Settings for both the host and guest were more than the recommended settings of the app maker.
Actually there was lots of available memory and cpu utilization was below 10% when the app behaved badly. The vendor is claiming that they ran the same VM image on a VMWare ESX host without problem. I only have their word on this though. Zak Elep <[email protected]> wrote: >On Tue, Jul 2, 2013 at 9:47 AM, Michael Tinsay <[email protected]> wrote: >> I have this baffling situation... Our consultants are installing their very >> expensive piece of Java app running under Tomcat and RHEL 6. The whole >> thing is in a VM guest. Here's the thing, their app segfaults if the VM is >> a KVM guest running under a RHEL 6 host (and even an Ubuntu 12.04 host). >> They claim (I wasn't there personally) that their product runs ok for the >> same VM guest image running under VMWare ESX. >> >> Has anybody run into a similar situation? Is there a techincal explanation >> of why a Java app would segfault if the VM host is KVM as against an ESX >> host? > >My wild guess: Java memory ballooning differently in KVM versus ESX. >You might have to tune the KVM memory ballooning in your VM (I'm >guessing you're using libvirt, right, given that you're on RHEL?) > >Also, check the other obvious suspects (e.g. Tomcat memory settings, >badly-set OS sysctls, open file limits and the like.) > > >Cheers, > >Zakame > >-- >Zak B. Elep || zakame.net >1486 7957 454D E529 E4F1 F75E 5787 B1FD FA53 851D _________________________________________________ Philippine Linux Users' Group (PLUG) Mailing List http://lists.linux.org.ph/mailman/listinfo/plug Searchable Archives: http://archives.free.net.ph
