From owner-freebsd-questions@FreeBSD.ORG Fri May 29 12:12:56 2015 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id A219A52D for ; Fri, 29 May 2015 12:12:56 +0000 (UTC) (envelope-from simplerezo@gmail.com) Received: from mail-ob0-x22c.google.com (mail-ob0-x22c.google.com [IPv6:2607:f8b0:4003:c01::22c]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 6A9501CA7 for ; Fri, 29 May 2015 12:12:56 +0000 (UTC) (envelope-from simplerezo@gmail.com) Received: by obbea2 with SMTP id ea2so55615688obb.3 for ; Fri, 29 May 2015 05:12:55 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=rOGT9DOgvwsATBQ/tkVDAKLtL6cRJySTGusa3t1e53Y=; b=QzsNGMlIniHxQtsz3eabUHBKwXGFZtiAlrw8V4OWJyhrSplDIhbIKDCiWkGVAd0qnU gxgA4Hk/9sj4B5h0q3azjamVjGnTv1x5hCWRwPIEQ/0GLJYAoKrPKTPBsxhtOcjLU0wn nxwSk4MTSRyuiGHyYFXuwGqm3X6q8bycjxcC276t0e/byKxZkhUI5QyjMKS78iPW1CAI XRDL2JnGoSGXhiXtGVWTrcOGwm14lPOkRQa580tbXC0fNfC8b+z6DiZ+kDIzLkC2HyIo 43eSCVW5a7uB0AzDsyc0oGbiqUWIoCbIS6eeQ15zLyKQKD/H0qWbdJYNvodJSy/N2dAA 21Xw== MIME-Version: 1.0 X-Received: by 10.182.20.195 with SMTP id p3mr6802426obe.6.1432901575725; Fri, 29 May 2015 05:12:55 -0700 (PDT) Received: by 10.202.77.66 with HTTP; Fri, 29 May 2015 05:12:55 -0700 (PDT) Date: Fri, 29 May 2015 14:12:55 +0200 Message-ID: Subject: High "flows" value in vmstat -z From: SimpleRezo Backup To: freebsd-questions@freebsd.org Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 29 May 2015 12:12:56 -0000 Hello, We are monitoring a lot of variables on all servers we are managing under FreeBSD. One of them is reporting a high "flows" (USED closed to LIMIT and FAIL high) value in "vmstat -z": $ vmstat -z | \grep -e ITEM -e flows ITEM SIZE LIMIT USED FREE REQ FAIL SLEEP flows: 56, 348192, 328398, 19794, 601404,578976, 0 I can't find any details about this item... I think it's a replacement for ip4flow and ip6flow in previous FreeBSD versions (server is using FBSD 10.1 with custom kernel), but cannot find information about those items neither. Could someone explain me what it is and that could be wrong? Here some more informations: $ grep -i ether /var/run/dmesg.boot bge0: mem 0xd90a0000-0xd90affff,0xd90b0000-0xd90bffff,0xd90c0000-0xd90cffff irq 16 at device 0.0 on pci1 bge0: Ethernet address: 74:86:7a:d0:0a:5c bge1: mem 0xd90d0000-0xd90dffff,0xd90e0000-0xd90effff,0xd90f0000-0xd90fffff irq 17 at device 0.1 on pci1 bge1: Ethernet address: 74:86:7a:d0:0a:5e $ netstat -i Name Mtu Network Address Ipkts Ierrs Idrop Opkts Oerrs Coll eth0 1500 74:86:7a:d0:0a:5c 168954708 0 0 143226889 0 0 eth0 - 192.168.14.0 cosedia 96887104 - - 120785904 - - eth1 1500 74:86:7a:d0:0a:5e 103193946 0 0 77942787 0 0 eth1 - 82.231.225.0 bne75-5-82-231-22 8459404 - - 12833636 - - <...> $ netstat -m 1026/3294/4320 mbufs in use (current/cache/total) 1024/1772/2796/1017080 mbuf clusters in use (current/cache/total/max) 1024/1759 mbuf+clusters out of packet secondary zone in use (current/cache) 0/70/70/508539 4k (page size) jumbo clusters in use (current/cache/total/max) 0/0/0/150678 9k jumbo clusters in use (current/cache/total/max) 0/0/0/84756 16k jumbo clusters in use (current/cache/total/max) 2304K/4647K/6952K bytes allocated to network (current/cache/total) 0/0/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters) 0/0/0 requests for mbufs delayed (mbufs/clusters/mbuf+clusters) 0/0/0 requests for jumbo clusters delayed (4k/9k/16k) 0/0/0 requests for jumbo clusters denied (4k/9k/16k) 0 requests for sfbufs denied 0 requests for sfbufs delayed 5153 requests for I/O initiated by sendfile Another think: it could be related or not, but because of some Apple hardware on network, this host is handling a lot of "arp moves". Regards -- Clement Moulin SimpleRezo