CSS11501 slow HTTP HEAD requests

Unanswered Question
May 29th, 2012

Hi,

First post, so bear with me.

I have a 11501, which is connected via it's Gigabit port to a Nexus 5010 switch. This in turn services hosts which have two VM's, set up as web application servers.

Config is as follows:

!*************************** GLOBAL ***************************
  sntp primary-server-poll-interval 90
  sntp primary-server 129.6.15.28 version 3
  sntp secondary-server 129.6.15.29 version 3
  sntp secondary-server-poll-interval 90

  dns secondary 172.27.4.11
  dns primary 172.27.4.23
  dns suffix <xxxx.xxx.xxx>

  ip route 0.0.0.0 0.0.0.0 172.27.64.1 1

!************************* INTERFACE *************************
interface e9
  bridge vlan 64

!************************** CIRCUIT **************************
circuit VLAN64

  ip address 172.27.64.201 255.255.255.0
    no redirects

!************************** SERVICE **************************
service APP01
  ip address 172.27.64.187
  keepalive type http
  protocol tcp
  port 5000
  keepalive uri "/web/path"
  active

service APP02
  ip address 172.27.64.188
  protocol tcp
  port 5000
  keepalive uri "/web/path"
  keepalive type http
  active

!*************************** OWNER ***************************
owner HA
  email-address <ommitted>
  content XX_Content
    vip address 172.27.64.202
    port 5000
    protocol tcp
    url "//ha.company.com:5000/*"
    add service APP01
    add service APP02
    balance leastconn
    active

!*************************** GROUP ***************************
group NAT_Grp
  add destination service APP01
  add destination service APP02
  vip address 172.27.64.202
  active

!**************************** ACL ****************************
acl 90
  clause 2 permit any any destination any
  clause 1 permit any any destination 172.27.64.202 sourcegroup NAT_Grp
  apply circuit-(VLAN64)

                  

Whilst the URL of http://ha.company.com:5000/path works, it is painfully slow. Removing the NLB proves the app servers aren't the issue. Pages come up as they should.

Duplex on the ethernet port is gigabit-FD-sym-asym

Does anyone perhaps have any suggestions, please?

Thanks,

Chris

I have this problem too.
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Cesar Roque Tue, 05/29/2012 - 16:11

Hi Chris,

What is the version running on the CSS???

Please send a showtech of the CSS.

Do you have simultaneous captures on both sides of the CSS showing this behavior?  It could be a TCP windows scale issue but we need to see the captures to confirm this.

------------------------------------

Cesar R

Cesar Roque Thu, 05/31/2012 - 10:29

Hi Chris,

Can you get a capture in a PC while you sent some requests to the VIP address?

admin@mxi.com Thu, 05/31/2012 - 10:40

I'm actually getting nothing but malformed packets in the capture (just trying to upload it now)

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Posted May 29, 2012 at 12:45 PM
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