Hi, after upgrading our firewall from 4.1.17 to 4.4.0, we've noticed quite a performance drop.. Slight network load seems to cause high CPU load..
running perf of almost idle system shows:
samples pcnt function DSO
_______ _____ _______________________________________
___________________________________________________________________________
631.00 20.7% e1000_power_down_phy_copper_80003es2lan
/lib/modules/4.4.0lb6.01/kernel/drivers/net/ethernet/intel/e1000e/e1000e.ko
191.00 6.3% do_raw_spin_lock
[kernel.kallsyms]
165.00 5.4% ipt_register_table
/lib/modules/4.4.0lb6.01/kernel/net/ipv4/netfilter/ip_tables.ko
119.00 3.9% cache_init
/usr/sbin/netstat-probe
118.00 3.9% __memset_sse2
/lib64/libc-2.12.so
88.00 2.9% cache_write_packet
/usr/sbin/netstat-probe
41.00 1.3% __fget
[kernel.kallsyms]
40.00 1.3% memcpy
[kernel.kallsyms]
when there is some network traffic, e1000_power_down_phy_copper_80003es2lan
jumps to much higher
numbers.. as far as I understand the code, this seems suspicious to me..
Anyone hit the same problem?
I can try upgrading to 4.4.8-rc1 tomorrow or reverting to 4.1.17
lspci of the box adapters:
05:00.0 Ethernet controller: Intel Corporation 82573E Gigabit Ethernet
Controller (Copper) (rev 03)
07:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet
Controller
09:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet
Controller
0b:00.0 Ethernet controller: Intel Corporation 82573L Gigabit Ethernet
Controller
BR
nik
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Ing. Nikola CIPRICH
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