[Swan-dev] oprofile of busy libreswan server
Paul Wouters
paul at nohats.ca
Wed Aug 30 01:55:56 UTC 2017
I was looking at a busy libreswan server to see where it is spending
it's CPU in, to find out if there is something obvious to speed up.
Below are the entries consisting of more then 1% but since most time
looks spend in nss and sqlite and freebl, we might need to get more
detailed info out of oprofile.... The most expensive "native" calls
seem to be state_with_serialno() and vfprintf(). I'm a little
puzzled by with resolve_myid(). And maybe sanitize_string() could
be more sparringly used as well.
Paul
CPU: Intel Ivy Bridge microarchitecture, speed 3292.52 MHz (estimated)
Counted CPU_CLK_UNHALTED events (Clock cycles when not halted) with a unit mask of 0x00 (No unit mask) count 100000
samples % image name app name symbol name
-------------------------------------------------------------------------------
34791 18.9389 libsoftokn3.so pluto /usr/lib/x86_64-linux-gnu/nss/libsoftokn3.so
34791 100.000 libsoftokn3.so pluto /usr/lib/x86_64-linux-gnu/nss/libsoftokn3.so [self]
-------------------------------------------------------------------------------
22648 12.3287 libsqlite3.so.0.8.6 pluto /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6
22648 100.000 libsqlite3.so.0.8.6 pluto /usr/lib/x86_64-linux-gnu/libsqlite3.so.0.8.6 [self]
-------------------------------------------------------------------------------
15405 8.3859 libpthread-2.23.so pluto pthread_mutex_lock
15405 100.000 libpthread-2.23.so pluto pthread_mutex_lock [self]
-------------------------------------------------------------------------------
10967 5.9700 libfreeblpriv3.so pluto /usr/lib/x86_64-linux-gnu/nss/libfreeblpriv3.so
10967 100.000 libfreeblpriv3.so pluto /usr/lib/x86_64-linux-gnu/nss/libfreeblpriv3.so [self]
-------------------------------------------------------------------------------
6861 3.7349 pluto pluto state_with_serialno
6861 100.000 pluto pluto state_with_serialno [self]
-------------------------------------------------------------------------------
5977 3.2537 libc-2.23.so pluto vfprintf
5977 100.000 libc-2.23.so pluto vfprintf [self]
-------------------------------------------------------------------------------
4343 2.3642 libc-2.23.so pluto _int_malloc
4343 100.000 libc-2.23.so pluto _int_malloc [self]
-------------------------------------------------------------------------------
4279 2.3293 pluto pluto resolve_myid
4279 100.000 pluto pluto resolve_myid [self]
-------------------------------------------------------------------------------
4106 2.2352 libc-2.23.so pluto __memcmp_sse4_1
4106 100.000 libc-2.23.so pluto __memcmp_sse4_1 [self]
-------------------------------------------------------------------------------
4056 2.2079 libpthread-2.23.so pluto pthread_mutex_unlock
4056 100.000 libpthread-2.23.so pluto pthread_mutex_unlock [self]
-------------------------------------------------------------------------------
3161 1.7207 pluto pluto sanitize_string
3161 100.000 pluto pluto sanitize_string [self]
-------------------------------------------------------------------------------
2890 1.5732 ip_tables pluto /ip_tables
2890 100.000 ip_tables pluto /ip_tables [self]
-------------------------------------------------------------------------------
2643 1.4388 libc-2.23.so pluto _int_free
2643 100.000 libc-2.23.so pluto _int_free [self]
-------------------------------------------------------------------------------
2582 1.4055 pluto pluto delete_public_keys
2582 100.000 pluto pluto delete_public_keys [self]
-------------------------------------------------------------------------------
2423 1.3190 pluto pluto get_next_rdn
2423 100.000 pluto pluto get_next_rdn [self]
-------------------------------------------------------------------------------
2342 1.2749 libnss3.so pluto /usr/lib/x86_64-linux-gnu/libnss3.so
2342 100.000 libnss3.so pluto /usr/lib/x86_64-linux-gnu/libnss3.so [self]
-------------------------------------------------------------------------------
1968 1.0713 libc-2.23.so pluto malloc
1968 100.000 libc-2.23.so pluto malloc [self]
-------------------------------------------------------------------------------
1959 1.0664 libnspr4.so pluto /usr/lib/x86_64-linux-gnu/libnspr4.so
1959 100.000 libnspr4.so pluto /usr/lib/x86_64-linux-gnu/libnspr4.so [self]
-------------------------------------------------------------------------------
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