Re: curl-loader https: low performance due to DNS query?
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Re: curl-loader https: low performance due to DNS query?
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From: Fred H. <di...@gm...> - 2012-03-06 01:52:45
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TIMEOUT -1 -> 60 works a little better but no performance improvement on
CAPS or throughput.
*test 5:*
enable c-ares;
curl_easy_setopt (handle, CURLOPT_DNS_CACHE_TIMEOUT, 60);
dns server: dnsmasq@127.0.0.1, 2,000,000 dns entry cache, resolve *.com to
one IP address
number of domain names in URLs: 780,000
number of client: 1000
CPU usage: 74%
cpu% irq% sirq% sys% iowt% mem_used buf&cached
74.0 0.0 0.7 4.2 0.0 3530.6Mb 250.8Mb
SSL TPS: 360
SSL throughput: 220Mbps
# gprof /usr/bin/curl-loader gmon.out -p | head -50
Flat profile:
Each sample counts as 0.01 seconds.
% cumulative self self total
time seconds seconds calls s/call s/call name
26.63 23.13 23.13 119226 0.00 0.00
Curl_hash_clean_with_criterium
20.34 40.80 17.67 317792146 0.00 0.00
hostcache_timestamp_remove
11.27 50.59 9.79 2579903 0.00 0.00 Curl_hash_pick
7.84 57.40 6.81 120606 0.00 0.00 create_conn
5.65 62.31 4.91 119117401 0.00 0.00 Curl_str_key_compare
4.98 66.64 4.33 329829 0.00 0.00 Curl_hash_add
2.80 69.08 2.44 4476606 0.00 0.00 dprintf_formatf
2.57 71.31 2.23 124019 0.00 0.00 ConnectionStore
1.50 72.61 1.30 740997609 0.00 0.00 ares__is_list_empty
1.16 73.61 1.01 locking_function
0.76 74.27 0.66 238744 0.00 0.00 ares_cancel
0.70 74.88 0.61 457564 0.00 0.00
curl_multi_socket_action
0.67 75.46 0.58 118616 0.00 0.00
curl_multi_remove_handle
0.58 75.97 0.51 8211502 0.00 0.00
client_tracing_function
0.53 76.43 0.46 733561 0.00 0.00 Curl_readwrite
0.51 76.87 0.44 2183179 0.00 0.00 multi_runsingle
0.51 77.31 0.44 166585567 0.00 0.00 addbyter
0.44 77.69 0.38 2175805 0.00 0.00 Curl_raw_equal
0.43 78.06 0.38 id_function
0.40 78.41 0.35 29789346 0.00 0.00 Curl_socket_check
0.40 78.76 0.35 479671 0.00 0.00 ossl_connect_common
0.40 79.11 0.35 490639 0.00 0.00 ares__init_list_node
0.33 79.40 0.29 94197670 0.00 0.00 Curl_raw_toupper
0.33 79.69 0.29 3268031 0.00 0.00 Curl_pgrsUpdate
0.28 79.93 0.24 8797 0.00 0.00 curl_multi_perform
0.27 80.17 0.24 2233641 0.00 0.00 Curl_infof
0.26 80.40 0.23 1839837 0.00 0.00 Curl_splay
0.24 80.61 0.21 121713028 0.00 0.00 curl_strequal
0.21 80.79 0.18 243333 0.00 0.00 Curl_ssl_getsessionid
0.18 80.95 0.16 122180 0.00 0.00 Curl_num_addresses
0.17 81.09 0.15 8271666 0.00 0.00 Curl_debug
0.16 81.23 0.14 18902452 0.00 0.00 alloc_addbyter
0.16 81.37 0.14 8851 0.00 0.00 curl_multi_socket_all
0.14 81.50 0.13 2236769 0.00 0.00 Curl_read
0.14 81.62 0.12 2271700 0.00 0.00 fd_key_compare
0.14 81.74 0.12 323167 0.00 0.00 event_del
0.14 81.86 0.12 205436 0.00 0.00 read_udp_packets
0.14 81.98 0.12 200979 0.00 0.00 processfds
0.13 82.09 0.11 123886 0.00 0.00
Curl_if_is_interface_name
0.13 82.20 0.11 120350 0.00 0.00 Curl_http
0.13 82.31 0.11 ssl_tls_trace
0.12 82.41 0.10 119229 0.00 0.00 Curl_splayremovebyaddr
0.12 82.51 0.10 7798717 0.00 0.00 Curl_raw_nequal
0.12 82.61 0.10 784485 0.00 0.00 event_add
0.10 82.70 0.09 643482 0.00 0.00 Curl_expire
*test 6:*
enable c-ares;
curl_easy_setopt (handle, CURLOPT_DNS_CACHE_TIMEOUT, 60);
CURL_VER:=7.24.0-20120109 -> CURL_VER:=7.23.0
dns server: dnsmasq@127.0.0.1, 2,000,000 dns entry cache, resolve *.com to
one IP address
number of domain names in URLs: 780,000
number of client: 1000
CPU usage: 86%
cpu% irq% sirq% sys% iowt% mem_used buf&cached
85.9 0.0 0.2 2.1 0.0 3537.2Mb 261.4Mb
SSL TPS: 360
SSL throughput: 200Mbps
# gprof /usr/bin/curl-loader gmon.out -p | head -20
Flat profile:
Each sample counts as 0.01 seconds.
