Am 13.08.2011 19:57, schrieb Paul J Stevens:
> Also, I'm not at all familiar with IO performance on VMWare, but on Xen IO > really lags > behind bare-iron databases. And thats no joke. On Xen hosts running mysql-5.5 > I need > to keep thread-concurrency at 1 (read: one) to keep throughput at acceptable > levels > with IMAP concurrencies around 50-100 connections, POP3 around 10-20, with an > added > 5 LMTP connections for insertions we have our whole business running on VMware ESXi there is no difference between VMware-Guest and bare-iron one of our dbmail-machines is running currently even on VMware-Workstation on a CentOS 5.5 Host, working wonderful, i had only a real perfomrance problem with a CentOS geust on this machine while Fedora is running smootly, maybe there is some problem depending on the host-guest-combination which even VMware-Support can not explain, running the same image on a Fedora-Host no problems conclusion: normally there is no problem with VMware, but for business i would strongly recommend ESXi instead of workstation on certified hardware (HP ProLiant in our environment), running the whole company on this since 2008 without any issue and i am speeking about webservers, dbmail, fileservers with samba and netatalk, barracuda spamfirewall as virtual appliance... most of the guests are runnign smoother than on bare metal especially boot-times
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