kd-r21kXOS08UlvMOc90Eco-vd3ol3NnwDrkJKwKk7zav0ePdp9QYXm7lt4NdV39h-VQ
< Date: Tue, 17 Jan 2017 20:44:19 GMT
< Cache-Control: no-transform
< Expires: Wed, 17 Jan 2018 20:44:19 GMT
< Last-Modified: Mon, 16 Jan 2017 13:46:54 GMT
< ETag: "88b49948e59eaad05d60a52001b50d7a"
< x-goog-generation: 1484574414392000
< x-goog-metageneration: 2
< x-goog-stored-content-encoding: gzip
< x-goog-stored-content-length: 145
< Content-Type: text/plain
< Content-Encoding: gzip
< Content-Language: en
< x-goog-hash: crc32c=MlL4Uw==
< x-goog-hash: md5=iLSZSOWeqtBdYKUgAbUNeg==
< x-goog-storage-class: STANDARD
< Accept-Ranges: bytes
< Server: UploadServer
< Alt-Svc: quic=":443"; ma=2592000; v="35,34"
< Transfer-Encoding: chunked
<
{ [261 bytes data]
* Connection #0 to host storage.googleapis.com left intact
--
You received this message because you are subscribed to the Google Groups
"Google App Engine" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at https://groups.google.com/group/google-appengine.
To view this discussion on the web visit
https://groups.google.com/d/msgid/google-appengine/5f934bee-cd70-4487-927a-cbceda4f64e5%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
