4 ms·

We must be running different versions of sar then, as "sar" by itself here (RHEL 5) shows information about the time split between user/system/waitIO/idle -- th

by Erwin 17y ago

We must be running different versions of sar then, as "sar" by itself here (RHEL 5) shows information about the time split between user/system/waitIO/idle -- that certainly does not come from /proc/loadavg. If you run "sar -q" you could get the load average information, but that's not particularly useful, as you can't see whether the 20 load avg an hour ago was caused by heavy disk IO or a dozen CPU bound processes.

nailer 17y ago
Nope, we're likely running the same version. The particular info you mentioned comes from /proc/stat (you're right that it's a different file), but again it's the same sources as top: # lsb_release -d Description: Red Hat Enterprise Linux Server release 5.3 (Tikanga) # rpm -qf $(which sar) sysstat-7.0.2-3.el5 # strace /usr/lib64/sa/sa1 1 1 &> results # grep open results open("/etc/ld.so.cache", O_RDONLY) = 3 open("/lib64/libtermcap.so.2", O_RDONLY) = 3 open("/lib64/libdl.so.2", O_RDONLY) = 3 open("/lib64/libc.so.6", O_RDONLY) = 3 open("/dev/tty", O_RDWR|O_NONBLOCK) = 3 open("/proc/meminfo", O_RDONLY) = 3 open("/usr/lib64/sa/sa1", O_RDONLY) = 3 open("/etc/ld.so.cache", O_RDONLY) = 3 open("/lib64/libc.so.6", O_RDONLY) = 3 open("/etc/localtime", O_RDONLY) = 3 open("/sys/devices/system/cpu", O_RDONLY|O_NONBLOCK|O_DIRECTORY) = 3 open("/proc/tty/driver/serial", O_RDONLY) = 3 open("/proc/interrupts", O_RDONLY) = 3 open("/proc/net/dev", O_RDONLY) = 3 open("/proc/diskstats", O_RDONLY) = 3 open("/var/log/sa/sa06", O_RDWR|O_APPEND) = 3 open("/proc/stat", O_RDONLY) = 4 open("/proc/meminfo", O_RDONLY) = 4 open("/proc/loadavg", O_RDONLY) = 4 open("/proc/vmstat", O_RDONLY) = 4 open("/proc/sys/fs/dentry-state", O_RDONLY) = 4 open("/proc/sys/fs/file-nr", O_RDONLY) = 4 open("/proc/sys/fs/inode-state", O_RDONLY) = 4 open("/proc/sys/fs/super-max", O_RDONLY) = -1 ENOENT (No such file or directory) open("/proc/sys/fs/dquot-max", O_RDONLY) = -1 ENOENT (No such file or directory) open("/proc/sys/kernel/rtsig-max", O_RDONLY) = -1 ENOENT (No such file or directory) open("/proc/net/sockstat", O_RDONLY) = 4 open("/proc/net/rpc/nfs", O_RDONLY) = -1 ENOENT (No such file or directory) open("/proc/net/rpc/nfsd", O_RDONLY) = -1 ENOENT (No such file or directory) open("/proc/diskstats", O_RDONLY) = 4 open("/proc/tty/driver/serial", O_RDONLY) = 4 open("/proc/interrupts", O_RDONLY) = 4 open("/proc/net/dev", O_RDONLY) = 4 # strace top -n -b 1 &> results # grep open results open("/etc/ld.so.cache", O_RDONLY) = 3 open("/lib64/libproc-3.2.7.so", O_RDONLY) = 3 open("/usr/lib64/libncurses.so.5", O_RDONLY) = 3 open("/lib64/libc.so.6", O_RDONLY) = 3 open("/lib64/libdl.so.2", O_RDONLY) = 3 open("/proc/stat", O_RDONLY) = 3 open("/proc/sys/kernel/pid_max", O_RDONLY) = 3 open("/etc/toprc", O_RDONLY) = -1 ENOENT (No such file or directory) open("/root/.toprc", O_RDONLY) = -1 ENOENT (No such file or directory)

by Erwin 17y ago

nailer 17y ago

Nope, we're likely running the same version. The particular info you mentioned comes from /proc/stat (you're right that it's a different file), but again it's the same sources as top: # lsb_release -d Description: Red Hat Enterprise Linux Server release 5.3 (Tikanga) # rpm -qf $(which sar) sysstat-7.0.2-3.el5 # strace /usr/lib64/sa/sa1 1 1 &> results # grep open results open("/etc/ld.so.cache", O_RDONLY) = 3 open("/lib64/libtermcap.so.2", O_RDONLY) = 3 open("/lib64/libdl.so.2", O_RDONLY) = 3 open("/lib64/libc.so.6", O_RDONLY) = 3 open("/dev/tty", O_RDWR|O_NONBLOCK) = 3 open("/proc/meminfo", O_RDONLY) = 3 open("/usr/lib64/sa/sa1", O_RDONLY) = 3 open("/etc/ld.so.cache", O_RDONLY) = 3 open("/lib64/libc.so.6", O_RDONLY) = 3 open("/etc/localtime", O_RDONLY) = 3 open("/sys/devices/system/cpu", O_RDONLY|O_NONBLOCK|O_DIRECTORY) = 3 open("/proc/tty/driver/serial", O_RDONLY) = 3 open("/proc/interrupts", O_RDONLY) = 3 open("/proc/net/dev", O_RDONLY) = 3 open("/proc/diskstats", O_RDONLY) = 3 open("/var/log/sa/sa06", O_RDWR|O_APPEND) = 3 open("/proc/stat", O_RDONLY) = 4 open("/proc/meminfo", O_RDONLY) = 4 open("/proc/loadavg", O_RDONLY) = 4 open("/proc/vmstat", O_RDONLY) = 4 open("/proc/sys/fs/dentry-state", O_RDONLY) = 4 open("/proc/sys/fs/file-nr", O_RDONLY) = 4 open("/proc/sys/fs/inode-state", O_RDONLY) = 4 open("/proc/sys/fs/super-max", O_RDONLY) = -1 ENOENT (No such file or directory) open("/proc/sys/fs/dquot-max", O_RDONLY) = -1 ENOENT (No such file or directory) open("/proc/sys/kernel/rtsig-max", O_RDONLY) = -1 ENOENT (No such file or directory) open("/proc/net/sockstat", O_RDONLY) = 4 open("/proc/net/rpc/nfs", O_RDONLY) = -1 ENOENT (No such file or directory) open("/proc/net/rpc/nfsd", O_RDONLY) = -1 ENOENT (No such file or directory) open("/proc/diskstats", O_RDONLY) = 4 open("/proc/tty/driver/serial", O_RDONLY) = 4 open("/proc/interrupts", O_RDONLY) = 4 open("/proc/net/dev", O_RDONLY) = 4 # strace top -n -b 1 &> results # grep open results open("/etc/ld.so.cache", O_RDONLY) = 3 open("/lib64/libproc-3.2.7.so", O_RDONLY) = 3 open("/usr/lib64/libncurses.so.5", O_RDONLY) = 3 open("/lib64/libc.so.6", O_RDONLY) = 3 open("/lib64/libdl.so.2", O_RDONLY) = 3 open("/proc/stat", O_RDONLY) = 3 open("/proc/sys/kernel/pid_max", O_RDONLY) = 3 open("/etc/toprc", O_RDONLY) = -1 ENOENT (No such file or directory) open("/root/.toprc", O_RDONLY) = -1 ENOENT (No such file or directory)