From owner-freebsd-net@FreeBSD.ORG Tue Feb 26 20:05:32 2008 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id B747B106566B for ; Tue, 26 Feb 2008 20:05:32 +0000 (UTC) (envelope-from dave@raven.za.net) Received: from elektra.opteqint.net (elektra.opteqint.net [209.25.178.105]) by mx1.freebsd.org (Postfix) with ESMTP id 92F2C13C469 for ; Tue, 26 Feb 2008 20:05:32 +0000 (UTC) (envelope-from dave@raven.za.net) Received: from [41.242.10.56] (helo=DHA12123) by elektra.opteqint.net with esmtpsa (TLSv1:AES128-SHA:128) (Exim 4.66 (FreeBSD)) (envelope-from ) id 1JU63K-000E3I-P3; Tue, 26 Feb 2008 12:05:30 -0800 From: "Dave Raven" To: "'Ingo Flaschberger'" References: <03cb01c8789b$04aade30$0e009a90$@za.net> <03cf01c8789e$f15b0860$d4111920$@za.net> <03d001c878a0$bf3d8680$3db89380$@za.net> <03de01c878a3$90cc7560$b2656020$@za.net> <03e501c878a5$588f1c50$09ad54f0$@za.net> <03e601c878a6$87380980$95a81c80$@za.net> <03ef01c878a9$8aa08180$9fe18480$@za.net> <03f901c878ac$ea20df30$be629d90$@za.net> In-Reply-To: Date: Tue, 26 Feb 2008 22:05:15 +0200 Message-ID: <040401c878b2$eac6fb80$c054f280$@za.net> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Mailer: Microsoft Office Outlook 12.0 Thread-Index: Ach4rbrgbfDL2q7zSBC/uTBd6b5G6QABM/UQ Content-Language: en-us Cc: freebsd-net@freebsd.org Subject: RE: Hping/Ping X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 26 Feb 2008 20:05:32 -0000 Ingo, you are a lifesaver! intr_queue_drops was rising very quickly, after changing queue_maxlen to 500 (from 50) the problems all went away. What's a reasonable value for that for a high load box (5000+ interrupts a second) ? Also, while over a 1000 pings have gone through fine now, a minute or two after I made the change I saw this -- 64 bytes from x.x.x.x: icmp_seq=25 ttl=255 time=0.465 ms ping: sendto: No buffer space available ping: sendto: No buffer space available ping: sendto: No buffer space available ping: sendto: No buffer space available ping: sendto: No buffer space available ping: sendto: No buffer space available ping: sendto: No buffer space available 64 bytes from x.x.x.x: icmp_seq=35 ttl=255 time=0.294 ms It hasn't happened again (and I hope it doesn't) - but is that something I should look for? Thank you again - very much Dave -----Original Message----- From: Ingo Flaschberger [mailto:if@xip.at] Sent: Tuesday, February 26, 2008 9:28 PM To: Dave Raven Cc: freebsd-net@freebsd.org Subject: RE: Hping/Ping Dear Dave, some more ideas: sysctl -a | fgrep ip.intr_qu Kind regards, Ingo Flaschberger