jmarantz commented on issue #1686:
URL: 
https://github.com/apache/incubator-pagespeed-ngx/issues/1686#issuecomment-624329354


   You are using nginx I assume as you are posting to the nginx group. Is that
   right?
   
   Do you know if you are using the nginx fetcher or serf? What does your
   config look like? It looks like you have 0 attempts at fetching with serf,
   which makes me think this is a config issue.
   
   
   On Tue, May 5, 2020 at 5:47 PM Andrew Borg <notificati...@github.com> wrote:
   
   > I cannot see the image you posted, these are the stats:
   >
   > active_expensive_operations | 0 | 0
   > cache_backend_hits | 3561103 | 1
   > cache_backend_misses | 653875 | 1
   > cache_batcher_coalesced_gets | 0 | 0
   > cache_batcher_dropped_gets | 0 | 0
   > cache_batcher_queued_gets | 0 | 0
   > cache_deletes | 0 | 0
   > cache_expirations | 457433 | 1
   > cache_extensions | 0 | 0
   > cache_fallbacks | 36750 | 1
   > cache_flush_count | 2 | 1
   > cache_flush_timestamp_ms | 0 | 0
   > cache_hits | 758962 | 1
   > cache_inserts | 76820 | 1
   > cache_misses | 3456016 | 1
   > cache_time_us | 1418254904 | 1
   > central_controller_reconnect_time_ms | 0 | 0
   > child_shutdown_count | 0 | 0
   > compressed_cache_compressed_size | 232267172 | 1
   > compressed_cache_corrupt_payloads | 0 | 0
   > compressed_cache_original_size | 1428624411 | 1
   > converted_meta_tags | 259130 | 1
   > critical_css_beacon_filter_script_added_count | 0 | 0
   > critical_css_no_beacon_due_to_missing_data | 0 | 0
   > critical_css_skipped_due_to_charset | 0 | 0
   > critical_images_beacon_filter_script_added_count | 0 | 0
   > critical_images_expired_count | 0 | 0
   > critical_images_not_found_count | 0 | 0
   > critical_images_valid_count | 0 | 0
   > css_combine_opportunities | 8857 | 1
   > css_elements_moved | 0 | 0
   > css_file_count_reduction | 0 | 0
   > css_filter_blocks_rewritten | 708 | 1
   > css_filter_fallback_failures | 0 | 0
   > css_filter_fallback_rewrites | 0 | 0
   > css_filter_parse_failures | 0 | 0
   > css_filter_rewrites_dropped | 0 | 0
   > css_filter_total_bytes_saved | 94586 | 1
   > css_filter_total_original_bytes | 113450969 | 1
   > css_filter_uses | 450867 | 1
   > css_imports_to_links | 0 | 0
   > current_expensive_operations | 0 | 0
   > current_fetch_queue_size | 0 | 0
   > domain_rewrites | 0 | 0
   > downstream_cache_purge_attempts | 3838 | 1
   > file_cache_bytes_freed_in_cleanup | 0 | 0
   > file_cache_cleanups | 0 | 0
   > file_cache_deletes | 0 | 0
   > file_cache_disk_checks | 0 | 0
   > file_cache_evictions | 0 | 0
   > file_cache_hits | 0 | 0
   > file_cache_inserts | 0 | 0
   > file_cache_misses | 0 | 0
   > file_cache_skipped_cleanups | 0 | 0
   > file_cache_started_cleanups | 0 | 0
   > file_cache_write_errors | 0 | 0
   > flatten_imports_charset_mismatch | 0 | 0
   > flatten_imports_complex_queries | 0 | 0
   > flatten_imports_invalid_url | 0 | 0
   > flatten_imports_limit_exceeded | 0 | 0
   > flatten_imports_minify_failed | 0 | 0
   > flatten_imports_recursion | 0 | 0
   > font_service_input_resource_hit | 0 | 0
   > font_service_input_resource_miss | 0 | 0
   > font_service_input_resource_recent_fetch_failure | 0 | 0
   > font_service_input_resource_recent_uncacheable_failure | 0 | 0
   > font_service_input_resource_recent_uncacheable_miss | 0 | 0
   > google_analytics_page_load_count | 0 | 0
   > google_analytics_rewritten_count | 0 | 0
   > html_worker_queue_depth | 0 | 0
   > http_approx_header_bytes_fetched | 9858012 | 1
   > http_bytes_fetched | 605029414 | 1
   > http_fetches | 27058 | 1
