I get the following when I check [root@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@dowjones.com *Team:* sitereliabilitytools@dowjones.com