An early foray into file encryption showed this behavior, IIRC. Some enciphering algorithms are said to be really heavy CPU hitters.
If you are encrypting then you need to be careful with compression. Encrypted data is said to be generally not compressible. -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Kelman, Tom Sent: Friday, May 02, 2008 10:53 AM To: IBM-MAIN@BAMA.UA.EDU Subject: Connect:Direct (NDM) CPU Usage We run Connect:Direct (used to be called NDM) from Sterling Commerce. Yesterday afternoon the started task, CDNDM, took from 50-60% of an engine on our z9BC for almost 2 hours while it transferred a large file. This caused us to hit our softcap and affected other tasks in the system. We have the CDNDM task running in our STCLO service class which is set for Vel=50 and an importance level of 4. It was still running at a high DP and grabbed the CPU. I can't understand why a task that is basically transmitting a file over the network should need this much CPU. My only explanation might be that it is compressing the data before putting it on the network and the compression algorithm isn't the most efficient in the world. Has anyone else had this kind of a problem running Connect:Direct? What, if anything, did you do to control it? Tom Kelman Commerce Bank of Kansas City (816) 760-7632 ************************************************************************ ***** If you wish to communicate securely with Commerce Bank and its affiliates, you must log into your account under Online Services at http://www.commercebank.com or use the Commerce Bank Secure Email Message Center at https://securemail.commercebank.com NOTICE: This electronic mail message and any attached files are confidential. The information is exclusively for the use of the individual or entity intended as the recipient. If you are not the intended recipient, any use, copying, printing, reviewing, retention, disclosure, distribution or forwarding of the message or any attached file is not authorized and is strictly prohibited. If you have received this electronic mail message in error, please advise the sender by reply electronic mail immediately and permanently delete the original transmission, any attachments and any copies of this message from your computer system. ************************************************************************ ***** ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html NOTICE: This electronic mail message and any files transmitted with it are intended exclusively for the individual or entity to which it is addressed. The message, together with any attachment, may contain confidential and/or privileged information. Any unauthorized review, use, printing, saving, copying, disclosure or distribution is strictly prohibited. If you have received this message in error, please immediately advise the sender by reply email and delete all copies. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
