Cpu Usage cozsftp

A discussion of Co:Z sftp, a port of OpenSSH sftp for z/OS
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cagatayucuzal
Posts: 40
Joined: Thu Jun 01, 2017 9:15 am

Cpu Usage cozsftp

Post by cagatayucuzal » Thu Jan 18, 2018 5:45 am

What is your advice about cpu tunning for sftp?

There are some high cpu usage about our sftp jobs

are there any suggestion for tunning cpu?

Regards

cagatayucuzal
Posts: 40
Joined: Thu Jun 01, 2017 9:15 am

Re: Cpu Usage cozsftp

Post by cagatayucuzal » Thu Jan 18, 2018 8:39 am

Actually,Our production system cpu e CPU is increasing suddenly(like a peek)
when upto 20 sftp jobs running same time
Do you have any comment?

dovetail
Site Admin
Posts: 1907
Joined: Thu Jul 29, 2004 12:12 pm

Re: Cpu Usage cozsftp

Post by dovetail » Thu Jan 18, 2018 11:35 am

Co:Z SFTP itself doesn't use much CPU, but it uses IBM OpenSSH which does use a lot of CPU.
You can reduce the CPU of IBM OpenSSH dramatically by using z Architecture CPACF accelerated cipher and mac algorithms, since this is where the large majority of the CPU is consumed.

See one of our "OpenSSH Quick Install Guides" (depending on the version of IBM z/OS OpenSSH that you are using) for detailed tuning information:

https://dovetail.com/docs/coz/coz_index.html

Note: Co:Z Gold Enterprise License and Support customers receive at no charge our "Co:Z SFTP Up and Running" service where we work with your technical team to configure, tune, and verify IBM OpenSSH.

See: https://dovetail.com/support.html

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