After logstash restart, it takes about 10 minutes to encrypt the first message

[AndrewPanB]

Problems: As title. Cipher is as follow:
cipher {
mode => "encrypt"
algorithm => "des-cbc"
iv_random_length => 8
key => "@CIPHER_KEY_TOKEN@"
source => "data"
target => "data"
#enable_metric => false
}

[jsvd]

I can't seem to replicate this locally. Can you specify which operating system, hardware, and logstash version you're running?

Can you take a thread dump during those 10 minutes to see what's happening?
You can do this in multiple ways, for example jstack -l pid > thread_dump.txt