   > image_file_count_reduction | 0 | 0
   > image_inline | 9052922 | 1
   > image_norewrites_high_resolution | 88 | 1
   > image_ongoing_rewrites | 0 | 0
   > image_resized_using_rendered_dimensions | 0 | 0
   > image_rewrite_latency_total_ms | 1079050 | 1
   > image_rewrite_total_bytes_saved | 692188535 | 1
   > image_rewrite_total_original_bytes | 1098453869 | 1
   > image_rewrite_uses | 14890738 | 1
   > image_rewrites | 15342 | 1
   > image_rewrites_dropped_decode_failure | 0 | 0
   > image_rewrites_dropped_intentionally | 2981 | 1
   > image_rewrites_dropped_mime_type_unknown | 1616 | 1
   > image_rewrites_dropped_nosaving_noresize | 821 | 1
   > image_rewrites_dropped_nosaving_resize | 456 | 1
   > image_rewrites_dropped_server_write_fail | 0 | 0
   > image_webp_alpha_timeouts | 0 | 0
   > image_webp_conversion_gif_animated_timeouts | 0 | 0
   > image_webp_conversion_gif_timeouts | 0 | 0
   > image_webp_conversion_jpeg_timeouts | 0 | 0
   > image_webp_conversion_png_timeouts | 0 | 0
   > image_webp_opaque_timeouts | 0 | 0
   > image_webp_rewrites | 5370 | 1
   > in_place_oversized_opt_stream | 0 | 0
   > in_place_uncacheable_rewrites | 0 | 0
   > inserted_ga_snippets | 0 | 0
   > instrumentation_filter_script_added_count | 272556 | 1
   > ipro_not_in_cache | 1619291 | 1
   > ipro_not_rewritable | 2382024 | 1
   > ipro_recorder_dropped_due_to_load | 122166 | 1
   > ipro_recorder_dropped_due_to_size | 1 | 1
   > ipro_recorder_failed | 1616819 | 1
   > ipro_recorder_inserted_into_cache | 2468 | 1
   > ipro_recorder_not_cacheable | 33586 | 1
   > ipro_recorder_resources | 1619291 | 1
   > ipro_served | 159357 | 1
   > javascript_blocks_minified | 1001687 | 1
   > javascript_did_not_shrink | 386554 | 1
   > javascript_failed_to_write | 0 | 0
   > javascript_libraries_identified | 0 | 0
   > javascript_minification_disabled | 0 | 0
   > javascript_minification_failures | 182060 | 1
   > javascript_minify_uses | 797346 | 1
   > javascript_reducing_minifications | 797183 | 1
   > javascript_total_bytes_saved | 601286501 | 1
   > javascript_total_original_bytes | 2305755303 | 1
   > js_file_count_reduction | 0 | 0
   > low_priority_worked_queue_depth | 0 | 0
   > lru_cache_deletes | 0 | 0
   > lru_cache_hits | 0 | 0
   > lru_cache_inserts | 0 | 0
   > lru_cache_misses | 0 | 0
   > memcache_error_burst_size | 0 | 0
   > memcache_last_error_checkpoint_ms | 0 | 0
   > memcache_timeouts | 0 | 0
   > memcached_async_deletes | 0 | 0
   > memcached_async_hits | 0 | 0
   > memcached_async_inserts | 0 | 0
   > memcached_async_misses | 0 | 0
   > memcached_blocking_deletes | 0 | 0
   > memcached_blocking_hits | 0 | 0
   > memcached_blocking_inserts | 0 | 0
   > memcached_blocking_misses | 0 | 0
   > named_lock_rewrite_scheduler_locks_held | 0 | 0
   > not_cacheable | 0 | 0
   > num_cache_control_not_rewritable_resources | 20586 | 1
   > num_cache_control_rewritable_resources | 34060 | 1
   > num_conditional_refreshes | 2131 | 1
   > num_css_inlined | 0 | 0
   > num_css_not_used_for_critical_css_computation | 0 | 0
   > num_css_used_for_critical_css_computation | 0 | 0
   > num_deadline_alarm_invocations | 10 | 1
   > num_dedup_inlined_images_candidates_found | 0 | 0
   > num_dedup_inlined_images_candidates_replaced | 0 | 0
   > num_fallback_responses_served | 0 | 0
   > num_fallback_responses_served_while_revalidate | 0 | 0
   > num_flushes | 831325 | 1
   > num_js_inlined | 0 | 0
   > num_local_storage_cache_candidates_added | 0 | 0
   > num_local_storage_cache_candidates_found | 0 | 0
   > num_local_storage_cache_candidates_removed | 0 | 0
