From owner-freebsd-current Sat May 5 14:37:46 2001 Delivered-To: freebsd-current@freebsd.org Received: from btw.plaintalk.bellevue.wa.us (btw.plaintalk.bellevue.wa.us [206.129.5.130]) by hub.freebsd.org (Postfix) with ESMTP id A442F37B424 for ; Sat, 5 May 2001 14:37:36 -0700 (PDT) (envelope-from dennisg@software-munitions.com) Received: from localhost (dennisg@localhost) by btw.plaintalk.bellevue.wa.us (8.11.3/8.11.3) with ESMTP id f45Lb8v00632; Sat, 5 May 2001 14:37:12 -0700 (PDT) (envelope-from dennisg@software-munitions.com) Date: Sat, 5 May 2001 14:37:07 -0700 (PDT) From: Dennis Glatting X-X-Sender: To: Cc: Subject: pgm to kill 4.3 via vm Message-ID: <20010505143035.O613-100000@btw.plaintalk.bellevue.wa.us> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG I wrote a trivial program to fill vm and found I can reliably freeze my system. It may not work on the first attempt, but certainly within three. My command line is: a.out&;a.out&;a.out&;a.out&;a.out& The goal of my program is simply to see how the system behaves under memory exhaustion which, as it turns out on two similar systems, the systems freeze. Specifically, I can switch between consoles but the login prompts do not respond and the system does not respond on the network. I am running 4.3 on a dual processor system. Below are some things. First, the program. Second, dmesg. Finally, my /etc/rc.config. LOL #include #include #include int main( void ) { int rd = open( "/dev/random", O_RDONLY ); char* mem = 0; int cnt = 0; if( rd < 0 ) { fprintf( stderr, "unable to open random device\n" ); exit( 1 ); } while( mem = malloc( 1024 )) { int i, j, k; for( i = 1024, j = 0; i > 0; ) { while(( j = read( rd, mem + ( 1024 - i ), i )) <= 0 ) ; i =- j; } if(( ++cnt % 1024 ) == 0 ) { putchar( '.' ); fflush( stdout ); } if(( cnt % ( 10 * 1024 )) == 0 ) { system( "/bin/sync" ); sleep( 2 ); } } putchar( '\n' ); return 0; } Copyright (c) 1992-2001 The FreeBSD Project. Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 The Regents of the University of California. All rights reserved. FreeBSD 4.3-STABLE #6: Wed May 2 19:57:42 PDT 2001 root@btw:/usr/src/sys/compile/BTW Timecounter "i8254" frequency 1193182 Hz CPU: Pentium III/Pentium III Xeon/Celeron (860.89-MHz 686-class CPU) Origin = "GenuineIntel" Id = 0x686 Stepping = 6 Features=0x383fbff real memory = 268034048 (261752K bytes) avail memory = 254472192 (248508K bytes) Changing APIC ID for IO APIC #0 from 0 to 2 on chip Programming 24 pins in IOAPIC #0 IOAPIC #0 intpin 2 -> irq 0 FreeBSD/SMP: Multiprocessor motherboard cpu0 (BSP): apic id: 0, version: 0x00040011, at 0xfee00000 cpu1 (AP): apic id: 1, version: 0x00040011, at 0xfee00000 io0 (APIC): apic id: 2, version: 0x00170020, at 0xfec00000 Preloaded elf kernel "kernel" at 0xc049e000. Pentium Pro MTRR support enabled md0: Malloc disk npx0: on motherboard npx0: INT 16 interface pcib0: on motherboard IOAPIC #0 intpin 19 -> irq 2 IOAPIC #0 intpin 17 -> irq 13 pci0: on pcib0 pcib1: at device 1.0 on pci0 pci1: on pcib1 pci1: at 0.0 irq 16 pcib2: at device 30.0 on pci0 IOAPIC #0 intpin 18 -> irq 17 pci2: on pcib2 pci2: (vendor=0x1102, dev=0x0002) at 7.0 irq 16 pci2: (vendor=0x1102, dev=0x7002) at 7.1 ahc0: port 0xe800-0xe8ff mem 0xfafff000-0xfaffffff irq 13 at device 8.0 on pci2 aic7892: Wide Channel A, SCSI Id=7, 32/255 SCBs xl0: <3Com 3c905-TX Fast Etherlink XL> port 0xec80-0xecbf irq 16 at device 11.0 on pci2 xl0: Ethernet address: 00:60:08:b0:3d:a6 miibus0: on xl0 nsphy0: on miibus0 nsphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto xl1: <3Com 3c905C-TX Fast Etherlink XL> port 0xec00-0xec7f mem 0xfaffec00-0xfaffec7f irq 17 at device 12.0 on pci2 xl1: Ethernet address: 00:b0:d0:a2:62:ac miibus1: on xl1 xlphy0: <3c905C 10/100 internal PHY> on miibus1 xlphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, auto isab0: at device 31.0 on pci0 isa0: on isab0 atapci0: port 0xffa0-0xffaf at device 31.1 on pci0 ata1: at 0x170 irq 15 on atapci0 uhci0: port 0xff80-0xff9f irq 2 at device 31.2 on pci0 usb0: on uhci0 usb0: USB revision 1.0 uhub0: Intel UHCI root hub, class 9/0, rev 1.00/1.00, addr 1 uhub0: 2 ports with 2 removable, self powered ums0: Microsoft Microsoft Wheel Mouse Optical\M-., rev 1.10/1.21, addr 2, iclass 3/1 ums0: 3 buttons and Z dir. pci0: (vendor=0x8086, dev=0x2413) at 31.3 irq 13 fdc0: at port 0x3f0-0x3f5,0x3f7 irq 6 drq 2 on isa0 fdc0: FIFO enabled, 8 bytes threshold fd0: <1440-KB 3.5" drive> on fdc0 drive 0 atkbdc0: at port 0x60,0x64 on isa0 atkbd0: flags 0x1 irq 1 on atkbdc0 kbd0 at atkbd0 vga0: at port 0x3c0-0x3df iomem 0xa0000-0xbffff on isa0 sc0: at flags 0x100 on isa0 sc0: VGA <16 virtual consoles, flags=0x300> sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0 sio0: type 16550A sio1 at port 0x2f8-0x2ff irq 3 on isa0 sio1: type 16550A ppc0: at port 0x378-0x37f irq 7 on isa0 ppc0: SMC-like chipset (ECP/EPP/PS2/NIBBLE) in COMPATIBLE mode ppc0: FIFO with 16/16/8 bytes threshold lpt0: on ppbus0 lpt0: Interrupt-driven port ppi0: on ppbus0 APIC_IO: Testing 8254 interrupt delivery APIC_IO: routing 8254 via IOAPIC #0 intpin 2 IP packet filtering initialized, divert enabled, rule-based forwarding enabled, default to deny, logging limited to 512 packets/entry by default IPsec: Initialized Security Association Processing. IP Filter: v3.4.16 initialized. Default = pass all, Logging = enabled SMP: AP CPU #1 Launched! acd0: CDROM at ata1-master using PIO4 Waiting 2 seconds for SCSI devices to settle Mounting root from ufs:/dev/da0s1a da0 at ahc0 bus 0 target 0 lun 0 da0: Fixed Direct Access SCSI-3 device da0: 160.000MB/s transfers (80.000MHz, offset 127, 16bit), Tagged Queueing Enabled da0: 8683MB (17783239 512 byte sectors: 255H 63S/T 1106C) da1 at ahc0 bus 0 target 1 lun 0 da1: Fixed Direct Access SCSI-3 device da1: 160.000MB/s transfers (80.000MHz, offset 63, 16bit), Tagged Queueing Enabled da1: 17501MB (35843671 512 byte sectors: 255H 63S/T 2231C) WARNING: / was not properly dismounted xl0: promiscuous mode enabled # This file now contains just the overrides from /etc/defaults/rc.conf # please make all changes to this file. hostname="btw" tcp_extensions="YES" #log_in_vain="YES" #tcp_drop_synfin="YES" #tcp_restrict_rst="YES" icmp_log_redirect="YES" inetd_flags="-Wwl" defaultrouter="206.129.5.129" linux_enable="YES" rand_irqs="0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15" clear_tmp_enable="YES" ntpdate_enable="YES" ntpdate_flags="-b tick.usnogps.navy.mil tock.usnogps.navy.mil" xntpd_enable="YES" #sendmail_enable="NO" named_enable="YES" named_flags="-c /etc/namedb/named.conf" firewall_enable="YES" firewall_quiet="YES" firewall_type="simple" ifconfig_xl0="inet 206.129.5.145 netmask 255.255.255.240" ifconfig_xl1="inet 206.129.5.130 netmask 255.255.255.248" ifconfig_xl1_alias0="inet 206.129.5.131 netmask 255.255.255.248" ifconfig_xl1_alias1="inet 206.129.5.132 netmask 255.255.255.248" gateway_enable="YES" nfs_server_enable="YES" usbd_enable="YES" lpd_enable="YES" syslogd_flags="" ipv6_enable="YES" pv6_network_interfaces="xl0" -- Dennis Glatting To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message