% cumulative self self total
time seconds seconds calls s/call s/call name
27.19 19.96 19.96 103472 0.00 0.00
Curl_hash_clean_with_criterium
21.73 35.91 15.95 274168981 0.00 0.00
hostcache_timestamp_remove
10.33 43.49 7.58 2256441 0.00 0.00 Curl_hash_pick
7.21 48.78 5.29 104540 0.00 0.00 create_conn
6.20 53.33 4.55 103413405 0.00 0.00 Curl_str_key_compare
4.88 56.91 3.58 287109 0.00 0.00 Curl_hash_add
3.02 59.13 2.22 3797855 0.00 0.00 dprintf_formatf
2.10 60.67 1.54 107711 0.00 0.00 ConnectionStore
1.65 61.88 1.21 642725327 0.00 0.00 ares__is_list_empty
1.19 62.76 0.88 locking_function
0.87 63.40 0.64 207817 0.00 0.00 ares_cancel
0.56 63.81 0.41 404108 0.00 0.00
curl_multi_socket_action
0.54 64.21 0.40 425603 0.00 0.00 ares__init_list_node
0.53 64.60 0.39 7068112 0.00 0.00
client_tracing_function
0.49 64.96 0.36 1908587 0.00 0.00 multi_runsingle
*test 7:*
enable c-ares;
curl_easy_setopt (handle, CURLOPT_DNS_CACHE_TIMEOUT, -1);
CURL_VER:=7.24.0-20120109 -> CURL_VER:=7.23.0
dns server: dnsmasq@127.0.0.1, 2,000,000 dns entry cache, resolve *.com to
one IP address
number of domain names in URLs: 780,000
number of client: 1000
CPU usage: 86%
cpu% irq% sirq% sys% iowt% mem_used buf&cached
86.6 0.0 0.6 3.3 0.0 3624.8Mb 263.0Mb
SSL TPS: 300
SSL throughput: 200Mbps
# gprof /usr/bin/curl-loader gmon.out -p | head -20
Flat profile:
Each sample counts as 0.01 seconds.
% cumulative self self total
time seconds seconds calls s/call s/call name
39.83 369.71 369.71 207173 0.00 0.00
Curl_hash_clean_with_criterium
24.27 594.98 225.27 3198337733 0.00 0.00
hostcache_timestamp_remove
13.75 722.59 127.61 4312864 0.00 0.00 Curl_hash_pick
9.19 807.87 85.28 546507 0.00 0.00 Curl_hash_add
6.14 864.88 57.01 1022419684 0.00 0.00 Curl_str_key_compare
2.06 884.00 19.12 203749 0.00 0.00 create_conn
0.54 888.99 4.99 213306 0.00 0.00 ConnectionStore
0.49 893.50 4.51 7331251 0.00 0.00 dprintf_formatf
0.29 896.16 2.66 1287182329 0.00 0.00 ares__is_list_empty
0.23 898.28 2.12 locking_function
0.20 900.10 1.82 212210 0.00 0.00 Curl_num_addresses
0.17 901.66 1.56 198385 0.00 0.00
curl_multi_remove_handle
0.12 902.81 1.15 411114 0.00 0.00 ares_cancel
0.12 903.95 1.14 3683448 0.00 0.00 multi_runsingle
0.11 904.97 1.03 13664120 0.00 0.00
client_tracing_function
*test 8:*
enable c-ares;
curl_easy_setopt (handle, CURLOPT_DNS_CACHE_TIMEOUT, 60);
CURL_VER:=7.24.0-20120109 -> CURL_VER:=7.24.0
dns server: dnsmasq@127.0.0.1, 2,000,000 dns entry cache, resolve *.com to
one IP address
number of domain names in URLs: 780,000
number of client: 1000
CPU usage: 75%
cpu% irq% sirq% sys% iowt% mem_used buf&cached
75.2 0.0 0.2 2.1 0.0 3537.2Mb 261.4Mb
SSL TPS: 380
SSL throughput: 220Mbps
# gprof /usr/bin/curl-loader gmon.out -p | head -20
Flat profile:
Each sample counts as 0.01 seconds.
