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We have a load balancer (Centos 5.2 + heartbeat + ldirectord) with 800
virtual services. It directs traffic to a farm of tomcat servers, MySQL
database servers, Windows terminal servers, and FTP servers.
The load balancer computer in question is a 2 x dual-core Xeon 2.4GHz
box with only 1GB RAM, but it is not working hard. CPU utilization is
consistently below 25%.
Recently we have started receiving complaints from a small subset of
users who are experiecing application freezes when retrieving files via
FTP. It appears that what these users have in common is that they are
using passive FTP.
Is possible that LVS might have problems with passive FTP when there are
a lot of simultaneous connections to track?
--
Eric Robinson
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