Slow down the Proxy - Proxy Web CPU at 100% - S670 - AsyncOS 7.7.0 flow - 761

We find a flow and CPU issues with our pair of proxies S670.

The two S670s are running AsyncOS 7.7.0 - 761 and their total CPU usage is about 20 to 30%, but the Web Proxy CPU usage shows 100% during the day and about 40% after hours where most people no longer in the office.

Here is an overview of 'status' for a typical day.

Enter "details of the State" for more information.

Status of the: kill Feb 10 11:17:01 CST 2015
Distance from: Thu Dec 11 22:12:41 CST 2014 (60 d 13 h 4 m 19 s)
Use of system resources:
CPU                                    21.8%
RAM                                     0.0%
Reports/Logging disk 24.0%
Transactions per second:
Average in last minute 844
Bandwidth (Mbps):
Average in last minute 86.489
Response time (ms):
Last minute average 296
Connections:
Total number of connections 16055

However, here is the output of proxystat of the same period of time.

Press Ctrl + C to stop.
% reqs proxy client server % bw disk
CPU/sec strike blocks misses kb/s KB/s registered wrs rds
98,00 608 611 2532 2944 66128 57309 13.3 2210 544
98,00 676 498 2617 3645 95540 89996 5.8 2911 567
99.00 777 770 3038 3960 89891 76332 15.1 2948 1093
98,00 710 555 2988 3548 83362 78107 6.3 2567 595
99.00 696 871 2516 3588 81584 71525 12.3 2634 875
99.00 731 850 2958 3500 96219 83045 13.7 2197 917
98,00 700 586 3106 3318 72434 61207 15.5 2024 478
99.00 786 852 3236 3793 107520 93851 12.7 2228 1083

We try to understand what exactly is the cause of the high CPU usage, but everything in that the content being served seems normal.

Our Internet connection is 500 Mbps and between the two S670s we are only able to hit about 300 Mbps.

Down 7.7 as soon as you can...

Seriously.  There are performance issues... they fixed a bunch of them in 8.0...

Tags: Cisco Security

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