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Performance research
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Revision as of 20:57, 30 January 2014
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20:57, 30 January 2014
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== Dump ==
== Dump ==
−
== <
code
>parse_smaps</code> ==
+
Surprisingly, but the mem-drain time is not the biggest. It's "only" ~0.02 seconds. There are places in
code
that take longer.
−
Time spent in this routine is
about
0.
1
seconds on dump. This one exploits /proc heavily. For a container with 11 tasks the syscall stats look like
+
=== <code>parse_smaps</code> ===
+
+
Time spent in this routine is
up to
0.
2
seconds on dump. This one exploits /proc heavily. For a container with 11 tasks the syscall stats look like
834 read
834 read
Line 27:
Line 29:
1438 openat(4, "map-symlink", O_RDONLY) = 5
1438 openat(4, "map-symlink", O_RDONLY) = 5
11 openat(AT_FDCWD, "/proc/$pid/map_files", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 4
11 openat(AT_FDCWD, "/proc/$pid/map_files", O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC) = 4
+
+
=== <code>parasite_fuxup_vdso</code> ===
+
+
The 2nd longest routine. It takes ~ 0.07 seconds on dump.
== Restore ==
== Restore ==
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