X-Recipient: archive-cygwin AT delorie DOT com DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:message-id:from:to:subject:in-reply-to :references:date; q=dns; s=default; b=kPTCY6MAnaT0lAfP5txv66m72d bnLJpglVwGWqWcJSYDw1prheXCmP4ml0h5Zrleo/Yxq3WnlYIFo5BrqlAfGbJiSX Ps6U1vM70Zd34AjITW1AGK+duunoztzGzejpERICs5jWbVQ0TGcnXLIS4PPJDbuQ eiYEAAkB0aLoBHp2c= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:message-id:from:to:subject:in-reply-to :references:date; s=default; bh=31+u8k6oXijoJ5QYImwYRiuPZxY=; b= cdmaAx7LI1TH0BZA22OdklAkYqxfl6w/evcQ6O6eXDqrXHTcyJhaP/g+BfstjUcP BBWmjFLd49bEdlxYIB9ENkjKILBkCqjZ1+fQ2LPTI2UA2g2FE5A8LC+ieKs9WnlF 6gNQJpNmWkiBcwQ15vLKcY5P8Jlk8ojUCthJJCdha90= Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-0.7 required=5.0 tests=AWL,BAYES_00,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.2 X-HELO: nm21-vm7.access.bullet.mail.bf1.yahoo.com Message-ID: <474284.3203.bm@smtp119.sbc.mail.ne1.yahoo.com> X-Yahoo-SMTP: BDVluRmswBBpb4.UU1_zlPhs_ysfXcBVjBNXyWpyS_6pPgE- X-Rocket-Received: from solabel10.tnolan.com (tednolan AT 74 DOT 243 DOT 198 DOT 131 with plain [98.138.84.52]) by smtp119.sbc.mail.ne1.yahoo.com with SMTP; 01 Feb 2014 04:40:02 +0000 UTC From: tednolan AT bellsouth DOT net To: cygwin AT cygwin DOT com Subject: Re: How big are your /etc/passwd and /etc/group files? In-reply-to: <52EC4727.2000308@gmail.com> References: <20140131203738 DOT GA8707 AT calimero DOT vinschen DOT de> <20140131220314 DOT GH2821 AT calimero DOT vinschen DOT de> <52EC4727 DOT 2000308 AT gmail DOT com> Comments: In-reply-to Max Polk message dated "Fri, 31 Jan 2014 20:00:23 -0500." Date: Fri, 31 Jan 2014 23:13:49 -0500 X-IsSubscribed: yes In message <52EC4727 DOT 2000308 AT gmail DOT com>you write: >On 1/31/2014 5:03 PM, Corinna Vinschen wrote: >> On Jan 31 22:40, Frank Fesevur wrote: >>> 2014-01-31 Corinna Vinschen: >>>> Is anybody here who's using /etc/passwd and/or group files >>>> of more than 16K in size? >>> The new way to store the stuff would make Cygwin definitely faster, >>> but it would struggle with... uhm... 2.6 Megs file on the 32 bit >>> version of Cygwin, Hmm. I'm wondering how to solve that elegantly. >>> Corinna > >Every process needs to load only the current user's entry up front. >Somewhere down the road it only *might* have to do things like translate >from uid/gid into a string for directory listings, in some cases only a >handful of these translations. It's essentially a (old dbm style unix) >database lookup. > >So defer the database lookups to a libgdbm that goes against a (old dbm >style unix) database, and don't keep that in memory, unless you want a >small LRU algorithm in there to keep a small fixed number. I bet the >tiny delay later on a ls or other unix translation won't be very noticeable. > Maybe an /etc/nsswitch.conf to choose the desired behavior? -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple