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  1. #1
    Join Date
    May 2004
    Corona, CA USA

    Varnish Performance Stats and Tips Thread

    I thought it might be useful for members running the Varnish content accelerator WHM plugin currently under development by UNIXy to have a thread where we can compare notes and exchange tips about using Varnish and the occasional tweak to a customer site to optimize the way it works with Varnish.

    The two busiest domains on my main server are a world famous blog and a popular SMF discussion forum. On the day I installed Varnish the blog had just brought on new staff and merged in a Swedish site so the server load was higher than usual, running 2 to 3 in top.

    I saw my load drop and the sites speed up literally the instant that Varnish was installed and running. Now my load average is just under 1 most of the time and the improvement in page load times is undeniable.

    Varnish Memory Usage:

    332792 Bytes

    Varnish Stats:

    client_drop: 0
    cache_hit: 1105002
    cache_miss: 592169
    backend_unhealthy: 0
    backend_busy: 0
    backend_fail: 0

    It seems like cache hits vs cache misses stay very close to 2:1 every time I look at it.

    I've told Varnish it may use 1GB of my 8GB RAM and the TTL is set to 20 seconds.

    How are you doing with Varnish?
    Skeptic Hosting
    Promoting a reality-based lifestyle choice
    Hosting by invitation only, nothing for sale

  2. #2
    I'm using varnish aswell. My ratio looks better tho, 2:1 seems a bit low imo.

    Varnish stats:
    Client connections accepted: 107598843
    Client requests received: 376316924
    Cache hits: 275389948
    Cache hits for pass: 543312
    Cache misses: 1575062
    Total header bytes: 144513636701
    Total body bytes: 3263270821854
    SMA bytes allocated: 11208698994587
    SMA bytes free: 11208492703914
    Client uptime: 1077631
    Last edited by wizzi; 02-16-2011 at 09:41 PM. Reason: typo

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