我在一个小型 amazon linux 实例上安装了locomotivecms应用程序。我运行以下来预编译资产：
bundle exec rake assets:precompile
已经有半个小时了，资产仍在预编译中。以下是我目前在终端上的内容：
[ec2-user@domU-12-31-39-09-15-88 locomotivecms]$ bundle exec rake assets:precompile
/home/ec2-user/.rvm/rubies/ruby-1.9.3-p448/bin/ruby /home/ec2-user/.rvm/gems/ruby-1.9.3-p448/bin/rake assets:precompile:all RAILS_ENV=production RAILS_GROUPS=assets
which: no convert in (/home/ec2-user/.rvm/gems/ruby-1.9.3-p448/bin:/home/ec2-user/.rvm/gems/ruby-1.9.3-p448@global/bin:/home/ec2-user/.rvm/rubies/ruby-1.9.3-p448/bin:/home/ec2-user/.rvm/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/opt/aws/bin:/home/ec2-user/bin)
which: no identify in (/home/ec2-user/.rvm/gems/ruby-1.9.3-p448/bin:/home/ec2-user/.rvm/gems/ruby-1.9.3-p448@global/bin:/home/ec2-user/.rvm/rubies/ruby-1.9.3-p448/bin:/home/ec2-user/.rvm/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/opt/aws/bin:/home/ec2-user/bin)
mkdir -p /home/ec2-user/locomotivecms/public/assets
cp -rp /home/ec2-user/.rvm/gems/ruby-1.9.3-p448/gems/locomotive-tinymce-rails-3.5.8.2/vendor/assets/javascripts/tinymce /home/ec2-user/locomotivecms/public/assets
mkdir -p /home/ec2-user/locomotivecms/public/assets
cp -rp /home/ec2-user/.rvm/gems/ruby-1.9.3-p448/gems/locomotive-aloha-rails-0.23.2.2/vendor/assets/javascripts/aloha /home/ec2-user/locomotivecms/public/assets
which: no convert in (/home/ec2-user/.rvm/gems/ruby-1.9.3-p448/bin:/home/ec2-user/.rvm/gems/ruby-1.9.3-p448@global/bin:/home/ec2-user/.rvm/rubies/ruby-1.9.3-p448/bin:/home/ec2-user/.rvm/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/opt/aws/bin:/home/ec2-user/bin)
which: no identify in (/home/ec2-user/.rvm/gems/ruby-1.9.3-p448/bin:/home/ec2-user/.rvm/gems/ruby-1.9.3-p448@global/bin:/home/ec2-user/.rvm/rubies/ruby-1.9.3-p448/bin:/home/ec2-user/.rvm/bin:/usr/local/bin:/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/sbin:/opt/aws/bin:/home/ec2-user/bin)
which 命令是否意味着花费时间为每个正在预编译的文件查找 rake 可执行文件？