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Posted to dev@pagespeed.apache.org by GitBox <gi...@apache.org> on 2019/05/09 19:08:56 UTC
[GitHub] [incubator-pagespeed-mod] conandrum commented on issue #1882:
Pagespeed rating drops after a couple of hours? Why?
conandrum commented on issue #1882: Pagespeed rating drops after a couple of hours? Why?
URL: https://github.com/apache/incubator-pagespeed-mod/issues/1882#issuecomment-491028928
Thanks for replying: I have read that page when setting things up.
My test site is http://134.209.247.233/ (no domain, no SSL, no traffic)
This is why I chose to my setup as follows:
ModPagespeed on
AddOutputFilterByType MOD_PAGESPEED_OUTPUT_FILTER text/html
ModPagespeedFileCachePath "/var/cache/mod_pagespeed/"
ModPagespeedLogDir "/var/log/pagespeed"
ModPagespeedSslCertDirectory "/etc/ssl/certs"
ModPagespeedStatisticsLogging on
ModPagespeedEnableCachePurge on
ModPagespeedPurgeMethod PURGE
ModPagespeedFileCacheSizeKb 2048000
ModPagespeedFileCacheCleanIntervalMs 3600000
ModPagespeedFileCacheInodeLimit 500000
ModPagespeedDefaultSharedMemoryCacheKB 50000
ModPagespeedImageMaxRewritesAtOnce -1
ModPagespeedLoadFromFileCacheTtlMs 31536000000
ModPagespeedLoadFromFileMatch "^https?://134.209.247.233/" "/home/hallonpower/public_html/"
ModPagespeedLoadFromFileRuleMatch disallow .*
ModPagespeedLoadFromFileRuleMatch allow \.css$
ModPagespeedLoadFromFileRuleMatch allow \.jpe?g$
ModPagespeedLoadFromFileRuleMatch allow \.png$
ModPagespeedLoadFromFileRuleMatch allow \.gif$
ModPagespeedLoadFromFileRuleMatch allow \.js$
ModPagespeedLoadFromFileRuleMatch allow \.svg$
ModPagespeedDisallow "*/admin/*"
ModPagespeedFetchHttps enable
ModPagespeedRewriteLevel CoreFilters
ModPagespeedEnableFilters remove_comments,collapse_whitespace,elide_attributes,trim_urls
ModPagespeedDomain http://fonts.googleapis.com
ModPagespeedGoogleFontCssInlineMaxBytes 20000
ModPagespeedEnableFilters inline_google_font_css
ModPagespeedEnableFilters lazyload_images
ModPagespeedEnableFilters responsive_images
ModPagespeedEnableFilters responsive_images_zoom
ModPagespeedEnableFilters insert_image_dimensions
https://www.modpagespeed.com/doc/faq#varying-results states:
There are two (relatively) common situations that may lead up to a fluctuating level of optimization in the output:
1.
Low traffic (TRUE FOR THIS TEST SITE - test was without traffic for 2 hours)
short http expiry times for image, css and javascript (increase the http expiry or set up LoadFromFile)
ModPagespeedFileCacheCleanIntervalMs 3600000
ModPagespeedLoadFromFileMatch "^https?://134.209.247.233/" "/home/hallonpower/public_html/"
ModPagespeedLoadFromFileCacheTtlMs 31536000000
2. High cache churn rates:
caches are sized too small, (Size the cache to 3 to 4 times the size of the original assets)
ModPagespeedFileCacheSizeKb 2048000
ModPagespeedFileCacheInodeLimit 500000
ModPagespeedDefaultSharedMemoryCacheKB 50000
3. If the above did not help, the admin pages offer various tools that may assist in diagnosing what happens.
Question:
1. ModPagespeedFileCacheCleanIntervalMs 3600000 = 1 hour
If I increase this to 86400000 (24 hours) this should stop early expiry?
2. ModPagespeedDefaultSharedMemoryCacheKB 50000
How do I know if this is enough or not?
3. Anything else you see that I may be doing wrong? Been playing with pagespeed for only a week.
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