[tor-bugs] #4626 [Tor Directory Authority]: Very high cpu usage for gabelmoo running master

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#4626: Very high cpu usage for gabelmoo running master
-------------------------------------+--------------------------------------
 Reporter:  Sebastian                |          Owner:                    
     Type:  defect                   |         Status:  needs_review      
 Priority:  major                    |      Milestone:  Tor: 0.2.3.x-final
Component:  Tor Directory Authority  |        Version:                    
 Keywords:                           |         Parent:                    
   Points:                           |   Actualpoints:                    
-------------------------------------+--------------------------------------

Comment(by Sebastian):

 In contrast, 44619d5e4 with bug4626_try1 cherry-picked on top of it looks
 like this:

 {{{

 30790    11.0720  tor                      sha1_block_data_order
 12867     4.6269  tor                      lh_retrieve
 10654     3.8311  tor                      ssleay_rand_add
 10564     3.7988  tor                      CRYPTO_lock
 10479     3.7682  tor                      CRYPTO_THREADID_cmp
 9484      3.4104  tor                      ERR_clear_error
 7611      2.7369  tor                      bn_mul_mont
 7295      2.6233  tor                      connection_handle_write
 5497      1.9767  libevent-2.1.so.1.0.0
 event_process_active_single_queue
 5220      1.8771  tor                      ssl3_read_n
 4833      1.7379  libc-2.11.2.so           _int_free
 4705      1.6919  tor                      assert_connection_ok
 4533      1.6300  tor                      ssl3_accept
 4526      1.6275  tor                      SHA1_Update
 4372      1.5722  libc-2.11.2.so           memset
 4193      1.5078  libevent-2.1.so.1.0.0    event_base_loop
 4036      1.4513  tor                      EVP_DigestInit_ex
 3990      1.4348  tor                      SHA1_Final
 3906      1.4046  tor                      conn_write_callback
 3665      1.3179  tor                      ssl3_setup_read_buffer
 3582      1.2881  tor                      flush_buf_tls
 3576      1.2859  tor                      ssl3_read_bytes
 3462      1.2449  tor                      connection_bucket_write_limit
 3380      1.2154  libevent-2.1.so.1.0.0    event_pending
 3293      1.1841  libc-2.11.2.so           _int_malloc
 3186      1.1457  tor                      connection_bucket_round_robin
 3174      1.1414  tor                      tor_tls_write
 2929      1.0533  tor                      ssl3_write_bytes
 2713      0.9756  libc-2.11.2.so           __read_nocancel
 2612      0.9393  tor                      int_thread_get_item
 2546      0.9155  tor                      assert_buf_ok
 2425      0.8720  libc-2.11.2.so           free
 2393      0.8605  tor                      SHA1_Init
 2374      0.8537  tor                      SSL_get_error
 2353      0.8461  tor                      tor_tls_get_error
 2351      0.8454  tor                      ssl3_release_read_buffer
 2288      0.8228  tor                      EVP_MD_CTX_cleanup
 2243      0.8066  tor                      CRYPTO_add_lock
 2222      0.7990  tor                      ssl3_get_message
 2046      0.7357  libc-2.11.2.so           malloc
 2005      0.7210  tor                      get_error_values
 1942      0.6983  libevent-2.1.so.1.0.0    gettime
 1938      0.6969  libevent-2.1.so.1.0.0    event_active_nolock
 1896      0.6818  libc-2.11.2.so           memcpy
 1894      0.6811  libevent-2.1.so.1.0.0    evmap_io_active
 1869      0.6721  tor                      int_thread_release
 }}}

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4626#comment:13>
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