我需要检查我的rails应用程序的性能。我安装了newrelic_rpm。 在environment.rb中，添加了以下内容：
config.gem "newrelic_rpm"
然后，在浏览器中我给了：
http://localhost:3000/newrelic
然后，它显示错误消息如下：
路由错误没有路由匹配＆＃34; / newrelic＆＃34;使用{：method =＆gt;：get}
你能帮我解决这个问题吗？
提前致谢...
答案 0 :(得分：15)
我猜我的问题与通过工头在开发中运行瘦（和其他进程）有关。我添加了以下内容以使路由和监视工作：
config/environments/development.rb
require 'new_relic/rack/developer_mode'
config.middleware.use NewRelic::Rack::DeveloperMode
ENV['NEWRELIC_ENABLE'] = 'true'
设置ENV['NEWRELIC_ENABLE'] = 'true'可能会监视某些内容，而您却不愿意（搜索任务等等）
答案 1 :(得分：4)
答案 2 :(得分：2)
从newrelic_rpm 2.13.4升级后，我在Rails 3.0.5上遇到了同样的问题 - ＆gt; 2.14.0
我从这里得到的信息：
http://support.newrelic.com/discussions/support/5547-cant-access-developer-mode
...我在文件$RAILS_ROOT/config.ru文件
require 'new_relic/rack_app' use NewRelic::Rack::DeveloperMode
我希望在newpreic_rpm
的更高版本中修复此问题我还注意到应该在newrelic.yaml目录中的config文件格式发生了变化。您可以在创建帐户后从新帐户主页（帐户＆gt; deploy＆gt; ruby）下载此帐户（有基本免费版本）。
基本上，它看起来像：
common: &default_settings
license_key: '[ Your unique license key ]'
app_name: My Application
# When "true", the agent collects performance data about your
# application and reports this data to the NewRelic RPM service at
# newrelic.com. This global switch is normally overridden for each
# environment below. (formerly called 'enabled')
monitor_mode: true
# Developer mode should be off in every environment but
# development as it has very high overhead in memory.
developer_mode: false
# The newrelic agent generates its own log file to keep its logging
# information separate from that of your application. Specify its
# log level here.
log_level: info
# The newrelic agent communicates with the RPM service via http by
# default. If you want to communicate via https to increase
# security, then turn on SSL by setting this value to true. Note,
# this will result in increased CPU overhead to perform the
# encryption involved in SSL communication, but this work is done
# asynchronously to the threads that process your application code,
# so it should not impact response times.
ssl: false
# EXPERIMENTAL: enable verification of the SSL certificate sent by
# the server. This setting has no effect unless SSL is enabled
# above. This may block your application. Only enable it if the data
# you send us needs end-to-end verified certificates.
#
# This means we cannot cache the DNS lookup, so each request to the
# RPM service will perform a lookup. It also means that we cannot
# use a non-blocking lookup, so in a worst case, if you have DNS
# problems, your app may block indefinitely.
# verify_certificate: true
# Set your application's Apdex threshold value with the 'apdex_t'
# setting, in seconds. The apdex_t value determines the buckets used
# to compute your overall Apdex score.
# Requests that take less than apdex_t seconds to process will be
# classified as Satisfying transactions; more than apdex_t seconds
# as Tolerating transactions; and more than four times the apdex_t
# value as Frustrating transactions.
# For more about the Apdex standard, see
# http://support.newrelic.com/faqs/general/apdex
apdex_t: 0.5
# Proxy settings for connecting to the RPM server.
#
# If a proxy is used, the host setting is required. Other settings
# are optional. Default port is 8080.
#
# proxy_host: hostname
# proxy_port: 8080
# proxy_user:
# proxy_pass:
# Tells transaction tracer and error collector (when enabled)
# whether or not to capture HTTP params. When true, frameworks can
# exclude HTTP parameters from being captured.
# Rails: the RoR filter_parameter_logging excludes parameters
# Java: create a config setting called "ignored_params" and set it to
# a comma separated list of HTTP parameter names.
# ex: ignored_params: credit_card, ssn, password
capture_params: false
# Transaction tracer captures deep information about slow
# transactions and sends this to the RPM service once a
# minute. Included in the transaction is the exact call sequence of
# the transactions including any SQL statements issued.
transaction_tracer:
# Transaction tracer is enabled by default. Set this to false to
# turn it off. This feature is only available at the Silver and
# above product levels.
enabled: true
# Threshold in seconds for when to collect a transaction
# trace. When the response time of a controller action exceeds
# this threshold, a transaction trace will be recorded and sent to
# RPM. Valid values are any float value, or (default) "apdex_f",
# which will use the threshold for an dissatisfying Apdex
# controller action - four times the Apdex T value.
transaction_threshold: apdex_f
# When transaction tracer is on, SQL statements can optionally be
# recorded. The recorder has three modes, "off" which sends no
# SQL, "raw" which sends the SQL statement in its original form,
# and "obfuscated", which strips out numeric and string literals
record_sql: obfuscated
# Threshold in seconds for when to collect stack trace for a SQL
# call. In other words, when SQL statements exceed this threshold,
# then capture and send to RPM the current stack trace. This is
# helpful for pinpointing where long SQL calls originate from
stack_trace_threshold: 0.500
# Determines whether the agent will capture query plans for slow
# SQL queries. Only supported in mysql and postgres. Should be
# set to false when using other adapters.
# explain_enabled: true
# Threshold for query execution time below which query plans will not
# not be captured. Relevant only when `explain_enabled` is true.
# explain_threshold: 0.5
# Error collector captures information about uncaught exceptions and
# sends them to RPM for viewing
error_collector:
# Error collector is enabled by default. Set this to false to turn
# it off. This feature is only available at the Silver and above
# product levels
enabled: true
# Rails Only - tells error collector whether or not to capture a
# source snippet around the place of the error when errors are View
# related.
capture_source: true
# To stop specific errors from reporting to RPM, set this property
# to comma separated values. Default is to ignore routing errors
# which are how 404's get triggered.
#
ignore_errors: ActionController::RoutingError
# (Advanced) Uncomment this to ensure the cpu and memory samplers
# won't run. Useful when you are using the agent to monitor an
# external resource
# disable_samplers: true
# If you aren't interested in visibility in these areas, you can
# disable the instrumentation to reduce overhead.
#
# disable_view_instrumentation: true
# disable_activerecord_instrumentation: true
# disable_memcache_instrumentation: true
# disable_dj: true
# Certain types of instrumentation such as GC stats will not work if
# you are running multi-threaded. Please let us know.
# multi_threaded = false
# Application Environments
# ------------------------------------------
# Environment specific settings are in this section.
# For Rails applications, RAILS_ENV is used to determine the environment
# For Java applications, pass -Dnewrelic.environment <environment> to set
# the environment
# NOTE if your application has other named environments, you should
# provide newrelic configuration settings for these environments here.
development:
<<: *default_settings
# Turn off communication to RPM service in development mode (also
# 'enabled').
# NOTE: for initial evaluation purposes, you may want to temporarily
# turn the agent on in development mode.
monitor_mode: false
# Rails Only - when running in Developer Mode, the New Relic Agent will
# present performance information on the last 100 transactions you have
# executed since starting the mongrel.
# NOTE: There is substantial overhead when running in developer mode.
# Do not use for production or load testing.
developer_mode: true
# Enable textmate links
# textmate: true
test:
<<: *default_settings
# It almost never makes sense to turn on the agent when running
# unit, functional or integration tests or the like.
monitor_mode: false
# Turn on the agent in production for 24x7 monitoring. NewRelic
# testing shows an average performance impact of < 5 ms per
# transaction, you you can leave this on all the time without
# incurring any user-visible performance degradation.
production:
<<: *default_settings
monitor_mode: true
# Many applications have a staging environment which behaves
# identically to production. Support for that environment is provided
# here. By default, the staging environment has the agent turned on.
staging:
<<: *default_settings
monitor_mode: true
app_name: My Application (Staging)
common: &default_settings
license_key: '[ Your unique license key ]'
