From owner-freebsd-emulation@FreeBSD.ORG Fri Oct 3 06:50:05 2008 Return-Path: Delivered-To: freebsd-emulation@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 9F4A3106568E for ; Fri, 3 Oct 2008 06:50:05 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id 8BEC78FC15 for ; Fri, 3 Oct 2008 06:50:05 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (gnats@localhost [127.0.0.1]) by freefall.freebsd.org (8.14.2/8.14.2) with ESMTP id m936o5ZQ018524 for ; Fri, 3 Oct 2008 06:50:05 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.2/8.14.1/Submit) id m936o55G018523; Fri, 3 Oct 2008 06:50:05 GMT (envelope-from gnats) Date: Fri, 3 Oct 2008 06:50:05 GMT Message-Id: <200810030650.m936o55G018523@freefall.freebsd.org> To: freebsd-emulation@FreeBSD.org From: Vladimir Grebenschikov Cc: Subject: Re: kern/97326: [linux] file descriptor leakage in linux emulation X-BeenThere: freebsd-emulation@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: Vladimir Grebenschikov List-Id: Development of Emulators of other operating systems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 03 Oct 2008 06:50:05 -0000 The following reply was made to PR kern/97326; it has been noted by GNATS. From: Vladimir Grebenschikov To: bug-followup@FreeBSD.org, bakul@bitblocks.com Cc: Chagin Dmitry Subject: Re: kern/97326: [linux] file descriptor leakage in linux emulation Date: Fri, 03 Oct 2008 10:09:01 +0400 I can confirm - skype does not leak descriptors after first call. Tested on 8-CURRENT. FreeBSD vbook.fbsd.ru 8.0-CURRENT FreeBSD 8.0-CURRENT #4: Wed Oct 1 08:03:48 MSD 2008 root@vbook.fbsd.ru:/usr/obj/usr/src/sys/VBOOK i386 # pkg_info -I linux_base\* skype\* linux_base-f8-8_4 Base set of packages needed in Linux mode (for i386/amd64) skype-2.0.0.72,1 P2P VoIP software # sysctl compat.linux compat.linux.oss_version: 198144 compat.linux.osrelease: 2.6.16 compat.linux.osname: Linux # Analysis of open descriptors: $ lsof | fgrep skype | awk '{ print $9; }' | sort | uniq -c | sort -nr 88 16 /usr/home/vova/.kde/share/config/kioslaverc 16 *:35644 8 localhost:18001 8 10.30.1.111:24183->ppp85-140-221-4.pppoe.mtu-net.ru:23909 8 /usr/local/lib/X11/fonts/webfonts/verdanab.ttf 8 /usr/local/lib/X11/fonts/webfonts/verdana.ttf 8 /usr/local/lib/X11/fonts/bitstream-vera/VeraBd.ttf 8 /usr/local/lib/X11/fonts/bitstream-vera/Vera.ttf 8 /usr/local/bin/skype 8 /usr/home/vova/.Skype/nickname/voicemail256.dbb 8 /usr/home/vova/.Skype/nickname/user4096.dbb 8 /usr/home/vova/.Skype/nickname/user16384.dbb 8 /usr/home/vova/.Skype/nickname/user1024.dbb 8 /usr/home/vova/.Skype/nickname/transfer256.dbb 8 /usr/home/vova/.Skype/nickname/profile16384.dbb 8 /usr/home/vova/.Skype/nickname/message512.dbb 8 /usr/home/vova/.Skype/nickname/message4096.dbb 8 /usr/home/vova/.Skype/nickname/message256.dbb 8 /usr/home/vova/.Skype/nickname/message1024.dbb 8 /usr/home/vova/.Skype/nickname/index2.dat 8 /usr/home/vova/.Skype/nickname/contactgroup512.dbb 8 /usr/home/vova/.Skype/nickname/contactgroup256.dbb 