[syslog-ng] uestion

Johnson, Linwood linwood.johnson at dowjones.com
Mon Jun 5 20:15:43 UTC 2023


I get the following when I check
[root at server1~]# syslog-ng
 WARNING: the match() filter without the use of the value() option is
deprecated and hinders performance, please update your configuration;
The kernel refused to set the receive buffer (SO_RCVBUF) to the requested
size, you probably need to adjust buffer related kernel parameters;
so_rcvbuf='536870912', so_rcvbuf_set='425984'

[root@ server1~]# sysctl -a |grep rmem_max
net.core.rmem_max = 212992
sysctl: reading key "net.ipv6.conf.all.stable_secret"
sysctl: reading key "net.ipv6.conf.default.stable_secret"
sysctl: reading key "net.ipv6.conf.eth0.stable_secret"
sysctl: reading key "net.ipv6.conf.lo.stable_secret"
[root@ server1 ~]# sysctl -a |grep vbuf
net.ipv4.tcp_moderate_rcvbuf = 1
sysctl: reading key "net.ipv6.conf.all.stable_secret"
sysctl: reading key "net.ipv6.conf.default.stable_secret"
sysctl: reading key "net.ipv6.conf.eth0.stable_secret"
sysctl: reading key "net.ipv6.conf.lo.stable_secret"
net.sctp.rcvbuf_policy = 0
[root@ server1~ ]# cat /proc/sys/net/ipv4/tcp_rmem
4096    87380   6291456
[root@ server1~ ]# cat /proc/sys/net/core/rmem_default
212992
[root@ server1~ ]# cat /proc/sys/net/core/rmem_max
212992
[root@ server1~ ]# grep . /proc/sys/net/ipv4/tcp*mem
/proc/sys/net/ipv4/tcp_mem:173202       230936  346404
/proc/sys/net/ipv4/tcp_rmem:4096        87380   6291456
/proc/sys/net/ipv4/tcp_wmem:4096        16384   4194304
[root@ server1~ hisotry]#

I attempted to make the changes on the server.
What can I do to resolve this issue?




-- 
Thanks in advance,

Linwood Johnson
Senior Engineer | Unix Systems Administrator
Site Reliability Tools
[image: NewsTech]
P.O Box 300 | Princeton NJ 08543
*(W)* 609-627-2179 *(C)* 732-740-0694
*Email:* Linwood.Johnson at dowjones.com
*Team:* sitereliabilitytools at dowjones.com
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