[tor-bugs] #24127 [Core Tor/Tor]: Profile a 0.3.2.x fast relay

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#24127: Profile a 0.3.2.x fast relay
--+--
 Reporter:  dgoulet   |  Owner:  dgoulet
 Type:  task  | Status:  assigned
 Priority:  Medium|  Milestone:  Tor: 0.3.2.x-final
Component:  Core Tor/Tor  |Version:
 Severity:  Normal|   Keywords:  tor-relay, profiling
Actual Points:|  Parent ID:
   Points:|   Reviewer:
  Sponsor:|
--+--
 Following #23722, this is to try to learn if we have any regression or
 obvious performance issue from profiling in 032.

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Re: [tor-bugs] #24127 [Core Tor/Tor]: Profile a 0.3.2.x fast relay

[Tor Bug Tracker & Wiki]

#24127: Profile a 0.3.2.x fast relay
-+-
 Reporter:  dgoulet  |  Owner:  dgoulet
 Type:  task | Status:  closed
 Priority:  Medium   |  Milestone:  Tor:
 |  0.3.4.x-final
Component:  Core Tor/Tor |Version:
 Severity:  Normal   | Resolution:  fixed
 Keywords:  tor-relay, profiling,|  Actual Points:
  034-triage-20180328, 034-removed-20180328  |
Parent ID:   | Points:
 Reviewer:   |Sponsor:
-+-
Changes (by dgoulet):

 * status:  assigned => closed
 * resolution:   => fixed


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Re: [tor-bugs] #24127 [Core Tor/Tor]: Profile a 0.3.2.x fast relay

[Tor Bug Tracker & Wiki]

#24127: Profile a 0.3.2.x fast relay
--+
 Reporter:  dgoulet   |  Owner:  dgoulet
 Type:  task  | Status:  assigned
 Priority:  Medium|  Milestone:  Tor: 0.3.2.x-final
Component:  Core Tor/Tor  |Version:
 Severity:  Normal| Resolution:
 Keywords:  tor-relay, profiling  |  Actual Points:
Parent ID:| Points:
 Reviewer:|Sponsor:
--+

Comment (by dgoulet):

 After 3 hours of profiling a fast Exit relay on 032:

 {{{
2.33%  tor  tor[.] connection_bucket_refill
1.73%  tor  tor[.] curve25519_donna
1.43%  tor  [kernel.kallsyms]  [k] irq_entries_start
0.97%  tor  [kernel.kallsyms]  [k] copy_user_generic_string
0.92%  tor  [kernel.kallsyms]  [k] __fget
0.91%  tor  tor[.] circuit_receive_relay_cell
0.87%  tor  libc-2.24.so   [.] malloc
0.76%  tor  libevent-2.0.so.5.1.9  [.] _init
0.75%  tor  tor[.] buf_datalen
0.70%  tor  [kernel.kallsyms]  [k] sys_epoll_ctl
0.65%  tor  libevent-2.0.so.5.1.9  [.] evmap_io_active
0.60%  tor  libevent-2.0.so.5.1.9  [.] event_base_loop
0.56%  tor  [kernel.kallsyms]  [k]
 __raw_callee_save___pv_queued_spin_unlock
0.55%  tor  tor[.]
 channel_flush_from_first_active_circuit
0.54%  tor  libc-2.24.so   [.] 0x00078d6a
0.52%  tor  [kernel.kallsyms]  [k] update_cfs_shares
0.51%  tor  tor[.] rep_hist_note_or_conn_bytes
0.51%  tor  [kernel.kallsyms]  [k] sock_poll
0.47%  tor  tor[.]
 circuit_get_by_circid_channel
0.46%  tor  tor[.] tor_memcmp
0.45%  tor  tor[.] assert_circuit_ok
0.43%  tor  tor[.] buf_assert_ok
0.42%  tor  [kernel.kallsyms]  [k] ipt_do_table
0.41%  tor  tor[.] smartlist_contains
0.41%  tor  libcrypto.so.1.1   [.] CRYPTO_ctr128_encrypt_ctr32
 }}}

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Re: [tor-bugs] #24127 [Core Tor/Tor]: Profile a 0.3.2.x fast relay

[Tor Bug Tracker & Wiki]

#24127: Profile a 0.3.2.x fast relay
--+
 Reporter:  dgoulet   |  Owner:  dgoulet
 Type:  task  | Status:  assigned
 Priority:  Medium|  Milestone:  Tor: 0.3.2.x-final
Component:  Core Tor/Tor  |Version:
 Severity:  Normal| Resolution:
 Keywords:  tor-relay, profiling  |  Actual Points:
Parent ID:| Points:
 Reviewer:|Sponsor:
--+

Comment (by dgoulet):

 Nothing too crazy about those results imo.

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Re: [tor-bugs] #24127 [Core Tor/Tor]: Profile a 0.3.2.x fast relay

[Tor Bug Tracker & Wiki]

#24127: Profile a 0.3.2.x fast relay
--+
 Reporter:  dgoulet   |  Owner:  dgoulet
 Type:  task  | Status:  assigned
 Priority:  Medium|  Milestone:  Tor: 0.3.2.x-final
Component:  Core Tor/Tor  |Version:
 Severity:  Normal| Resolution:
 Keywords:  tor-relay, profiling  |  Actual Points:
Parent ID:| Points:
 Reviewer:|Sponsor:
--+

Comment (by nickm):

 Is that a fast relay that was relaying a lot of traffic at the time?  Or
 was it ramping up?

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Re: [tor-bugs] #24127 [Core Tor/Tor]: Profile a 0.3.2.x fast relay

[Tor Bug Tracker & Wiki]

#24127: Profile a 0.3.2.x fast relay
--+
 Reporter:  dgoulet   |  Owner:  dgoulet
 Type:  task  | Status:  assigned
 Priority:  Medium|  Milestone:  Tor: 0.3.2.x-final
Component:  Core Tor/Tor  |Version:
 Severity:  Normal| Resolution:
 Keywords:  tor-relay, profiling  |  Actual Points:
Parent ID:| Points:
 Reviewer:|Sponsor:
--+

Comment (by dgoulet):

 Replying to [comment:3 nickm]:
 > Is that a fast relay that was relaying a lot of traffic at the time?  Or
 was it ramping up?

 Fast relaying fast at the time. It is:
 http://52g5y5karruvc7bz.onion/#details/FDAED15C98CFE7A416E5676F614254F78406105C

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Re: [tor-bugs] #24127 [Core Tor/Tor]: Profile a 0.3.2.x fast relay

[Tor Bug Tracker & Wiki]

#24127: Profile a 0.3.2.x fast relay
--+
 Reporter:  dgoulet   |  Owner:  dgoulet
 Type:  task  | Status:  assigned
 Priority:  Medium|  Milestone:  Tor: 0.3.2.x-final
Component:  Core Tor/Tor  |Version:
 Severity:  Normal| Resolution:
 Keywords:  tor-relay, profiling  |  Actual Points:
Parent ID:| Points:
 Reviewer:|Sponsor:
--+

Comment (by dgoulet):

 FYI, I'll do this again with our release candidate in December.

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