   > num_local_storage_cache_stored_css | 0 | 0
   > num_local_storage_cache_stored_images | 0 | 0
   > num_local_storage_cache_stored_total | 0 | 0
   > num_proactively_freshen_user_facing_request | 0 | 0
   > num_resource_fetch_failures | 15876 | 1
   > num_resource_fetch_successes | 6478 | 1
   > num_rewrites_abandoned_for_lock_contention | 2519 | 1
   > page_load_count | 111093 | 1
   > pcache_cohorts_beacon_cohort_deletes | 0 | 0
   > pcache_cohorts_beacon_cohort_hits | 643846 | 1
   > pcache_cohorts_beacon_cohort_inserts | 92601 | 1
   > pcache_cohorts_beacon_cohort_misses | 172069 | 1
   > pcache_cohorts_dependencies_cohort_deletes | 0 | 0
   > pcache_cohorts_dependencies_cohort_hits | 257790 | 1
   > pcache_cohorts_dependencies_cohort_inserts | 169473 | 1
   > pcache_cohorts_dependencies_cohort_misses | 558035 | 1
   > pcache_cohorts_dom_deletes | 0 | 0
   > pcache_cohorts_dom_hits | 750667 | 1
   > pcache_cohorts_dom_inserts | 760324 | 1
   > pcache_cohorts_dom_misses | 65158 | 1
   > popularity_contest_num_rewrites_awaiting_retry | 0 | 0
   > popularity_contest_num_rewrites_running | 0 | 0
   > popularity_contest_queue_size | 0 | 0
   > purge_cancellations | 0 | 0
   > purge_contentions | 0 | 0
   > purge_file_parse_failures | 0 | 0
   > purge_file_stats | 0 | 0
   > purge_file_write_failures | 0 | 0
   > purge_file_writes | 0 | 0
   > purge_index | 0 | 0
   > purge_poll_timestamp_ms | 0 | 0
   > queued_expensive_operations | 0 | 0
   > redis_async_deletes | 0 | 0
   > redis_async_hits | 0 | 0
   > redis_async_inserts | 0 | 0
   > redis_async_misses | 0 | 0
   > redis_blocking_deletes | 0 | 0
   > redis_blocking_hits | 0 | 0
   > redis_blocking_inserts | 0 | 0
   > redis_blocking_misses | 0 | 0
   > redis_cluster_redirections | 0 | 0
   > redis_cluster_slots_fetches | 0 | 0
   > resource_404_count | 3367 | 1
   > resource_fetch_construct_failures | 26 | 1
   > resource_fetch_construct_successes | 58 | 1
   > resource_fetches_cached | 45634 | 1
   > resource_url_domain_acceptances | 47324330 | 1
   > resource_url_domain_rejections | 854756 | 1
   > rewrite_cached_output_hits | 42741964 | 1
   > rewrite_cached_output_missed_deadline | 40747 | 1
   > rewrite_cached_output_misses | 8206401 | 1
   > rewrite_worker_queue_depth | 0 | 0
   > serf_fetch_active_count | 0 | 0
   > serf_fetch_bytes_count | 0 | 0
   > serf_fetch_cancel_count | 0 | 0
   > serf_fetch_cert_errors | 0 | 0
   > serf_fetch_failure_count | 0 | 0
   > serf_fetch_last_check_timestamp_ms | 0 | 0
   > serf_fetch_request_count | 0 | 0
   > serf_fetch_time_duration_ms | 0 | 0
   > serf_fetch_timeout_count | 0 | 0
   > serf_fetch_ultimate_failure | 0 | 0
   > serf_fetch_ultimate_success | 0 | 0
   > shm_cache_deletes | 0 | 0
   > shm_cache_hits | 0 | 0
   > shm_cache_inserts | 0 | 0
   > shm_cache_misses | 0 | 0
   > show_ads_api_replaced_for_async | 0 | 0
   > show_ads_snippets_converted | 0 | 0
   > show_ads_snippets_not_converte | 0 | 0
   > slurp_404_count | 0 | 0
   > statistics_404_count | 0 | 0
   > stdio_fs_outstanding_ops | 0 | 0
   > stdio_fs_slow_ops | 0 | 0
   > stdio_fs_total_ops | 0 | 0
   > successful_downstream_cache_purges | 0 | 0
   > total_page_load_ms | 522503305 | 1
   > url_input_resource_hit | 19275 | 1
   > url_input_resource_miss | 22354 | 1
   > url_input_resource_recent_fetch_failure | 121 | 1
   > url_input_resource_recent_uncacheable_failure | 4589 | 1
   > url_input_resource_recent_uncacheable_miss | 0 | 0
   > url_trim_saved_bytes | 0 | 0
   > url_trims | 0 | 0
   >
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