Percona-XtraDB

process lock on start results in db failure

Bug #1646849 reported by paullush
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Percona-XtraDB
New
Undecided
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Bug Description

I've installed Percona Server 5.7.16-10 and imported a lot of DBs

The filesystem is XFS to allow for online growth, never had a problem with it before. The OS is Ubuntu 14.04.5 LTS.. Date/time are correct on slave/master

8 CPU, 28GB ram in Azure

processor : 7
vendor_id : GenuineIntel
cpu family : 6
model : 63
model name : Intel(R) Xeon(R) CPU E5-2673 v3 @ 2.40GHz
stepping : 2
microcode : 0xffffffff
cpu MHz : 2397.211
cache size : 30720 KB
physical id : 0
siblings : 8
core id : 7
cpu cores : 8
apicid : 7
initial apicid : 7
fpu : yes
fpu_exception : yes
cpuid level : 13
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx lm constant_tsc rep_good nopl eagerfpu pni pclmulqdq ssse3 fma cx16 sse4_1 sse4_2 movbe popcnt aes xsave avx f16c rdrand hypervisor lahf_lm abm fsgsbase bmi1 avx2 smep bmi2 erms xsaveopt
bugs :
bogomips : 4794.42
clflush size : 64
cache_alignment : 64
address sizes : 42 bits physical, 48 bits virtual
power management:

strace log

[pid 5202] open("./domain_286889/FTS_000000000020cb3c_0000000000366a0d_INDEX_3.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/FTS_000000000020cb3c_0000000000366a0d_INDEX_3.ibd", O_RDONLY) = 12
[pid 5202] open("./domain_286889/FTS_000000000020cb3c_0000000000366a0d_INDEX_4.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/FTS_000000000020cb3c_0000000000366a0d_INDEX_4.ibd", O_RDONLY) = 12
[pid 5202] open("./domain_286889/FTS_000000000020cb3c_0000000000366a0d_INDEX_5.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/FTS_000000000020cb3c_0000000000366a0d_INDEX_5.ibd", O_RDONLY) = 12
[pid 5202] open("./domain_286889/FTS_000000000020cb3c_0000000000366a0d_INDEX_6.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/FTS_000000000020cb3c_0000000000366a0d_INDEX_6.ibd", O_RDONLY) = 12
[pid 5202] open("./domain_286889/FTS_000000000020cb3c_BEING_DELETED.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/FTS_000000000020cb3c_BEING_DELETED.ibd", O_RDONLY) = 12
[pid 5202] open("./domain_286889/FTS_000000000020cb3c_BEING_DELETED_CACHE.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/FTS_000000000020cb3c_BEING_DELETED_CACHE.ibd", O_RDONLY) = 12
[pid 5202] open("./domain_286889/FTS_000000000020cb3c_CONFIG.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/FTS_000000000020cb3c_CONFIG.ibd", O_RDONLY) = 12
[pid 5202] open("./domain_286889/FTS_000000000020cb3c_DELETED.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/FTS_000000000020cb3c_DELETED.ibd", O_RDONLY) = 12
[pid 5202] open("./domain_286889/FTS_000000000020cb3c_DELETED_CACHE.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/FTS_000000000020cb3c_DELETED_CACHE.ibd", O_RDONLY) = 12
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_0000000000366a4d_INDEX_1.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_0000000000366a4d_INDEX_1.ibd", O_RDONLY) = 12
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_0000000000366a4d_INDEX_2.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_0000000000366a4d_INDEX_2.ibd", O_RDONLY) = 12
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_0000000000366a4d_INDEX_3.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_0000000000366a4d_INDEX_3.ibd", O_RDONLY) = 12
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_0000000000366a4d_INDEX_4.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_0000000000366a4d_INDEX_4.ibd", O_RDONLY) = 12
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_0000000000366a4d_INDEX_5.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_0000000000366a4d_INDEX_5.ibd", O_RDONLY) = 12
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_0000000000366a4d_INDEX_6.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_0000000000366a4d_INDEX_6.ibd", O_RDONLY) = 12
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_BEING_DELETED.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_BEING_DELETED.ibd", O_RDONLY) = 12
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_BEING_DELETED_CACHE.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_BEING_DELETED_CACHE.ibd", O_RDONLY) = 12
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_CONFIG.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_CONFIG.ibd", O_RDONLY) = 12
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_DELETED.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_DELETED.ibd", O_RDONLY) = 12
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_DELETED_CACHE.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/FTS_000000000020cb5d_DELETED_CACHE.ibd", O_RDONLY) = 12
[pid 5202] open("./domain_286889/access_boxusers.isl", O_RDWR) = -1 ENOENT (No such file or directory)
[pid 5202] open("./domain_286889/access_boxusers.ibd", O_RDONLY) = 12

