From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S263111AbVCEQqs (ORCPT ); Sat, 5 Mar 2005 11:46:48 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S263121AbVCEQmv (ORCPT ); Sat, 5 Mar 2005 11:42:51 -0500 Received: from www.rapidforum.com ([80.237.244.2]:26754 "HELO rapidforum.com") by vger.kernel.org with SMTP id S262130AbVCEQjv (ORCPT ); Sat, 5 Mar 2005 11:39:51 -0500 Message-ID: <4229E0D0.9000508@rapidforum.com> Date: Sat, 05 Mar 2005 17:39:44 +0100 From: Christian Schmid User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8a3) Gecko/20040817 X-Accept-Language: de, en MIME-Version: 1.0 To: Nick Piggin CC: Rik van Riel , linux-kernel@vger.kernel.org Subject: Re: Slowdown on high-load machines with 3000 sockets References: <4221FB13.6090908@rapidforum.com> <422239A8.1090503@rapidforum.com> <42225B34.7020104@rapidforum.com> <42226607.6020803@rapidforum.com> <4222A887.80301@yahoo.com.au> <4223696C.8060407@rapidforum.com> <4223AD5F.1090500@yahoo.com.au> In-Reply-To: <4223AD5F.1090500@yahoo.com.au> Content-Type: multipart/mixed; boundary="------------030800090707080003050600" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org This is a multi-part message in MIME format. --------------030800090707080003050600 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Attached is another traffic-image. This one is with 2.6.10 and a 3/1 split, preemtive kernel, so all defaults. The first part is where I throttled the whole thing to 100 MBit in order to build up a traffic-jam ;) When I released it, it jumped up immediately but suddenly it goes down (each pixel is one second) Playing around with min_free_kbytes didnt help. Where it goes up again I set lower_zone_protection to 1024000 and where it goes down I set it to 0 again and where it goes up the last time... guess.. Well I was only able to test this with 3500 sockets. I will try to jam up tomorrow to reach 5000 sockets to see if that is really the reason. Nick Piggin wrote: > Christian Schmid wrote: > >> This issue has been tracked down more. This bug does NOT appear if I >> disable preemtive kernel. >> Maybe this helps. >> > > Yes, it may help - can you boot with profile=schedule and get > the results for say, a 30 second period while the application > is experiencing problems? > > So: > > start application > wait till it hits slowdown > readprofile -r ; sleep 30 ; readprofile > schedprof.out > > and send schedprof.out, please? > > Thanks, > Nick > > > --------------030800090707080003050600 Content-Type: image/png; name="traffic2.png" Content-Transfer-Encoding: base64 Content-Disposition: inline; filename="traffic2.png" iVBORw0KGgoAAAANSUhEUgAAArEAAABpCAYAAAAtKHtGAAAABmJLR0QA/wD/AP+gvaeTAAAA CXBIWXMAAAuJAAALiQE3ycutAAAAB3RJTUUH1QMFAQo4LXaX/QAAAB10RVh0Q29tbWVudABD cmVhdGVkIHdpdGggVGhlIEdJTVDvZCVuAAAJLElEQVR42u3dvXKcWBoG4NNTBD2ZyaRrnY03 2N18Ezvc0BNM1c4lONzbkDImEwFV2kBGRrih+ecceJ4qF6aR6NP8vo0+DpeieHoNifj06SEA AHBuf/vnl5Cl1ui//nq25gAANpTnD6EonqOZT6hC+MVqAQAgKZkQCwBAaqpSiAUAIDHZVYgF