Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 12 Feb 2001 15:32:10 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 12 Feb 2001 15:32:01 -0500 Received: from minus.inr.ac.ru ([193.233.7.97]:46098 "HELO ms2.inr.ac.ru") by vger.kernel.org with SMTP id ; Mon, 12 Feb 2001 15:31:50 -0500 From: kuznet@ms2.inr.ac.ru Message-Id: <200102122031.XAA31392@ms2.inr.ac.ru> Subject: Re: 2.4.1 errors under heavy network load To: magnus.walldal@b-linc.COM (Magnus Walldal) Date: Mon, 12 Feb 2001 23:31:17 +0300 (MSK) Cc: linux-kernel@vger.kernel.org In-Reply-To: from "Magnus Walldal" at Feb 12, 1 08:45:07 pm X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org 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 majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://vger.kernel.org/lkml/