[Varnish] #1306: reg: varnish cache hits taking longer duration

Varnish varnish-bugs at varnish-cache.org
Fri May 17 10:49:40 CEST 2013

#1306: reg: varnish cache hits taking longer duration
 Reporter:  sugunakar  |       Type:  defect
   Status:  new        |   Priority:  highest
Milestone:             |  Component:  build
  Version:  2.1.4      |   Severity:  normal
 Keywords:             |

 we have been using varnish for the past few years.

 Recently I observed that few requests are taking longer than expected.
 I am hitting my website say www.abc.com.

 OS: CentOS 5.8
 Linux kernel:  2.6
 Varnish version: 2.1.4-1

 here is the summary of my test:
 1. Send requests one by one to www.abc.com using curl
 2. Measure the time using curl utility
 3. Total requests sent 2000 ; time taken to send them 30-40 seconds
 4. Observartions: most of requests get served within 0.3 seconds and few
 take more than 1 seconds and 2-3 requests take up more than 3 seconds
 5. The requests taking 3 seconds are served from cache as I could see the
 X-varnish headers with 2 numbers.

 Need your help in understanding why it takes 3 seconds to serve from


Ticket URL: <https://www.varnish-cache.org/trac/ticket/1306>
Varnish <https://varnish-cache.org/>
The Varnish HTTP Accelerator

More information about the varnish-bugs mailing list