% cumulative self self total
time seconds seconds calls s/call s/call name
27.58 12.31 12.31 71140 0.00 0.00
Curl_hash_clean_with_criterium
19.09 20.83 8.52 176729692 0.00 0.00
hostcache_timestamp_remove
10.44 25.49 4.66 1589309 0.00 0.00 Curl_hash_pick
6.85 28.55 3.06 73204 0.00 0.00 create_conn
5.56 31.03 2.48 67620530 0.00 0.00 Curl_str_key_compare
4.41 33.00 1.97 200684 0.00 0.00 Curl_hash_add
3.56 34.59 1.59 2717956 0.00 0.00 dprintf_formatf
1.72 35.36 0.77 75247 0.00 0.00 ConnectionStore
1.70 36.12 0.76 444342256 0.00 0.00 ares__is_list_empty
1.23 36.67 0.55 locking_function
1.16 37.19 0.52 143342 0.00 0.00 ares_cancel
0.99 37.63 0.44 72211 0.00 0.00
curl_multi_remove_handle
0.74 37.96 0.33 1333371 0.00 0.00 multi_runsingle
0.68 38.27 0.31 101147798 0.00 0.00 addbyter
0.58 38.53 0.26 288737 0.00 0.00
curl_multi_socket_action
*test 9:*
enable c-ares;
curl_easy_setopt (handle, CURLOPT_DNS_CACHE_TIMEOUT, -1);
CURL_VER:=7.24.0-20120109 -> CURL_VER:=7.24.0
dns server: dnsmasq@127.0.0.1, 2,000,000 dns entry cache, resolve *.com to
one IP address
number of domain names in URLs: 780,000
number of client: 1000
CPU usage: 75%
cpu% irq% sirq% sys% iowt% mem_used buf&cached
75.1 0.0 0.6 4.1 0.0 3545.2Mb 260.1Mb
SSL TPS: 380
SSL throughput: 200Mbps
# gprof /usr/bin/curl-loader gmon.out -p | head -20
Flat profile:
Each sample counts as 0.01 seconds.
% cumulative self self total
time seconds seconds calls s/call s/call name
34.00 31.13 31.13 72495 0.00 0.00
Curl_hash_clean_with_criterium
23.64 52.78 21.65 386070412 0.00 0.00
hostcache_timestamp_remove
13.28 64.94 12.16 1619440 0.00 0.00 Curl_hash_pick
5.92 70.36 5.42 137653129 0.00 0.00 Curl_str_key_compare
5.50 75.40 5.04 203018 0.00 0.00 Curl_hash_add
4.55 79.57 4.17 74618 0.00 0.00 create_conn
1.70 81.13 1.56 2757148 0.00 0.00 dprintf_formatf
0.98 82.03 0.90 76945 0.00 0.00 ConnectionStore
0.95 82.90 0.87 455775100 0.00 0.00 ares__is_list_empty
0.57 83.42 0.53 locking_function
0.39 83.78 0.36 146742 0.00 0.00 ares_cancel
0.35 84.10 0.32 102968806 0.00 0.00 addbyter
0.35 84.42 0.32 456587 0.00 0.00 Curl_readwrite
0.35 84.74 0.32 73133 0.00 0.00
curl_multi_remove_handle
0.34 85.05 0.31 1360545 0.00 0.00 multi_runsingle
2012/3/6 Robert Iakobashvili <cor...@gm...>
> If it will not be helpful this means that recent
> changes in libcurl library have broken DNS interface.
