Hi all, Testing a 2.4 kernel I have found something I think it's rather strange Running a 2.4.0 kernel with APM enabled (not ACPI), it takes about ten minutes to compile a kernel (Pentium III Coppermine 450 Mhz 128 MB) [eugenio@gic12 linux]$ time make dep clean bzImage modules >& /dev/null real 9m45.098s user 8m1.410s sys 0m28.800s Compiling the same kernel with the same options but with ACPI enabled (not APM) and after failing in the initialization of the ACPI subsystem (see the ouput of dmseg in this kernel), it takes more than an hour to compile the kernel. No swap, no stange messages, just sloooooww [eugenio@gic12 linux]$ time make dep clean bzImage modules >& /dev/null real 78m58.129s user 72m56.610s sys 4m22.810s Can a wrongly initializated ACPI subsystem slow down the clock or something so ? How can I measure the speed ? PS: It doesn't matter if you compile the Kernel or Ptolemy or XFree86, you just need something hard to do for your box :-) PS2: dmesg output of the ACPI kernel Linux version 2.4.0 (root@gic12) (gcc version egcs-2.91.66 19990314 (egcs-1.1.2 release)) #9 Thu Jan 18 11:23:43 WET 2001 BIOS-provided physical RAM map: BIOS-e820: 000000000009fc00 @ 0000000000000000 (usable) BIOS-e820: 0000000000000400 @ 000000000009fc00 (reserved) BIOS-e820: 0000000000010000 @ 00000000000f0000 (reserved) BIOS-e820: 0000000007ef0000 @ 0000000000100000 (usable) BIOS-e820: 0000000000008000 @ 0000000007ff0000 (ACPI data) BIOS-e820: 0000000000008000 @ 0000000007ff8000 (ACPI NVS) BIOS-e820: 0000000000010000 @ 00000000ffff0000 (reserved) Scan SMP from c0000000 for 1024 bytes. Scan SMP from c009fc00 for 1024 bytes. Scan SMP from c00f0000 for 65536 bytes. Scan SMP from c009fc00 for 4096 bytes. On node 0 totalpages: 32752 zone(0): 4096 pages. zone(1): 28656 pages. zone(2): 0 pages. mapped APIC to ffffe000 (01222000) Kernel command line: BOOT_IMAGE=test ro root=302 Initializing CPU#0 Detected 449.079 MHz processor. Console: colour VGA+ 80x25 Calibrating delay loop... 894.56 BogoMIPS Memory: 126668k/131008k available (988k kernel code, 3952k reserved, 344k data, 200k init, 0k highmem) Dentry-cache hash table entries: 16384 (order: 5, 131072 bytes) Buffer-cache hash table entries: 4096 (order: 2, 16384 bytes) Page-cache hash table entries: 32768 (order: 5, 131072 bytes) Inode-cache hash table entries: 8192 (order: 4, 65536 bytes) CPU: Before vendor init, caps: 0387f9ff 00000000 00000000, vendor = 0 CPU: L1 I cache: 16K, L1 D cache: 16K CPU: L2 cache: 256K Intel machine check architecture supported. Intel machine check reporting enabled on CPU#0. CPU: After vendor init, caps: 0387f9ff 00000000 00000000 00000000 CPU serial number disabled. CPU: After generic, caps: 0383f9ff 00000000 00000000 00000000 CPU: Common caps: 0383f9ff 00000000 00000000 00000000 CPU: Intel Pentium III (Coppermine) stepping 01 Enabling fast FPU save and restore... done. Enabling unmasked SIMD FPU exception support... done. Checking 'hlt' instruction... OK. POSIX conformance testing by UNIFIX mtrr: v1.37 (20001109) Richard Gooch ([EMAIL PROTECTED]) mtrr: detected mtrr type: Intel PCI: PCI BIOS revision 2.10 entry at 0xf0200, last bus=1 PCI: Using configuration type 1 PCI: Probing PCI hardware Unknown bridge resource 2: assuming transparent PCI: Using IRQ router PIIX [8086/7110] at 00:02.0 got res[10000000:10000fff] for resource 0 of O2 Micro, Inc. 6832 got res[10001000:10001fff] for resource 0 of O2 Micro, Inc. 6832 (#2) Limiting direct PCI/PCI transfers. Linux NET4.0 for Linux 2.4 Based upon Swansea University Computer Society NET3.039 DMI 2.3 present. 25 structures occupying 960 bytes. DMI table at 0x000F8380. BIOS Vendor: ACER BIOS Version: V3.3 R01-A4g-EN BIOS Release: 02/10/2000 System Vendor: Acer . Product Name: TravelMate 730 Series. Version -1. Serial Number 9149C0110S005002D5M . Board Vendor: Acer . Board Name: Intel 440BX and PX4M. Board Version: -1. IA-32 Microcode Update Driver: v1.08 <[EMAIL PROTECTED]> Starting kswapd v1.8 pty: 256 Unix98 ptys configured Uniform Multi-Platform E-IDE driver Revision: 6.31 [snipped ide info] Real Time Clock Driver v1.10d Linux agpgart interface v0.99 (c) Jeff Hartmann agpgart: Maximum main memory to use for agp memory: 94M agpgart: Detected Intel 440BX chipset agpgart: AGP aperture is 64M @ 0xe0000000 usb.c: registered new driver usbdevfs usb.c: registered new driver hub NET4: Linux TCP/IP 1.0 for NET4.0 IP Protocols: ICMP, UDP, TCP IP: routing cache hash table of 512 buckets, 4Kbytes TCP: Hash tables configured (established 8192 bind 8192) NET4: Unix domain sockets 1.0/SMP for Linux NET4.0. ----------------------------------ACPI messages------------- ACPI: System description tables found ACPI: System description tables loaded ACPI: Subsystem enable failed ------------------------------------------------------------ VFS: Mounted root (ext2 filesystem) readonly. Thanks in advance ----------------------------------------------------------------------- Eugenio Jimenez Yguacel [EMAIL PROTECTED] E.T.S.I. Telecomunicacion Tfno: (+34)-28-458079 Campus de Tafira S/N Fax: (+34)-28-451243 35017 Las Palmas, Spain Beer, breakfast for champions! ----------------------------------------------------------------------- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