ACAxamIBAMbL84fO1+t/rLi81cQCAMwPVmcJrmt8xknLTk0sAMDwwDYmbB051NafrX3luf16 1+/MDrVqYgEA5odbhofUoeG1dz6p1cR60AEAINCmv3yG1g53hlo1sQAAJBfg1cQCAJAcNbEA APfN6X3g7CUHq3x+/cQCAEQY0nzOflkIWX9jHz+MF8XTbtMAACCE0F8TWwfKonh6D5P1a1tP A4C9uQsd23xE1MQCAJDcl7W+mtjm1dDmVVIAcDIH2/6u+vqJ9ed9AIB5oS71L0PRtr8q+2/s inNhCtIAbHXO6R/nfNvA3vPZ43MvsR/M+fy32vLbPz6nF2KVNACwzUn84ft55/mnq1FF4THo Z9kGbq3/afnlOZltvr3dt5fBlGUyZzm22xJCCP/693/d2AUAILAnVvaQTbyxa+tpAOCEDnHs A1vvHzff715NbF+I3HoaAIAvMoQQ9BMLAHD2MJvkZ+zrJxYAAKKUCbEAAKSmKoVYAAASoyYW AMZz0w/sTE0sAAiskBw1sQAAvqSl9D55/qAmFgBgi2Dniv7C1MQCgKACyVETCwBAcrLQ/9jZ PH/8MN58LOzW0wAAmC/PH0JRPKf9IfpqYutAWRRP72Gyfm3raQAALBtkkzamJrYZLgFACFD/ im1mN2piAQDOGTKT/rz3amLfPuCPP+m7EgsAwO6q8n6Ibdan5vnj7kFWnSwAscjzYa+R9jpN af5Hb/N7W7LP90NsbFwNBmD9E+WwP7O27/A+xF3fJ1/vRfG86p/Z6+1jr21lymdbe5lMakv1 RU0sAGwZCGKYN5Z78rKeG7vaZQTN17aeBgCCD/DuXk1sX4jcehpwnjDgz7GAY9zy73GoL1tj +okFAMKxg4H1SCr0EwsAy4YgYUiA9Rk3+ByZEAsAIMCmpiqFWAAQHCAxamIBAF82SI6aWAAQ kCA5amIBYN/wumfQFbJJlppYAFg/KDbDYtf/hwbOGIOnMHyML1RJURMLAPGHiaN237XX52l/ sSBBamIBIO4Ad+/nhsxHYDtfiD98UM9C/2NnPy6MxxDCj0fD1uO15iNj15gGAELLj/kMfXTp WQLslMe5CvcJL6ehNbHtcNkMtO1Qu8Y0sOMCZzi2zD3mOGalvU0ocxhhSE1snj+6IupgAsCG 54whNbB9N4w5Jx0nK1hvHdTEAkBaoWZoAF4jEB0hUKX+GYTe7+71E+sqrJ0FAOeg9jxT6Qc3 lfNxu23tK/FdpQanLkGoyu4bu2INsCnWyea5A2naJwHLwDKHtLb5vvm1p0197zHzmTpt6eUY y7FlSDvGLrPTHTezz/29E9wKjHuHyJSuDNffjMbeLUlc63Dt9bfFe1jmMO34vd257XnR96z3 oa553prebENzelfb6tfbw3vvcWsZT+lVoP07fW2Nzdx2pvI5V1V96S4nqHsJaPYWkFqIBPY5 IZ+tvXCEY8LcHhOG9lc7taZTf7iOkR9kE2/sanaB1e4/do1p4CACEOfxaYkbyYYG2666UE6o rya2K7h2ja89DQBYLsjGfpf7mJI8QfaEhvQTCwAIwEvOY6kALbyemH5iAYCYw7Ogyk2ZEAuj D7AxHVCPdnB3sgJgkKoUYok/PKz9Z625vx/LDRQAzkOchprYdHfSGHd2B6Dll8Gtp7EMeULL mOep244BSI6aWJgWuPa46WFI34m3wi7gyxUcjppYWCfY9gXIvtennjzXvvIKAFFRE+ubP+uH 2XvBVQgFgJHUxArL2nO/LUvdFNa80rpXnaqwDMAhnK0mds5JO4YTfmyP2pvyHOsl6zTndIad QoDboo1rLUMBGYBVZaH/sbN5/vhhvPlY2K2nHSk8t8frR+r1nfi7fqbrd4riefT7TAkeQ9qT 5w+9jw2cEoantLmrre22HT2AtdfH0kF27LwFXgBG66uJrQNlUTy9h8n6ta2nsU6YPtv7W/9K CQCcjw8iu3ZfiT3KVVDssA4mlicABzO0JrZ5lZR9TvpHDAbCDoDjIUxyryY2xgBb1/MN3eHr n+2rBx06v3v1p1PqDAFA8IaRqnLYjV1xXYG9hDwfs5N9HPb9zPQdeZn5LHtwif3gp13HP8FZ F4DjNSvJPneH2HhLCF6tuAHGXK3WvnSW25m2wb4eLWDdcOQYANGrvnjYAQAAiRlTE1uru8DK 88cP0+ortmtMAwCAd301sfcCZN/0NaYBnN29B4cAnEZ2VU4AAEBihvYTC8APS934s8R8lrwJ yQ1NQDIyIdZJVvucxA+6LK3L467/VOcNLKgqhVgAABKTXcOlKJ6S6njVt2RgbbH1F6xfZe0G Pvrt74n1E/vpk4MOAMDpqYkFACA5amIBAEiOfmIBAEiOfmIBfhbbTT+6pANoURMLgC8pQHKq MmSWAgD87DVcQgghXMLr+/+bLuH15u/cep10t4H2+uzaFm693rWdpLwsmsMxpvzOrd99X55n q4mduvCm/u5ruPz0e3PasMZ8lpxfPY/m515yvnvMo2/9xbouU9leuuazxfKAMdtm1zZZH+ua /7pev/dv6u/1za+vjbeO22OOgWPObbfed439fei85q6Xse/dN9+tjvlLbk9zMtFS++NruIRQ hfSuxM5d6VsH2bE7+1LtmfKNZ+mw2Lexj23fVkH2VrsE2WnzG7qOYwyyc64YnKE9U9u11BWp Na927rWct9w/9wiyY+Y/Z/tL7UvwlkE2xf2iVxaUE5zhKoL2HWe52QbP2faj7C+HP6liv7D9 bqcqw+XrH99eQ3YNZVWGa3YNoSqDcePGjRs3bty4ceNRjIdrKEMZriGEMoT38cvXP//3Wr9k aGhoaGhoaGhoGNXwQ6D9MfWXEMJb4jU0NDQ0NDQ0NDSMbXh9i67X7BrK79UEZRXC5euf317L 6u0H3y7hvk0wbty4cePGjRs3bjym8VCF8FK9hF+zX8PlP79/06EdAABxy0J4Kd8C7Ev1Ev4P Lmw0yHQGMuQAAAAASUVORK5CYII= --------------030800090707080003050600--