>
> You can try a previos version and the latest libcurl, like:
>
> http://curl.haxx.se/download/curl-7.23.0.tar.gz
> and
> http://curl.haxx.se/downloadcurl-7.24.0.tar.gz
>
> by:
>
> 1. downloading a libcurl version and placing it to
> curl-loader-0.56/packages ;
> 2. correcting the Makefile in curl-loader-0.56
> CURL_VER:=7.24.0-20120109 -> CURL_VER:=7.24 or CURL_VER:=7.23
> 3. make cleanall; make
>
> Please, send us your observations.
> Thanks!
> Robert
>
> On Mon, Mar 5, 2012 at 6:57 PM, Robert Iakobashvili <cor...@gm...>
> wrote:
> > If so, please try to change
> >
> > loader.c, line 578 which looks like:
> > curl_easy_setopt (handle, CURLOPT_DNS_CACHE_TIMEOUT, -1);
> >
> > 1. instead of -1 try to set some value like 60
> > 2. make clean; make
> >
> > Thanks,
> > Robert
> >
> > On Mon, Mar 5, 2012 at 6:19 PM, Fred Huang <di...@gm...> wrote:
> >>
> >> Looks like the bottleneck comes from libcurl other than c-ares...
> >> test 3 (no ares patch applied):
> >> dns server: dnsmasq@127.0.0.1, 2,000,000 dns entry cache, resolve
> *.com to one IP address
> >> number of domain names in URLs: 780,000
> >> number of client: 1000
> >> CPU usage: 85%
> >> cpu% irq% sirq% sys% iowt% mem_used buf&cached
> >> 85.6 0.0 0.8 5.9 0.0 3334.3Mb 112.0Mb
> >> SSL TPS: 320
> >> SSL throughput: 200Mbps
> >>
> >> # gprof /usr/bin/curl-loader gmon.out -p | head -50
> >> Flat profile:
> >> Each sample counts as 0.01 seconds.
> >> % cumulative self self total
> >> time seconds seconds calls s/call s/call name
> >> 40.80 120.16 120.16 116079 0.00 0.00
> Curl_hash_clean_with_criterium
> >> 24.46 192.18 72.02 983166323 0.00 0.00
> hostcache_timestamp_remove
> >> 13.30 231.35 39.17 2059341 0.00 0.00 Curl_hash_pick
> >> 6.45 250.35 19.00 240087 0.00 0.00 Curl_hash_add
> >> 4.81 264.51 14.16 334257102 0.00 0.00
> Curl_str_key_compare
> >> 3.40 274.52 10.01 119514 0.00 0.00 create_conn
> >> 0.93 277.25 2.73 4478910 0.00 0.00 dprintf_formatf
> >> 0.90 279.91 2.66 122209 0.00 0.00 ConnectionStore
> >> 0.40 281.09 1.18 locking_function
> >> 0.27 281.88 0.79 114759 0.00 0.00
> curl_multi_remove_handle
> >> 0.21 282.51 0.63 7993664 0.00 0.00
> client_tracing_function
> >> 0.21 283.12 0.61 122685 0.00 0.00 Curl_num_addresses
> >> 0.19 283.68 0.56 397028 0.00 0.00
> curl_multi_socket_action
> >> 0.19 284.23 0.55 2036116 0.00 0.00 multi_runsingle
> >> 0.17 284.72 0.49 703687 0.00 0.00 Curl_readwrite
> >> 0.16 285.19 0.47 id_function
> >> 0.15 285.62 0.43 29692029 0.00 0.00 Curl_socket_check
> >> 0.14 286.02 0.40 91973856 0.00 0.00 Curl_raw_toupper
> >> 0.13 286.40 0.38 164664144 0.00 0.00 addbyter
> >> 0.13 286.77 0.37 2180797 0.00 0.00 Curl_infof
