don't expect you web servers to have an equal number of processes. even if your servers have an equal number of connections at any given time, the load on each machine (identical, i assume) depends on the size of the transaction for each clients. you might be expecting an outcome similar to a DNS round-robin but active load-balancers checks from system-health (via response time, etc.) when distributing load.
you should consider adding web-proxy service such as memcache to reduce the load of your web servers. On Wed, Apr 23, 2008 at 8:13 AM, Sir June <[EMAIL PROTECTED]> wrote: > Hi, > in my previous thread x509, i mentioned i have 3 linux boxes with a load > balancer in their front-end. They all serve www.mydomain.com through the > VIP interface of the load balancer switch. My impression is that the load > balancer should distribute the load traffic among the 3 servers, right? > > checking the daily apache/error_log file of each server showed me these > logs at a certain point in time. > > linux1: > [info] server seems busy, (you may need to increase StartServers, or > Min/MaxSpareServers), spawning 32 children, there are 0 idle, and 179 total > children > > linux2: > [info] server seems busy, (you may need to increase StartServers, or > Min/MaxSpareServers), spawning 32 children, there are 0 idle, and 1429 total > children > > linux3: > [info] server seems busy, (you may need to increase StartServers, or > Min/MaxSpareServers), spawning 32 children, there are 0 idle, and 78 total > children > > for newbie like me, linux2 is taking so much load compare to linux1 and > linux3. Is the load balancer not distributing the load across the servers? I > mean, the numbers may not be equal to all servers but at least just differ > by a couple of tens of processes not hundreds. > > All servers have MaxSpareServers 10 and StartServers 5. Any ideas, why > linux2 has so much? > > > thanks, > Sir june >
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