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- sync; echo 3 > /proc/sys/vm/drop_caches; time tar xf linux-3.2.4.tar; time sync; time rm -rf linux; time sync
- without discard:
- [root@moar tmp]# sync; echo 3 > /proc/sys/vm/drop_caches; time tar xf linux-3.2.4.tar; time sync; time rm -rf linux-3.2.4; time sync
- real 0m12.085s
- user 0m0.233s
- sys 0m2.810s
- real 0m0.798s
- user 0m0.000s
- sys 0m0.023s
- real 0m1.170s
- user 0m0.037s
- sys 0m0.933s
- real 0m0.311s
- user 0m0.000s
- sys 0m0.020s
- [root@moar tmp]# ls
- linux-3.2.4.tar
- [root@moar tmp]# sync; echo 3 > /proc/sys/vm/drop_caches; time tar xf linux-3.2.4.tar; time sync; time rm -rf linux-3.2.4; time sync
- real 0m10.555s
- user 0m0.230s
- sys 0m1.957s
- real 0m0.762s
- user 0m0.000s
- sys 0m0.020s
- real 0m1.097s
- user 0m0.023s
- sys 0m0.907s
- real 0m0.299s
- user 0m0.000s
- sys 0m0.020s
- [root@moar tmp]# sync; echo 3 > /proc/sys/vm/drop_caches; time tar xf linux-3.2.4.tar; time sync; time rm -rf linux-3.2.4; time sync
- real 0m10.720s
- user 0m0.213s
- sys 0m1.980s
- real 0m0.869s
- user 0m0.000s
- sys 0m0.023s
- real 0m1.148s
- user 0m0.023s
- sys 0m0.890s
- real 0m0.247s
- user 0m0.000s
- sys 0m0.020s
- with discard:
- /dev/mapper/home on /home type ext4 (rw,nodiratime,relatime,user_xattr,acl,barrier=1,data=ordered,discard)
- [root@moar tmp]# sync; echo 3 > /proc/sys/vm/drop_caches; time tar xf linux-3.2.4.tar; time sync; time rm -rf linux-3.2.4; time sync
- real 0m10.568s
- user 0m0.237s
- sys 0m1.950s
- real 0m0.829s
- user 0m0.000s
- sys 0m0.020s
- real 0m1.110s
- user 0m0.007s
- sys 0m0.910s
- real 0m12.236s
- user 0m0.000s
- sys 0m0.023s
- [root@moar tmp]# sync; echo 3 > /proc/sys/vm/drop_caches; time tar xf linux-3.2.4.tar; time sync; time rm -rf linux-3.2.4; time sync
- real 0m9.902s
- user 0m0.173s
- sys 0m1.990s
- real 0m0.861s
- user 0m0.000s
- sys 0m0.027s
- real 0m1.143s
- user 0m0.030s
- sys 0m0.933s
- real 0m12.148s
- user 0m0.000s
- sys 0m0.017s
- [root@moar tmp]# sync; echo 3 > /proc/sys/vm/drop_caches; time tar xf linux-3.2.4.tar; time sync; time rm -rf linux-3.2.4; time sync
- real 0m10.341s
- user 0m0.187s
- sys 0m1.983s
- real 0m0.828s
- user 0m0.000s
- sys 0m0.020s
- real 0m1.182s
- user 0m0.033s
- sys 0m0.930s
- real 0m12.189s
- user 0m0.000s
- sys 0m0.017s
- [root@moar tmp]#
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