> >> 0.11 287.10 0.33 122675 0.00 0.00
> Curl_if_is_interface_name
> >> 0.10 287.39 0.29 471318 0.00 0.00
> ossl_connect_common
> >> 0.10 287.67 0.28 2113528 0.00 0.00 Curl_raw_equal
> >> 0.09 287.93 0.26 8676 0.00 0.02
> curl_multi_socket_all
> >> 0.08 288.17 0.24 1663262 0.00 0.00 Curl_splay
> >> 0.08 288.41 0.24 8505 0.00 0.01 curl_multi_perform
> >> 0.07 288.63 0.22 3114576 0.00 0.00 Curl_pgrsUpdate
> >> 0.06 288.80 0.17 119637 0.00 0.00 singleipconnect
> >> 0.06 288.97 0.17 7994818 0.00 0.00 Curl_debug
> >> 0.05 289.13 0.16 235820 0.00 0.00 event_del
> >> 0.05 289.29 0.16 119393071 0.00 0.00 curl_strequal
> >> 0.05 289.45 0.16 18535473 0.00 0.00 alloc_addbyter
> >> 0.05 289.61 0.16 356074 0.00 0.00 Curl_hash_str
> >> 0.05 289.76 0.15 1797233 0.00 0.00 fd_key_compare
> >> 0.05 289.91 0.15 234966 0.00 0.00
> Curl_ssl_getsessionid
> >> 0.04 290.04 0.13 585853 0.00 0.00 Curl_llist_destroy
> >> 0.04 290.16 0.12 240826 0.00 0.00 Curl_resolv
> >> 0.03 290.26 0.10 7514328 0.00 0.00 Curl_raw_nequal
> >> 0.03 290.36 0.10 2214436 0.00 0.00 Curl_read
> >> 0.03 290.46 0.10 116872 0.00 0.00
> Curl_http_readwrite_headers
> >> 0.03 290.56 0.10 ssl_tls_trace
> >> 0.03 290.66 0.10 8013097 0.00 0.00 scan_response
> >> 0.03 290.75 0.09 29488555 0.00 0.00 curlx_tvdiff
> >> 0.03 290.84 0.09 2142468 0.00 0.00 Curl_setopt
> >> 0.03 290.93 0.09 476299 0.00 0.00 Curl_expire
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> 2012/3/5 Robert Iakobashvili <cor...@gm...>
> >>>
> >>> Dear Fred Huang,
> >>>
> >>> Thanks for your posting.
> >>>
> >>> Could you please check if this is due to some badness at cares?
> >>> Thanks.
> >>>
> >>> Let's exclude usage of cares based DNS resolving by applying the patch
> attached
> >>> and use instead global DNS cache.
> >>>
> >>> cd ./curl-loader-0.56
> >>> patch -p1 < path-to/disable-cares-use-global-dns.patch
> >>> make cleanall; make
> >>>
> >>> See if it helps.
> >>>
> >>> Global cache, unfortunately, is not thread safe.
> >>>
> >>> If it helps, we'll try to restore the previous version of cares.
> >>>
> >>> Thanks,
> >>> Robert
> >>>
> >>> On Mon, Mar 5, 2012 at 4:28 PM, Fred Huang <di...@gm...> wrote:
> >>>>
> >>>> test 1:
> >>>>
> >>>> dns server: dnsmasq@127.0.0.1, 2,000,000 dns entry cache, resolve
> *.com to one IP address
> >>>> number of domain names in all https URLs: 780,000
> >>>> number of client: 1000
> >>>> CPU usage: 78%
> >>>> cpu% irq% sirq% sys% iowt% mem_used buf&cached
> >>>> 78.8 0.0 0.6 3.8 0.0 3640.9Mb 282.1Mb
> >>>> SSL TPS: 300
> >>>> SSL throughput: 200Mbps
> >>>>
> >>>> # gprof /usr/bin/curl-loader gmon.out -p | head -50
> >>>> Flat profile:
> >>>> Each sample counts as 0.01 seconds.
