Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Mon, 24 Mar 2003 00:57:57 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Mon, 24 Mar 2003 00:57:57 -0500 Received: from zcars0m9.nortelnetworks.com ([47.129.242.157]:54506 "EHLO zcars0m9.nortelnetworks.com") by vger.kernel.org with ESMTP id ; Mon, 24 Mar 2003 00:57:55 -0500 Message-ID: <3E7EA0F6.8000308@nortelnetworks.com> Date: Mon, 24 Mar 2003 01:08:54 -0500 X-Sybari-Space: 00000000 00000000 00000000 From: Chris Friesen User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.8) Gecko/20020204 X-Accept-Language: en-us MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: Re: lmbench results for 2.4 and 2.5 -- updated results References: <3E7C8B22.7020505@nortelnetworks.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3649 Lines: 79 Okay, I'm somewhat chagrined but a bit relieved at the same time. Linus' comment about being sure that I'm testing the same setup promped me to go through and doublecheck my config. Turns out that I had some debug stuff turned on. Duh. Here are the results of 2.4.20 and 2.5.65 with as close to matching configs as I could make them. The ones that stand out are: --fork/exec (due to rmap I assume?) --mmap (also due to rmap?) --select latency (any ideas?) --udp latency (related to select latency?) --page fault (is this significant?) --tcp bandwidth (explained as debugging code) Sorry about the bogus numbers last time around. Chris L M B E N C H 2 . 0 S U M M A R Y ------------------------------------ Processor, Processes - times in microseconds - smaller is better ---------------------------------------------------------------- Host OS Mhz null null open selct sig sig fork exec sh call I/O stat clos TCP inst hndl proc proc proc ---- ------------- ---- ---- ---- ---- ---- ----- ---- ---- ---- ---- ---- doug Linux 2.5.65 750 0.38 0.73 5.46 7.13 64.2 1.03 3.25 231. 1729 17.K doug Linux 2.4.20 750 0.37 0.50 3.84 5.48 17.5 0.96 3.36 185. 1373 15.K Context switching - times in microseconds - smaller is better ------------------------------------------------------------- Host OS 2p/0K 2p/16K 2p/64K 8p/16K 8p/64K 16p/16K 16p/64K ctxsw ctxsw ctxsw ctxsw ctxsw ctxsw ctxsw ---- ------------- ----- ------ ------ ------ ------ ------- ------- doug Linux 2.5.65 1.420 2.9700 108.7 46.6 157.6 46.7 157.5 doug Linux 2.4.20 1.120 2.3400 91.5 43.5 155.5 45.2 156.0 *Local* Communication latencies in microseconds - smaller is better ------------------------------------------------------------------- Host OS 2p/0K Pipe AF UDP RPC/ TCP RPC/ TCP ctxsw UNIX UDP TCP conn ---- ------------- ----- ----- ---- ----- ----- ----- ----- ---- doug Linux 2.5.65 1.420 7.642 11.4 21.9 45.0 27.2 60.5 104. doug Linux 2.4.20 1.120 6.606 10.3 15.8 40.9 26.2 56.5 82.9 File & VM system latencies in microseconds - smaller is better -------------------------------------------------------------- Host OS 0K File 10K File Mmap Prot Page Create Delete Create Delete Latency Fault Fault ---- ------------- ------ ------ ------ ------ ------- ----- ----- doug Linux 2.5.65 64.8 21.0 165.6 42.0 2550.0 0.946 4.00000 doug Linux 2.4.20 66.1 20.5 192.8 51.6 1612.0 0.764 2.00000 *Local* Communication bandwidths in MB/s - bigger is better ----------------------------------------------------------- Host OS Pipe AF TCP File Mmap Bcopy Bcopy Mem Mem UNIX reread reread (libc) (hand) read write ---- ------------- ---- ---- ---- ------ ------ ------ ------ ---- ----- doug Linux 2.5.65 196. 107. 51.1 222.5 363.4 217.9 217.6 489. 326.0 doug Linux 2.4.20 233. 111. 90.0 253.6 370.0 223.8 226.1 498. 328.9 -- Chris Friesen | MailStop: 043/33/F10 Nortel Networks | work: (613) 765-0557 3500 Carling Avenue | fax: (613) 765-2986 Nepean, ON K2H 8E9 Canada | email: cfriesen@nortelnetworks.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/