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Cisco Element Manager System

Field Notice: FN - 17500 - Solaris 8 Problem Results in Performance Degradation for Cisco EMF v3.2 Patch 1


Updated February 12, 2002

January 18, 2002


NOTICE:

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.

Products Affected

Product

Comments

Cisco EMF v3.2 patch 1

Cisco EMF v3.2 can only be run with patch 1 installed

Problem Description

Cisco has found a Solaris related performance issue that impacts the overall performance of Cisco Element Management Framework (EMF) Version 3.2 Patch 1. Element Management Systems (EMSs) running on Solaris 8. A bug in the Solaris 8 virtual memory management results in a significant performance degradation when running Solaris 2.6 applications in compatibility mode. Sun Microsystems, Inc. is currently working on a patch for this problem.

Problem Symptoms

Performance testing on Solaris 8 indicates slowdowns during action executions. Results were collected for Solaris 8 and Solaris 2.6 systems, and the execution times were compared.

Action

Solaris 2.6 Time

Solaris 8 Time

Difference

CEMF Start 1st time (initialise)

1312 seconds

1930 seconds

-618 seconds

AutoDiscover 1 GSR Chassis

11 seconds

14 seconds

-3 seconds

Commission 1 GSR Chassis

36 seconds

71 seconds

-35 seconds

time to sync/upload 250 VCL's

85 seconds

134 seconds

-49 seconds

Re-sync

34 seconds

125 seconds

-91 seconds

Delete chassis (required decomm 1st)

13 seconds

23 seconds

-10 seconds

Greater detail can be obtained through xddts CSCdw16519.

Workaround/Solution

Sun Microsystems, Inc. has recommended the following workaround.

To avoid any degradation in performance when Cisco EMF v3.2 patch 1 is used on Solaris 8, the superuser (root) must edit the /etc/system file as follows:

  1. Log in as root, or use the su command to become root.

  2. Add a line that reads set free_pages = 0 to the /etc/system file.

    Note: This line can be added anywhere in the /etc/system file.

  3. Reboot the system using the reboot -- -r command.

    Note: This change forces Solaris 8 to use the memory management model used in Solaris 2.6, avoiding the performance issue bug. Sun Microsystems, Inc. will resolve this bug in the next kernel patch.

DDTS

To follow the bug ID link below and see detailed bug information, you must be a registered user and you must be logged in.

DDTS

Description

CSCdw16519

Solaris 8 Performance Degradation

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For More Information

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