8 /usr/home/vova/.Skype/nickname/chatsync/93/933e6de4e914de3f.dat 8 /usr/home/vova/.Skype/nickname/chatsync/90/90443626f418d589.dat 8 /usr/home/vova/.Skype/nickname/chatsync/57/57d806a6d7ff6809.dat 8 /usr/home/vova/.Skype/nickname/chatsync/56/56187794f108deaf.dat 8 /usr/home/vova/.Skype/nickname/chatsync/03/03d2e8678e8cb7ce.dat 8 /usr/home/vova/.Skype/nickname/chatmsg512.dbb 8 /usr/home/vova/.Skype/nickname/chatmsg256.dbb 8 /usr/home/vova/.Skype/nickname/chatmsg2048.dbb 8 /usr/home/vova/.Skype/nickname/chatmsg1024.dbb 8 /usr/home/vova/.Skype/nickname/chatmember256.dbb 8 /usr/home/vova/.Skype/nickname/chat512.dbb 8 /usr/home/vova/.Skype/nickname/chat4096.dbb 8 /usr/home/vova/.Skype/nickname/chat2048.dbb 8 /usr/home/vova/.Skype/nickname/callmember256.dbb 8 /usr/home/vova/.Skype/nickname/call256.dbb 8 /usr/home/vova 8 /usr/compat/linux/usr/lib/libstdc++.so.6.0.8 8 /usr/compat/linux/usr/lib/libfreetype.so.6.3.16 8 /usr/compat/linux/usr/lib/libfontconfig.so.1.0.4 8 /usr/compat/linux/usr/lib/libexpat.so.0.5.0 8 /usr/compat/linux/usr/lib/gconv/UTF-16.so 8 /usr/compat/linux/usr/X11R6/lib/libXv.so.1.0 8 /usr/compat/linux/usr/X11R6/lib/libXss.so.1.0 8 /usr/compat/linux/usr/X11R6/lib/libXrender.so.1.2.2 8 /usr/compat/linux/usr/X11R6/lib/libXrandr.so.2.0 8 /usr/compat/linux/usr/X11R6/lib/libXinerama.so.1.0 8 /usr/compat/linux/usr/X11R6/lib/libXi.so.6.0 8 /usr/compat/linux/usr/X11R6/lib/libXfixes.so.3.0 8 /usr/compat/linux/usr/X11R6/lib/libXext.so.6.4 8 /usr/compat/linux/usr/X11R6/lib/libXcursor.so.1.0.2 8 /usr/compat/linux/usr/X11R6/lib/libX11.so.6.2 8 /usr/compat/linux/usr/X11R6/lib/libSM.so.6.0 8 /usr/compat/linux/usr/X11R6/lib/libICE.so.6.3 8 /usr/compat/linux/usr/X11R6/lib/X11/locale/lib/common/xomGeneric.so.2 8 /usr/compat/linux/usr/X11R6/lib/X11/locale/lib/common/xlcDef.so.2 8 /usr/compat/linux/usr/X11R6/lib/X11/locale/lib/common/ximcp.so.2 8 /usr/compat/linux/lib/libz.so.1.2.3 8 /usr/compat/linux/lib/librt-2.7.so 8 /usr/compat/linux/lib/libresolv-2.7.so 8 /usr/compat/linux/lib/libpthread-2.7.so 8 /usr/compat/linux/lib/libnss_files-2.7.so 8 /usr/compat/linux/lib/libnss_dns-2.7.so 8 /usr/compat/linux/lib/libm-2.7.so 8 /usr/compat/linux/lib/libgcc_s-4.1.2-20070925.so.1 8 /usr/compat/linux/lib/libdl-2.7.so 8 /usr/compat/linux/lib/libc-2.7.so 8 /usr/compat/linux/lib/libasound.so.2.0.0 8 /usr/compat/linux/lib/ld-2.7.so 8 /usr 8 /dev/null 8 / 1 /usr/local/share/applications/skype.desktop $ lsof | fgrep skype | awk ' ($9 == "") { print $5; }' | sort | uniq -c 64 PIPE 24 unix $ Looks like everything goes as expected - linux's clone() makes copy of all file-handlers per thread. So we have about ~90 (handlers per thread) * 8 (threads) = ~700 open file-handlers. Need to check, but I think, same picture should be on Linux. MacOS contrary, should have better thread support. Probably, somebody encourages skype.com to build native FreeBSD version of skype ? -- Vladimir B. Grebenschikov Parallels Inc. vova@parallels.com