From mboxrd@z Thu Jan 1 00:00:00 1970 From: "McCaffity, Ray" Date: Tue, 01 May 2001 19:47:46 +0000 Subject: RE: [Linux-ia64] New Red Hat Linux Beta release for ia64 availabl Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org Just a lot of little questions here, not really directed at anyone in particular. 1. I know with all the hub-bub surrounding BogoMips the last few years on the x86 platforms, the number doesn't mean a whole lot. But I still use it as a "close-enough" baseline for some of my servers. Anyway, the output from cat /proc/cpuinfo is slightly different from the bogoMips in the dmesg. Which one is more reliable? 2. For my 733Mhz IA64's, my BogoMips is around 730, which is slower than 1 bogo per MHz. This is a long way from what I get with x86 processors. Perhaps it's mostly because I haven't been able to optimize my kernel yet, (typically my x86 kernels will fit on a floppy pretty easily after recompiling, and then my benchmarks are sometimes as much as 50% faster depending on what I'm trying to do) I am finally able to download the new redhat/wolverine as I'm typing this. Hopefully I'll have better luck compiling it. 3. If the strength of the IA64 isn't really speed, I suspect it's power is in the number of multiple threads? For example, on some of my Solaris servers I run apache bench against a certain file (single URL). But I can't have more than 256 connections to that single file without making some changes to kernel parameters, if I go too far the server starts getting unstable. What are the number of file handles supported by Linux 2.4.x ? Is is different for IA64? I have been able to run over 1000 concurrent connections on my IA64 server and it doesn't seem to slow it down much. 4. I know everything we are talking about here is beta, but another area I have problems with is 32-bit emulation. I have seen questions about Oracle and JAVA for IA64 Linux on other threads, and who knows when they'll happen. Has anyone had much luck trying to get these to run under Linux-IA64? Not really meaning to take up peoples important time with trivial questions. But some of this affects plans our IT dept has over the 6 months to a year. Ray