Messages in this thread |  | | Date | Thu, 15 Nov 2001 08:49:56 -0500 | From | war <> | Subject | System Locks Temporarily When Untarring Large Files |
| |
Problem to report: - I often decompress tar files which are several hundred megabytes big. - With newer 2.4.x kernels (2.4.10-14), when I am decompressing a large tar file, my X session locks up for about 20-30 seconds. - With Kernel 2.4.3, I do not recall X locking up when dealing with large files.
1) Could one of my paramters for the /proc be causing this? 2) I got the basic lines from "Optimizing and Securing RedHat Linux..." and customized them for my machine. 3) Where did /proc/sys/vm/buffermem go from earlier 2.4.x kernels? What has it been replaced with?
1) Here is what I use to optimize the system.
#!/bin/sh
check() { if [ "`whoami`" != "root" ] then echo "You must be root to use this program." exit fi }
filesystem() { echo "Improving Overall Performance..." echo "Improving filesystem (swap) performance ................. [ ENABLED ]" echo "100 1200 128 512 15 5000 500 1884 2" > /proc/sys/vm/bdflush #echo "Optimizing buffermem for a 1024MB configuration ......... [ ENABLED ]" # for earlier 2.4.x kernels #echo "80 10 60" > /proc/sys/vm/buffermem echo "Optimizing the file-max for a 1024MB configuration ...... [ ENABLED ]" echo "65536" > /proc/sys/fs/file-max }
network() { echo "Securing network settings..."
echo "Enable ICMP Pings ....................................... [ ENABLED ]" echo "0" > /proc/sys/net/ipv4/icmp_echo_ignore_all
echo "Disable Broadcast ICMP Packets .......................... [ ENABLED ]" echo "1" > /proc/sys/net/ipv4/icmp_echo_ignore_broadcasts
echo "Disable Source IP Routing ............................... [ ENABLED ]" for i in /proc/sys/net/ipv4/conf/*/accept_source_route do echo "0" > $i done
echo "Enabling SYN Cookies .................................... [ ENABLED ]" echo "1" > /proc/sys/net/ipv4/tcp_syncookies
echo "Enabling ICMP ignore on bogus error responses ........... [ ENABLED ]" echo "1" > /proc/sys/net/ipv4/icmp_ignore_bogus_error_responses
echo "Enabling IP Spoofing Protection ......................... [ ENABLED ]" for i in /proc/sys/net/ipv4/conf/*/rp_filter do echo "1" > $i done
echo "Enabling Logging Of Spoofed Packets ..................... [ ENABLED ]" for i in /proc/sys/net/ipv4/conf/*/log_martians do echo "1" > $i done
echo "Increasing Additional Port Usage ........................ [ ENABLED ]" echo "32768 61000" > /proc/sys/net/ipv4/ip_local_port_range
echo "Increasing General TCP/IP Throughput .................... [ ENABLED ]" echo "30" > /proc/sys/net/ipv4/tcp_fin_timeout echo "1800" > /proc/sys/net/ipv4/tcp_keepalive_time echo "0" > /proc/sys/net/ipv4/tcp_window_scaling echo "0" > /proc/sys/net/ipv4/tcp_sack echo "0" > /proc/sys/net/ipv4/tcp_timestamps
echo "Setting keepalive time to 4 months ...................... [ ENABLED ]" echo "12157520" > /proc/sys/net/ipv4/tcp_keepalive_time
}
main() { check filesystem network }
main
2) My system specifications are as follows:
System Hardware: CPU Type: Pentium III CPU Speed: 868.665 MHz Ram: 1005 MB Swap: 2000 MB
System Software: Distribution: Red Hat Linux release 7.2 (Enigma) autoconf: 2.52 autogen: 5.2.11 automake: 1.5 binutils: 2.11.2 esound: 0.2.22 gcc: 2.95.3 gettext: 0.10.40 glibc: 2.2.4 glib: 1.2.10 gnome-libs: 1.2.13 gtk: 1.2.10 imlib: 1.9.11 kdelibs: 2.2.1 kernel: 2.4.14 libtool: 1.4.1 openssl: 0.9.6b orbit: 0.5.8 orbit-idl: 0.6.8 perl: 5.6.1 qt: 3.0.0 rpm: 4.0.3 sdl: 1.2.2 xfree86: 4.1.0 xml2: 2.4.10 xml: 1.8.16
- 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/
|  |