lecture2
2010-11-22 10:32
106 查看
system ring levels
vmstat 1查看系统资源问题,结果是
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------
r b swpd free buff cache si so bi bo in cs us sy id wa st
2 0 0 5888 30272 494008 0 0 219 98 306 592 68 2 27 3 0
2 0 0 5804 30272 494008 0 0 0 0 453 694 100 0 0 0 0
3 0 0 5380 30280 494032 0 0 0 224 603 1284 99 1 0 0 0
3 0 0 5380 30280 494032 0 0 0 0 398 912 99 1 0 0 0
3 0 0 5364 30280 494104 0 0 0 0 392 868 100 0 0 0 0
4 0 0 5348 30280 494104 0 0 0 0 347 644 99 1 0 0 0
2 0 0 5348 30280 494168 0 0 0 0 334 454 100 0 0 0 0
2 0 0 5724 29916 493876 0 0 0 0 439 792 100 0 0 0 0
我连续的用vmstat查看系统资源结果
[root@bogon ~]# vmstat
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------
r b swpd free buff cache si so bi bo in cs us sy id wa st
2 0 0 27264 36092 480644 0 0 313 123 237 439 55 1 39 5 0vmstat
第一条结果是从系统开始到现在的平均值,不是实时的值
time strace -c dd if=/dev/zero of=/dev/null bs=4k count=100k
~~~~~~~~~~~~~~~~~~~~~
watch -n1 -d cat /proc/interrupts
vmstat 1查看系统资源问题,结果是
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------
r b swpd free buff cache si so bi bo in cs us sy id wa st
2 0 0 5888 30272 494008 0 0 219 98 306 592 68 2 27 3 0
2 0 0 5804 30272 494008 0 0 0 0 453 694 100 0 0 0 0
3 0 0 5380 30280 494032 0 0 0 224 603 1284 99 1 0 0 0
3 0 0 5380 30280 494032 0 0 0 0 398 912 99 1 0 0 0
3 0 0 5364 30280 494104 0 0 0 0 392 868 100 0 0 0 0
4 0 0 5348 30280 494104 0 0 0 0 347 644 99 1 0 0 0
2 0 0 5348 30280 494168 0 0 0 0 334 454 100 0 0 0 0
2 0 0 5724 29916 493876 0 0 0 0 439 792 100 0 0 0 0
我连续的用vmstat查看系统资源结果
[root@bogon ~]# vmstat
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu------
r b swpd free buff cache si so bi bo in cs us sy id wa st
2 0 0 27264 36092 480644 0 0 313 123 237 439 55 1 39 5 0vmstat
第一条结果是从系统开始到现在的平均值,不是实时的值
time strace -c dd if=/dev/zero of=/dev/null bs=4k count=100k
~~~~~~~~~~~~~~~~~~~~~
watch -n1 -d cat /proc/interrupts
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