On 10/2/20 3:24 PM, Mohtashim S wrote:
> I have the below playbook test1.yml that gets istat data for 26 subfolders
> under this directory /var/myfile/pdf.
>
> tasks:
>
> - name: List directories
> raw: "ls -d "/var/myfile/pdf/*/"
> register: subdir
>
> - name: List pid files
> raw: "istat {{ item }}"
> with_items: "{{ subdir.stdout_lines }}"
>
What kind of server / device is that? I would rather use "find" module instead
of "raw".
What does istat actually?
Regards
Racke
> I run the playbook and it takes 29 seconds to complete
>
> time ANSIBLE_SSH_PIPELINING=True ansible-playbook -i=10.9.9.12, -f 30
> test1.yml -vvv
>
> After the playbook completes below is the time taken details output:
>
> Output:
>
> real 0m29.144s user 0m6.206s sys 0m5.618s
>
> I now put the same code with istat task in include_tasks` file like below.
>
> Playbook test2.yml
>
> tasks:
>
> - name: List directories
> raw: "ls -d "/var/myfile/pdf/*/"
> register: subdir
>
> - name: List pid files
> include_tasks: "innertest.yml"
> with_items: "{{ subdir.stdout_lines }}"
>
> cat innertest.yml
>
> - raw: "istat {{ item }}" time ANSIBLE_SSH_PIPELINING=True
> ansible-playbook -i=10.9.9.12, -f 30 test2.yml -vvv
>
> Output:
>
> real 0m59.044s user 0m18.203s sys 0m10.118s
>
> As you can see the time with the same amount of task has more than doubled
> due to include_tasks
>
> In the debug, I also see there are 26 ssh connections triggered for the 26
> sub-directories with_items for the same
> target host 10.9.9.12
>
> I'm not sure of how this works internally but it would have been nice to have
> a single ssh connection for istat for 26
> sub-directories on the same host for performance reasons.
>
> Is there a way to increase the performance for include_tasks and bringing
> down the number of ssh connections to the same
> host ?
>
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