Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1030439AbWHOSWG (ORCPT ); Tue, 15 Aug 2006 14:22:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1030441AbWHOSWG (ORCPT ); Tue, 15 Aug 2006 14:22:06 -0400 Received: from odyssey.analogic.com ([204.178.40.5]:38412 "EHLO odyssey.analogic.com") by vger.kernel.org with ESMTP id S1030439AbWHOSWE convert rfc822-to-8bit (ORCPT ); Tue, 15 Aug 2006 14:22:04 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT X-MimeOLE: Produced By Microsoft Exchange V6.5.7226.0 X-OriginalArrivalTime: 15 Aug 2006 18:22:03.0014 (UTC) FILETIME=[B4A7FA60:01C6C097] Content-class: urn:content-classes:message Subject: Re: Maximum number of processes in Linux Date: Tue, 15 Aug 2006 14:22:02 -0400 Message-ID: In-Reply-To: <3420082f0608151059s40373a0bg4a1af3618c2b1a05@mail.gmail.com> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: Maximum number of processes in Linux thread-index: AcbAl7S2RbLGxV4bSae46xxeB7FHbw== References: <3420082f0608151059s40373a0bg4a1af3618c2b1a05@mail.gmail.com> From: "linux-os \(Dick Johnson\)" To: "Irfan Habib" Cc: "Linux kernel" Reply-To: "linux-os \(Dick Johnson\)" Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1750 Lines: 56 On Tue, 15 Aug 2006, Irfan Habib wrote: > Hi, > > What is the maximum number of process which can run simultaneously in > linux? I need to create an application which requires 40,000 threads. > I was testing with far fewer numbers than that, I was getting > exceptions in pthread_create > > Regards > Irfan #include int main(){ unsigned long i; while(fork() != -1) i++; printf("%u\n", i); return 0; } $ gcc -o xxx xxx.c $ ./xxx 1251392833 <<---- At least this number 1251392834 1251392834 1251392834 1251392834 1251392833 1251392833 1251392834 1251392834 1251392834 ^C $ killall xxx BYW 40,000 threads? 40,000 tasks all sharing the same address space? Hopefully this is just a training exercise to see if it's possible. Cheers, Dick Johnson Penguin : Linux version 2.6.16.24 on an i686 machine (5592.62 BogoMips). New book: http://www.AbominableFirebug.com/ _  **************************************************************** The information transmitted in this message is confidential and may be privileged. Any review, retransmission, dissemination, or other use of this information by persons or entities other than the intended recipient is prohibited. If you are not the intended recipient, please notify Analogic Corporation immediately - by replying to this message or by sending an email to DeliveryErrors@analogic.com - and destroy all copies of this information, including any attachments, without reading or disclosing them. Thank you. - 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/