From owner-freebsd-fs Mon Oct 30 10:39:20 1995 Return-Path: owner-fs Received: (from root@localhost) by freefall.freebsd.org (8.6.12/8.6.6) id KAA07482 for fs-outgoing; Mon, 30 Oct 1995 10:39:20 -0800 Received: from Apollo.dmacc.cc.ia.us (apollo.dmacc.cc.ia.us [161.210.216.100]) by freefall.freebsd.org (8.6.12/8.6.6) with ESMTP id KAA07477 for ; Mon, 30 Oct 1995 10:39:15 -0800 Received: from vislab19.dmacc.cc.ia.us (vislab19.dmacc.cc.ia.us [161.210.217.130]) by Apollo.dmacc.cc.ia.us (8.6.9/8.6.9) with ESMTP id MAA00675; Mon, 30 Oct 1995 12:39:13 -0600 Received: by vislab19.dmacc.cc.ia.us (940816.SGI.8.6.9/940406.SGI) id MAA10957; Mon, 30 Oct 1995 12:38:58 -0600 From: "Charles F. Randall" Message-Id: <9510301238.ZM10955@vislab19.dmacc.cc.ia.us> Date: Mon, 30 Oct 1995 12:38:58 -0600 In-Reply-To: Petri Helenius "Cache FS? (willing to help)" (Oct 30, 7:49pm) References: <9510301043.ZM10844@vislab19.dmacc.cc.ia.us> <199510301749.TAA02525@silver.sms.fi> X-Mailer: Z-Mail (3.2.0 26oct94 MediaMail) To: Petri Helenius Subject: Re: Cache FS? (willing to help) Cc: freebsd-fs@freebsd.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-fs@freebsd.org Precedence: bulk On Oct 30, 7:49pm, Petri Helenius wrote: > Charles F. Randall writes: > > In essence, you create a fixed-size "cache file" on a local disk and > > then point cachefs at the filesystem you wish to cache (most likely > > NFS and/or CDROM). > > > > Are there any plans in FreeBSD for anything like this? > > > Why bother? If you have a slow network, you buy a faster network, if your > cdrom is slow, you buy a faster cdrom, not more disk space. In my opinion > this is not cost-effective because you cannot get definite performance > impact. Consider the situation where the NFS server and client (with a small local disk) are connected by a slow network link which you do not own. An extreme example, but it should illustrate my point. The client-side caching in AFS should serve another implemented example. -Randy -- Charles F. Randall E-mail: crandall@dmacc.cc.ia.us UNIX Systems Programmer Voice: (515) 965-7057 FAX: (515) 965-7305