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List:       kde-bugs-dist
Subject:    [kscreenlocker] [Bug 347772] kscreenlocker_greet using 100% cpu on plasma 5
From:       <bugzilla_noreply () kde ! org>
Date:       2017-05-14 8:34:12
Message-ID: bug-347772-17878-zLxZo0Y2RQ () http ! bugs ! kde ! org/
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https://bugs.kde.org/show_bug.cgi?id=347772

--- Comment #21 from dag@newtech.fi ---
Here an extract of an strace of the bad screenlocker: 
[pid 12126] futex(0x5651d612b36c, FUTEX_WAIT_PRIVATE, 459831, NULL <unfinished
...>
[pid 12251] <... restart_syscall resumed> ) = -1 ETIMEDOUT (Connection timed
out)
[pid 12251] futex(0x7f0508252f98, FUTEX_WAKE_PRIVATE, 1) = 0
[pid 12251] clock_gettime(CLOCK_MONOTONIC, {tv_sec=1798396, tv_nsec=523409219})
= 0
[pid 12251] clock_gettime(CLOCK_MONOTONIC, {tv_sec=1798396, tv_nsec=523437825})
= 0
[pid 12251] futex(0x7f0500000a64,
FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 13051589, {tv_sec=1494750748,
tv_nsec=585611000}, 0xffffffff <unfinished ...>
[pid 12241] <... restart_syscall resumed> ) = -1 ETIMEDOUT (Connection timed
out)
[pid 12253] <... restart_syscall resumed> ) = -1 ETIMEDOUT (Connection timed
out)
[pid 12241] futex(0x5651d5c31338, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 12253] futex(0x7f0504253398, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 12241] <... futex resumed> )       = 0
[pid 12253] <... futex resumed> )       = 0
[pid 12241] clock_gettime(CLOCK_MONOTONIC,  <unfinished ...>
[pid 12253] clock_gettime(CLOCK_MONOTONIC,  <unfinished ...>
[pid 12241] <... clock_gettime resumed> {tv_sec=1798396, tv_nsec=531774677}) =
0
[pid 12253] <... clock_gettime resumed> {tv_sec=1798396, tv_nsec=531786416}) =
0
[pid 12241] clock_gettime(CLOCK_MONOTONIC,  <unfinished ...>
[pid 12253] clock_gettime(CLOCK_MONOTONIC,  <unfinished ...>
[pid 12241] <... clock_gettime resumed> {tv_sec=1798396, tv_nsec=531817216}) =
0
[pid 12253] <... clock_gettime resumed> {tv_sec=1798396, tv_nsec=531842134}) =
0
[pid 12241] futex(0x7f0520000a64,
FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 13714495, {tv_sec=1494750748,
tv_nsec=594006000}, 0xffffffff <unfinished ...>
[pid 12253] futex(0x7f04f8000a64,
FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 13712545, {tv_sec=1494750748,
tv_nsec=594021000}, 0xffffffff <unfinished ...>
[pid 12251] <... futex resumed> )       = -1 ETIMEDOUT (Connection timed out)
[pid 12251] futex(0x7f0508252f98, FUTEX_WAKE_PRIVATE, 1) = 0
[pid 12251] clock_gettime(CLOCK_MONOTONIC, {tv_sec=1798396, tv_nsec=623569800})
= 0
[pid 12251] clock_gettime(CLOCK_MONOTONIC, {tv_sec=1798396, tv_nsec=623596748})
= 0
[pid 12251] futex(0x7f0500000a64,
FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 13051591, {tv_sec=1494750748,
tv_nsec=685769000}, 0xffffffff <unfinished ...>
[pid 12241] <... futex resumed> )       = -1 ETIMEDOUT (Connection timed out)
[pid 12253] <... futex resumed> )       = -1 ETIMEDOUT (Connection timed out)
[pid 12241] futex(0x5651d5c31338, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 12253] futex(0x7f0504253398, FUTEX_WAKE_PRIVATE, 1 <unfinished ...>
[pid 12241] <... futex resumed> )       = 0
[pid 12253] <... futex resumed> )       = 0
[pid 12241] clock_gettime(CLOCK_MONOTONIC,  <unfinished ...>
[pid 12253] clock_gettime(CLOCK_MONOTONIC,  <unfinished ...>
[pid 12241] <... clock_gettime resumed> {tv_sec=1798396, tv_nsec=631951238}) =
0
[pid 12253] <... clock_gettime resumed> {tv_sec=1798396, tv_nsec=631957635}) =
0
[pid 12241] clock_gettime(CLOCK_MONOTONIC,  <unfinished ...>
[pid 12253] clock_gettime(CLOCK_MONOTONIC,  <unfinished ...>
[pid 12241] <... clock_gettime resumed> {tv_sec=1798396, tv_nsec=631981719}) =
0
[pid 12253] <... clock_gettime resumed> {tv_sec=1798396, tv_nsec=631988158}) =
0
[pid 12241] futex(0x7f0520000a64,
FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 13714497, {tv_sec=1494750748,
tv_nsec=694161000}, 0xffffffff <unfinished ...>
[pid 12253] futex(0x7f04f8000a64,
FUTEX_WAIT_BITSET_PRIVATE|FUTEX_CLOCK_REALTIME, 13712547, {tv_sec=1494750748,
tv_nsec=694177000}, 0xffffffff <unfinished ...>
[pid 12251] <... futex resumed> )       = -1 ETIMEDOUT (Connection timed out)

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