> >>>> % cumulative self self total
> >>>> time seconds seconds calls s/call s/call name
> >>>> 38.55 127.10 127.10 130975 0.00 0.00
> Curl_hash_clean_with_criterium
> >>>> 24.63 208.32 81.22 1247528407 0.00 0.00
> hostcache_timestamp_remove
> >>>> 13.08 251.44 43.12 2791988 0.00 0.00 Curl_hash_pick
> >>>> 7.30 275.51 24.07 352490 0.00 0.00 Curl_hash_add
> >>>> 6.01 295.31 19.80 410760770 0.00 0.00
> Curl_str_key_compare
> >>>> 2.95 305.04 9.73 131015 0.00 0.00 create_conn
> >>>> 0.88 307.94 2.90 4841390 0.00 0.00 dprintf_formatf
> >>>> 0.74 310.38 2.44 136036 0.00 0.00 ConnectionStore
> >>>> 0.48 311.96 1.58 814604911 0.00 0.00
> ares__is_list_empty
> >>>> 0.36 313.16 1.20 locking_function
> >>>> 0.27 314.06 0.90 261608 0.00 0.00 ares_cancel
> >>>> 0.22 314.79 0.73 127417 0.00 0.00
> curl_multi_remove_handle
> >>>> 0.19 315.40 0.62 8906301 0.00 0.00
> client_tracing_function
> >>>> 0.17 315.97 0.57 135305 0.00 0.00
> Curl_num_addresses
> >>>> 0.17 316.54 0.57 181937907 0.00 0.00 addbyter
> >>>> 0.17 317.09 0.55 2374363 0.00 0.00 multi_runsingle
> >>>> 0.16 317.62 0.53 541954 0.00 0.00
> ares__init_list_node
> >>>> 0.16 318.14 0.52 494412 0.00 0.00
> curl_multi_socket_action
> >>>> 0.14 318.60 0.46 33578897 0.00 0.00
> Curl_socket_check
> >>>> 0.13 319.04 0.44 102951052 0.00 0.00
> Curl_raw_toupper
> >>>> 0.13 319.48 0.44 787558 0.00 0.00 Curl_readwrite
> >>>> 0.13 319.91 0.44 id_function
> >>>> 0.12 320.29 0.38 391390 0.00 0.00 Curl_hash_str
> >>>> 0.09 320.58 0.29 9216 0.00 0.00
> curl_multi_perform
> >>>> 0.08 320.86 0.28 2350908 0.00 0.00 Curl_raw_equal
> >>>> 0.08 321.14 0.28 2019415 0.00 0.00 Curl_splay
> >>>> 0.08 321.40 0.26 520625 0.00 0.00
> ossl_connect_common
> >>>> 0.08 321.65 0.25 3532992 0.00 0.00 Curl_pgrsUpdate
> >>>> 0.07 321.87 0.22 131778537 0.00 0.00 curl_strequal
> >>>> 0.05 322.05 0.18 8954118 0.00 0.00 scan_response
> >>>> 0.05 322.23 0.18 533644 0.00 0.00 ares_expand_name
> >>>> 0.05 322.40 0.17 2477345 0.00 0.00 fd_key_compare
> >>>> 0.05 322.57 0.17 2429135 0.00 0.00 Curl_infof
> >>>> 0.05 322.74 0.17 130966 0.00 0.00 singleipconnect
> >>>> 0.05 322.90 0.16 9292 0.00 0.00
> curl_multi_socket_all
> >>>> 0.05 323.06 0.16 270137 0.00 0.00
> ares__get_hostent
> >>>> 0.05 323.21 0.15 8943657 0.00 0.00 Curl_debug
> >>>> 0.04 323.35 0.14 262493 0.00 0.00
> Curl_ssl_getsessionid
> >>>> 0.04 323.48 0.13 566006 0.00 0.00 socket_callback
> >>>> 0.04 323.61 0.13 33983864 0.00 0.00 curlx_tvdiff
> >>>> 0.04 323.74 0.13 132853 0.00 0.00
> Curl_http_readwrite_headers
> >>>> 0.04 323.86 0.12 344032 0.00 0.00 epoll_del
> >>>> 0.04 323.98 0.12 223477 0.00 0.00 Curl_poll
> >>>> 0.04 324.10 0.12 8526280 0.00 0.00 Curl_raw_nequal
> >>>> 0.03 324.21 0.11 348839 0.00 0.00 event_del
> >>>>
> >>>>
> >>>>
> >>>>
> >>>> test 2:
> >>>>
> >>>> dns server: dnsmasq@127.0.0.1, 2,000,000 dns entry cache, resolve
> *.com to one IP address
> >>>> number of domain names in all https URLs: 1
> >>>> number of client: 1000
> >>>> CPU usage: 75%
> >>>> SSL TPS: 1300
> >>>> SSL throughput: 700Mbps
> >>>>
> >>>> # gprof /usr/bin/curl-loader gmon.out -p | head -50
> >>>> Flat profile:
> >>>> Each sample counts as 0.01 seconds.
