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LSF9 -n- LBI -n- high CPU

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Greg Moeller
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12/3/2007 7:51 PM
    Hi all!!

    We recently updated to LSF9 technology running on a Sol 10 box. We also have LBI running on 3 windows servers in a distributed formation with Tomcat and Oracle database.

    Not sure if this was happening before our implementation of DSSO or if it's new, but our LBI dashboards seem to be refreshing themselves every 60 seconds whether you are doing anything with them or not.

    This is causing very high CPU utilization on our LSF9 box (4 SPARC CPU's and 32 GB RAM) 95% + and the load on the CPU's has increased from hovering around 1-2 to upwards of 60 at times. I'm thinking it's because of our extensive use of LBI and the dashboards re-authenticating all of those users every 60 seconds.

    Has anyone else experienced similar occurrances, and better yet, does anyone know if there is a setting in Tomcat to disable the auto-refresh?

    Thanks much,
    -Greg Moeller
    System Administrator
    Greg Moeller
    Veteran Member
    Posts: 1498
    Veteran Member
    1/10/2008 4:24 PM
      Lawson GSC finally figured out what was causing this high CPU load. Since the last post above, the load had been as high as 200+ at times.
      Well, anyway, I figured I'd post the resolution here in case anyone else was encountering such a problem.

      GSC figured out that it was coming from Lawson's Instant Messaging service that is a part of LBI. We installed it, but we don't use it. What was happening was because of LIM, the dashboards were reloading themselves every 60 seconds. Way too heavy of traffic for us, since we weren't using LIM anyway.

      Turns out there is a setting in ${LBI_HOME}/tomcatx.y/webapps/efs/fs/js/LIM.jsp that controls how often they refresh. I changed the two spots that contained 60000 (ms) to 604800000 and restarted Tomcat. Causing them to quit refreshing every 60 seconds and just refresh about once a week.

      I know it's only been a short while since I did this, but our system load right now is 1.15 -- and I don't think it's been that low (during the day) since we came up on LSF9.