Hello！
Our server’s cpu usage has gone from 50% to 90% since we installed a plugin.
I am new to ruby on rails/postgresql. I’m wondering if the plugin’s settings are causing the cpu usage to spike. It is just a points system plugin.
This is the plugin.
I hope someone can help me to see if the database structure and read/write frequency, and the use of message bus are reasonable.
I can pay for the optimization if needed.
It depends on how big your database and vm are. You can share those specs. I haven’t looked at the plugin, but it likely adds some overhead.
Thank you for your attention!
This is our server.
This is size of our db.
UserPoint.create and MessageBus.publish are performed whenever a topic/a post/a like is created.
on(:notification_created) do |notification|
data = JSON.parse(notification.data).with_indifferent_access
badge = Badge.find(data[:badge_id]) if notification.notification_type == Notification.types[:granted_badge]
if badge && badge.badge_grouping_id == 6
user_badge = UserBadge.where(user_id: notification.user_id, badge_id: data[:badge_id]).order(created_at: :desc).first
points = 0
if badge.badge_type_id == BadgeType::Bronze
points = SiteSetting.discourse_rewards_points_for_bronze_badges.to_i
elsif badge.badge_type_id == BadgeType::Silver
points = SiteSetting.discourse_rewards_points_for_silver_badges.to_i
elsif badge.badge_type_id == BadgeType::Gold
points = SiteSetting.discourse_rewards_points_for_gold_badges.to_i
end
description = {
type: 'badge',
badge_id: badge.id,
name: badge.name
}
DiscourseRewards::UserPoint.create(user_id: notification.user_id, user_points_category_id: 1, user_badge_id: user_badge.id, reward_points: points, description: description.to_json) if points > 0
user_message = {
available_points: user_badge.user.available_points
}
MessageBus.publish("/u/#{user_badge.user.id}/rewards", user_message)
end
end
on(:post_created) do |post|
if post.user_id > 0 && post.post_number > 1 && post.topic.archetype != Archetype.private_message
top_posts = Post.where(created_at: Time.zone.now.beginning_of_day..Time.zone.now.end_of_day)
.where(user_id: post.user_id)
.where("post_number > 1")
.order(:created_at)
.limit(SiteSetting.discourse_rewards_daily_top_replies_to_grant_points.to_i)
.pluck(:id) if SiteSetting.discourse_rewards_daily_top_replies_to_grant_points.to_i > 0
if !top_posts || top_posts.include?(post.id)
points = SiteSetting.discourse_rewards_points_for_post_create.to_i
user = User.find(post.user_id)
description = {
type: 'post',
post_id: post.id,
post_number: post.post_number,
topic_slug: post.topic.slug,
topic_id: post.topic.id,
topic_title: post.topic.title
}
DiscourseRewards::UserPoint.create(user_id: post.user_id, user_points_category_id: 4, reward_points: points, description: description.to_json) if points > 0
user_message = {
available_points: post.user.available_points,
points: post.user.total_earned_points
}
MessageBus.publish("/u/#{post.user_id}/rewards", user_message)
end
end
end
on(:topic_created) do |topic|
if topic.user_id > 0 && topic.archetype != Archetype.private_message
top_topics = Topic.where(created_at: Time.zone.now.beginning_of_day..Time.zone.now.end_of_day)
.where(user_id: topic.user_id)
.order(:created_at)
.limit(SiteSetting.discourse_rewards_daily_top_topics_to_grant_points.to_i)
.pluck(:id) if SiteSetting.discourse_rewards_daily_top_topics_to_grant_points.to_i > 0
if !top_topics || top_topics.include?(topic.id)
points = topic.category.custom_fields['rewards_points_for_topic_create'].to_i
points = SiteSetting.discourse_rewards_points_for_topic_create.to_i if points <= 0
user = User.find(topic.user_id)
description = {
type: 'topic',
post_number: 1,
topic_slug: topic.slug,
topic_id: topic.id,
topic_title: topic.title
}
DiscourseRewards::UserPoint.create(user_id: topic.user_id, user_points_category_id: 4, reward_points: points, description: description.to_json) if points > 0
user_message = {
available_points: topic.user.available_points
}
MessageBus.publish("/u/#{topic.user_id}/rewards", user_message)
end
end
end
on(:like_created) do |like|
points = SiteSetting.discourse_rewards_points_for_like_received.to_i
post = Post.find(like.post_id)
user = post.user
if user.id > 0
top_likes = PostAction.where(post_action_type_id: PostActionType.types[:like])
.where(post_id: Post.where(user_id: user.id), created_at: Time.zone.now.beginning_of_day..Time.zone.now.end_of_day)
.order(:created_at)
.limit(SiteSetting.discourse_rewards_daily_top_like_received_to_grant_points.to_i)
.pluck(:id) if SiteSetting.discourse_rewards_daily_top_like_received_to_grant_points.to_i > 0
if !top_likes || top_likes.include?(like.id)
description = {
type: 'like',
post_id: post.id,
post_number: post.post_number,
topic_id: post.topic.id,
topic_slug: post.topic.slug,
topic_title: post.topic.title
}
DiscourseRewards::UserPoint.create(user_id: user.id, user_points_category_id: 4, reward_points: points, description: description.to_json) if points > 0
user_message = {
available_points: user.available_points
}
MessageBus.publish("/u/#{user.id}/rewards", user_message)
end
end
end
And message bus xhr always failed.
A plugin like that, that performs several databases lookups, reads and writes, whenever a common action like a post and likes happen will indeed increase your server load, and in your case may prompt you do increase your server instance resources in order to accommodate it.