I have a pair of heavy loaded LVS servers.
HP ProLiant DL360 G7, 2x X5675 @ 3.07GHz, 16GB RAM, Intel 82599EB 10-Gigabit
Linux Kernel 184.108.40.206 was patched to prevent "ip_vs_send_async error" as
previously discussed in
ipvs_master and ipvs_backup running all the time with the following options
master sync daemon (mcast=eth3, syncid=1)
backup sync daemon (mcast=eth3, syncid=1)
With the default sysctl parameters net.ipv4.vs.sync_threshold = "3 50"
there is 60% difference in persistent connections between Master and Backup
After lowering sync_threshold to "2 10" the difference was less than 9%.
ipvs_backup process on Backup node use 35% on single CPU core0 with "3 50"
ipvs_backup process on Backup node use 50% on single CPU core0 with "2 10"
I any case looks like ipvs_backup process will be a bottleneck soon.
Is it possible to lower cpu usage of ipvs_backup?
Is it possible to distribute cpu usage of ipvs_backup on multiple CPU cores?
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