From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from pippin.tausq.org (gandalf.tausq.org [64.81.244.94]) by dsl2.external.hp.com (Postfix) with ESMTP id CEB69482D for ; Sun, 9 Feb 2003 17:45:35 -0700 (MST) Date: Sun, 9 Feb 2003 15:56:56 -0800 From: Randolph Chung To: Grant Grundler Cc: Matthew Wilcox , parisc-linux@lists.parisc-linux.org Subject: Re: [parisc-linux] Re: [parisc-linux-cvs] linux grundler Message-ID: <20030209235656.GA31429@tausq.org> Reply-To: Randolph Chung References: <20030208222242.AA3554829@dsl2.external.hp.com> <20030208222746.GB19683@dsl2.external.hp.com> <20030208232303.B27544@parcelfarce.linux.theplanet.co.uk> <20030209031014.GD19683@dsl2.external.hp.com> <20030209122913.G27544@parcelfarce.linux.theplanet.co.uk> <20030209191441.GA21938@dsl2.external.hp.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20030209191441.GA21938@dsl2.external.hp.com> Sender: parisc-linux-admin@lists.parisc-linux.org Errors-To: parisc-linux-admin@lists.parisc-linux.org List-Help: List-Post: List-Subscribe: , List-Id: parisc-linux developers list List-Unsubscribe: , List-Archive: > I've not done or seen any lmbench perf results recently but before hpux well, we can fix that... :) Here are the numbers for a 2x440Mhz A500 running 2.4.20-pa24 SMP. btw, if you look at http://lists.parisc-linux.org/pipermail/parisc-linux/2002-April/015984.html we are only 2-3x slower than hpux :-) I'm a bit confused about the "mmap latency" numbers. why are they so high? Related to this, thibaut and I were experimenting with running dbench on two A500s today running identical kernels, but one is 2x440MHz and one is 2x550MHz. The 550MHz is almost 10x faster. Is that expected? Memory/disk configurations (3GB RAM in 440MHz, 2.5GB in 550MHz, etc) are not exactly the same, but I wouldn't have expected them to differ by that much. randolph L M B E N C H 2 . 0 S U M M A R Y ------------------------------------ Basic system parameters ---------------------------------------------------- Host OS Description Mhz --------- ------------- ----------------------- ---- ios Linux 2.4.20- hppa64-linux-gnu 440 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 --------- ------------- ---- ---- ---- ---- ---- ----- ---- ---- ---- ---- ---- ios Linux 2.4.20- 440 0.73 1.85 10.2 11.8 110.8 2.17 16.9 17.K 41.K 85.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 --------- ------------- ----- ------ ------ ------ ------ ------- ------- ios Linux 2.4.20- 5.630 5.1500 4.9900 9.0800 23.4 52.1 175.8 *Local* Communication latencies in microseconds - smaller is better ------------------------------------------------------------------- Host OS 2p/0K Pipe AF UDP RPC/ TCP RPC/ TCP ctxsw UNIX UDP TCP conn --------- ------------- ----- ----- ---- ----- ----- ----- ----- ---- ios Linux 2.4.20- 5.630 20.4 48.4 89.2 172.5 114.1 351.5 1000 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 --------- ------------- ------ ------ ------ ------ ------- ----- ----- ios Linux 2.4.20- 130.0 80.0 509.9 180.0 3120.0K 603.4 58.0 *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 --------- ------------- ---- ---- ---- ------ ------ ------ ------ ---- ----- ios Linux 2.4.20- 49.1 81.0 33.6 74.0 268.4 201.8 168.8 260. 250.9 Memory latencies in nanoseconds - smaller is better (WARNING - may not be correct, check graphs) --------------------------------------------------- Host OS Mhz L1 $ L2 $ Main mem Guesses --------- ------------- ---- ----- ------ -------- ------- ios Linux 2.4.20- 440 20.0 20.0 220.0 No L1 cache?