app_name: My Application
# When "true", the agent collects performance data about your
# application and reports this data to the NewRelic RPM service at
# newrelic.com. This global switch is normally overridden for each
# environment below. (formerly called 'enabled')
monitor_mode: true
# Developer mode should be off in every environment but
# development as it has very high overhead in memory.
developer_mode: false
# The newrelic agent generates its own log file to keep its logging
# information separate from that of your application. Specify its
# log level here.
log_level: info
# The newrelic agent communicates with the RPM service via http by
# default. If you want to communicate via https to increase
# security, then turn on SSL by setting this value to true. Note,
# this will result in increased CPU overhead to perform the
# encryption involved in SSL communication, but this work is done
# asynchronously to the threads that process your application code,
# so it should not impact response times.
ssl: false
# EXPERIMENTAL: enable verification of the SSL certificate sent by
# the server. This setting has no effect unless SSL is enabled
# above. This may block your application. Only enable it if the data
# you send us needs end-to-end verified certificates.
#
# This means we cannot cache the DNS lookup, so each request to the
# RPM service will perform a lookup. It also means that we cannot
# use a non-blocking lookup, so in a worst case, if you have DNS
# problems, your app may block indefinitely.
# verify_certificate: true
# Set your application's Apdex threshold value with the 'apdex_t'
# setting, in seconds. The apdex_t value determines the buckets used
# to compute your overall Apdex score.
# Requests that take less than apdex_t seconds to process will be
# classified as Satisfying transactions; more than apdex_t seconds
# as Tolerating transactions; and more than four times the apdex_t
# value as Frustrating transactions.
# For more about the Apdex standard, see
# http://support.newrelic.com/faqs/general/apdex
apdex_t: 0.5
# Proxy settings for connecting to the RPM server.
#
# If a proxy is used, the host setting is required. Other settings
# are optional. Default port is 8080.
#
# proxy_host: hostname
# proxy_port: 8080
# proxy_user:
# proxy_pass:
# Tells transaction tracer and error collector (when enabled)
# whether or not to capture HTTP params. When true, frameworks can
# exclude HTTP parameters from being captured.
# Rails: the RoR filter_parameter_logging excludes parameters
# Java: create a config setting called "ignored_params" and set it to
# a comma separated list of HTTP parameter names.
# ex: ignored_params: credit_card, ssn, password
capture_params: false
# Transaction tracer captures deep information about slow
# transactions and sends this to the RPM service once a
# minute. Included in the transaction is the exact call sequence of
# the transactions including any SQL statements issued.
transaction_tracer:
# Transaction tracer is enabled by default. Set this to false to
# turn it off. This feature is only available at the Silver and
# above product levels.
enabled: true
# Threshold in seconds for when to collect a transaction
# trace. When the response time of a controller action exceeds
# this threshold, a transaction trace will be recorded and sent to
# RPM. Valid values are any float value, or (default) "apdex_f",
# which will use the threshold for an dissatisfying Apdex
# controller action - four times the Apdex T value.
transaction_threshold: apdex_f
# When transaction tracer is on, SQL statements can optionally be
# recorded. The recorder has three modes, "off" which sends no
# SQL, "raw" which sends the SQL statement in its original form,
# and "obfuscated", which strips out numeric and string literals
record_sql: obfuscated
# Threshold in seconds for when to collect stack trace for a SQL
# call. In other words, when SQL statements exceed this threshold,
# then capture and send to RPM the current stack trace. This is
# helpful for pinpointing where long SQL calls originate from
stack_trace_threshold: 0.500
# Determines whether the agent will capture query plans for slow
# SQL queries. Only supported in mysql and postgres. Should be
# set to false when using other adapters.
# explain_enabled: true
# Threshold for query execution time below which query plans will not
# not be captured. Relevant only when `explain_enabled` is true.
# explain_threshold: 0.5
# Error collector captures information about uncaught exceptions and
# sends them to RPM for viewing
error_collector:
# Error collector is enabled by default. Set this to false to turn
# it off. This feature is only available at the Silver and above
# product levels
enabled: true
# Rails Only - tells error collector whether or not to capture a
# source snippet around the place of the error when errors are View
# related.
capture_source: true
# To stop specific errors from reporting to RPM, set this property
# to comma separated values. Default is to ignore routing errors
# which are how 404's get triggered.
#
ignore_errors: ActionController::RoutingError
# (Advanced) Uncomment this to ensure the cpu and memory samplers
# won't run. Useful when you are using the agent to monitor an
# external resource
# disable_samplers: true
# If you aren't interested in visibility in these areas, you can
# disable the instrumentation to reduce overhead.
#
# disable_view_instrumentation: true
# disable_activerecord_instrumentation: true
# disable_memcache_instrumentation: true
# disable_dj: true
# Certain types of instrumentation such as GC stats will not work if
# you are running multi-threaded. Please let us know.
# multi_threaded = false
# Application Environments
# ------------------------------------------
# Environment specific settings are in this section.
# For Rails applications, RAILS_ENV is used to determine the environment
# For Java applications, pass -Dnewrelic.environment <environment> to set
# the environment
# NOTE if your application has other named environments, you should
# provide newrelic configuration settings for these environments here.
development:
<<: *default_settings
# Turn off communication to RPM service in development mode (also
# 'enabled').
# NOTE: for initial evaluation purposes, you may want to temporarily
# turn the agent on in development mode.
monitor_mode: false
# Rails Only - when running in Developer Mode, the New Relic Agent will
# present performance information on the last 100 transactions you have
# executed since starting the mongrel.
# NOTE: There is substantial overhead when running in developer mode.
# Do not use for production or load testing.
developer_mode: true
# Enable textmate links
# textmate: true
test:
<<: *default_settings
# It almost never makes sense to turn on the agent when running
# unit, functional or integration tests or the like.
monitor_mode: false
# Turn on the agent in production for 24x7 monitoring. NewRelic
# testing shows an average performance impact of < 5 ms per
# transaction, you you can leave this on all the time without
# incurring any user-visible performance degradation.
production:
<<: *default_settings
monitor_mode: true
# Many applications have a staging environment which behaves
# identically to production. Support for that environment is provided
# here. By default, the staging environment has the agent turned on.
staging:
<<: *default_settings
monitor_mode: true
app_name: My Application (Staging)