> >>>> % cumulative self self total
> >>>> time seconds seconds calls s/call s/call name
> >>>> 8.98 2.45 2.45 5127312 0.00 0.00 dprintf_formatf
> >>>> 8.90 4.88 2.43 1292796503 0.00 0.00
> ares__is_list_empty
> >>>> 6.12 6.55 1.67 322461 0.00 0.00 create_conn
> >>>> 4.58 7.80 1.25 419872 0.00 0.00 ares_cancel
> >>>> 4.10 8.92 1.12 2100162 0.00 0.00 Curl_readwrite
> >>>> 3.92 9.99 1.07 4527388 0.00 0.00 Curl_hash_pick
> >>>> 3.43 10.93 0.94 locking_function
> >>>> 3.04 11.76 0.83 909759 0.00 0.00
> curl_multi_socket_action
> >>>> 3.00 12.58 0.82 97252 0.00 0.00
> Curl_hash_clean_with_criterium
> >>>> 2.71 13.32 0.74 179704016 0.00 0.00
> Curl_raw_toupper
> >>>> 2.68 14.05 0.73 4646524 0.00 0.00 multi_runsingle
> >>>> 2.44 14.71 0.67 13862992 0.00 0.00
> client_tracing_function
> >>>> 2.42 15.37 0.66 319735 0.00 0.00
> curl_multi_remove_handle
> >>>> 2.42 16.03 0.66 22 0.03 0.03
> ares__init_list_node
> >>>> 1.94 16.56 0.53 9930244 0.00 0.00
> hostcache_timestamp_remove
> >>>> 1.94 17.09 0.53 169320088 0.00 0.00 addbyter
> >>>> 1.80 17.58 0.49 id_function
> >>>> 1.36 17.95 0.37 7057146 0.00 0.00 Curl_pgrsUpdate
> >>>> 1.36 18.32 0.37 16835 0.00 0.00
> curl_multi_socket_all
> >>>> 1.25 18.66 0.34 16719 0.00 0.00
> curl_multi_perform
> >>>> 1.21 18.99 0.33 329403 0.00 0.00
> Curl_http_readwrite_headers
> >>>> 1.17 19.31 0.32 4036624 0.00 0.00 Curl_splay
> >>>> 1.14 19.62 0.31 20838902 0.00 0.00 Curl_raw_nequal
> >>>> 0.82 19.85 0.23 2764123 0.00 0.00 Curl_infof
> >>>> 0.81 20.07 0.22 5933857 0.00 0.00 ossl_recv
> >>>> 0.77 20.28 0.21 323112 0.00 0.00
> Curl_splayremovebyaddr
> >>>> 0.75 20.48 0.21 5943991 0.00 0.00 Curl_read
> >>>> 0.70 20.67 0.19 425174 0.00 0.00 event_del
> >>>> 0.70 20.86 0.19 98652 0.00 0.00
> Curl_if_is_interface_name
> >>>> 0.70 21.05 0.19 8677733 0.00 0.00
> Curl_socket_check
> >>>> 0.59 21.21 0.16 4129554 0.00 0.00 fd_key_compare
> >>>> 0.57 21.37 0.16 14017019 0.00 0.00 Curl_debug
> >>>> 0.55 21.52 0.15 9376861 0.00 0.00 stat_data_in_add
> >>>> 0.55 21.67 0.15 6840468 0.00 0.00 Curl_timeleft
> >>>> 0.55 21.82 0.15 2054602 0.00 0.00 Curl_raw_equal
> >>>> 0.55 21.97 0.15 1291611 0.00 0.00 Curl_expire
> >>>> 0.51 22.11 0.14 16570063 0.00 0.00 curlx_tvnow
> >>>> 0.51 22.25 0.14 13863284 0.00 0.00 scan_response
> >>>> 0.51 22.39 0.14 5498864 0.00 0.00 Curl_setopt
> >>>> 0.48 22.52 0.13 97490291 0.00 0.00 curl_strequal
> >>>> 0.44 22.64 0.12 324253 0.00 0.00 Curl_http
> >>>> 0.44 22.76 0.12 394386 0.00 0.00
> ossl_connect_common
> >>>> 0.40 22.87 0.11 3581335 0.00 0.00 Curl_getinfo
> >>>> 0.38 22.97 0.11 26983092 0.00 0.00 alloc_addbyter
> >>>> 0.37 23.07 0.10 8729044 0.00 0.00
> Curl_client_write
> >>>>
> >>>>
> >>>>
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> Robert Iakobashvili, Ph.D.
>
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> ......................................................................
> Ghotit Dyslexia
> Assistive technology that understands you
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>
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