Hello! > Then we did the following tuning attempt: Please, cat /proc/net/tcp and /proc/net/sockstat and send result to me (gzipped), together with /proc/sys/net/ipv4/tcp_* values > echo "20480" > /proc/sys/net/ipv4/tcp_max_orphans Also, you want to increase memory allowed for TCP echo "X/2 X/2 X" > /proc/sys/net/ipv4/tcp_mem where X is memory in pages. 20480 is a crazy number. Valid applications cannot leave so much of orphans. Do you understand that this is more than 80MB of wasted memory? > echo "1" > tcp_orphan_retries Bad idea. Default value is the lowest possible. > echo 30 > /proc/sys/net/ipv4/tcp_keepalive_time > echo 2 > /proc/sys/net/ipv4/tcp_keepalive_probes Bad idea. > Oh btw. we got what I think is a "bad one" too... > Feb 12 16:42:35 mcquack kernel: KERNEL: assertion (tp->lost_out == 0) failed > at tcp_input.c(1202):tcp_remove_reno_sacks Absolutely harmless. This is debugging message. Alexey - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://vger.kernel.org/lkml/