[ no more progress here ]

when running strace -f -p pid you see this repeated with no further progress into open/scanning or processing, and CPU drops. The first 8000 databases scan very quickly then speed drops suddenly before dropping to a file op/sec, then nothing beyond the line last above

After the process stops opening files, the strace for the pid is as low, repeated. (the pid differs but the content ie *exactly* the same)

[pid 55080] <... gettimeofday resumed> {1480683333, 879871}, NULL) = 0
[pid 55080] nanosleep({0, 999000000}, <unfinished ...>
[pid 55067] <... nanosleep resumed> NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 1000}, NULL) = 0
[pid 55067] nanosleep({0, 2000}, NULL) = 0
[pid 55067] nanosleep({0, 4000}, NULL) = 0
[pid 55067] nanosleep({0, 8000}, NULL) = 0
[pid 55067] nanosleep({0, 16000}, NULL) = 0
[pid 55067] nanosleep({0, 32000}, NULL) = 0
[pid 55067] nanosleep({0, 64000}, NULL) = 0
[pid 55067] nanosleep({0, 128000}, NULL) = 0
[pid 55067] nanosleep({0, 256000}, NULL) = 0
[pid 55067] nanosleep({0, 512000}, NULL) = 0
[pid 55067] nanosleep({0, 1024000}, NULL) = 0
[pid 55067] nanosleep({0, 2048000}, NULL) = 0
[pid 55067] nanosleep({0, 4096000}, NULL) = 0
[pid 55067] nanosleep({0, 8192000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 1000}, NULL) = 0
[pid 55067] nanosleep({0, 2000}, NULL) = 0
[pid 55067] nanosleep({0, 4000}, NULL) = 0
[pid 55067] nanosleep({0, 8000}, NULL) = 0
[pid 55067] nanosleep({0, 16000}, NULL) = 0
[pid 55067] nanosleep({0, 32000}, NULL) = 0
[pid 55067] nanosleep({0, 64000}, NULL) = 0
[pid 55067] nanosleep({0, 128000}, NULL) = 0
[pid 55067] nanosleep({0, 256000}, NULL) = 0
[pid 55067] nanosleep({0, 512000}, NULL) = 0
[pid 55067] nanosleep({0, 1024000}, NULL) = 0
[pid 55067] nanosleep({0, 2048000}, NULL) = 0
[pid 55067] nanosleep({0, 4096000}, NULL) = 0
[pid 55067] nanosleep({0, 8192000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, <unfinished ...>
[pid 55077] <... io_getevents resumed> {}{0, 500000000}) = 0
[pid 55077] io_getevents(139699023204352, 1, 256, <unfinished ...>
[pid 55078] <... io_getevents resumed> {}{0, 500000000}) = 0
[pid 55078] io_getevents(139699023183872, 1, 256, <unfinished ...>
[pid 55076] <... io_getevents resumed> {}{0, 500000000}) = 0
[pid 55076] io_getevents(139699023224832, 1, 256, <unfinished ...>
[pid 55075] <... io_getevents resumed> {}{0, 500000000}) = 0
[pid 55075] io_getevents(139699023245312, 1, 256, <unfinished ...>
[pid 55074] <... io_getevents resumed> {}{0, 500000000}) = 0
[pid 55074] io_getevents(139699023572992, 1, 256, <unfinished ...>
[pid 55073] <... io_getevents resumed> {}{0, 500000000}) = 0
[pid 55073] io_getevents(139699023593472, 1, 256, <unfinished ...>
[pid 55072] <... io_getevents resumed> {}{0, 500000000}) = 0
[pid 55072] io_getevents(139699023613952, 1, 256, <unfinished ...>
[pid 55071] <... io_getevents resumed> {}{0, 500000000}) = 0
[pid 55071] io_getevents(139699023634432, 1, 256, <unfinished ...>
[pid 55070] <... io_getevents resumed> {}{0, 500000000}) = 0
[pid 55070] io_getevents(139699023532032, 1, 256, <unfinished ...>
[pid 55069] <... io_getevents resumed> {}{0, 500000000}) = 0
[pid 55069] io_getevents(139699023552512, 1, 256, <unfinished ...>
[pid 55067] <... nanosleep resumed> NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 1000}, NULL) = 0
[pid 55067] nanosleep({0, 2000}, NULL) = 0
[pid 55067] nanosleep({0, 4000}, NULL) = 0
[pid 55067] nanosleep({0, 8000}, NULL) = 0
[pid 55067] nanosleep({0, 16000}, NULL) = 0
[pid 55067] nanosleep({0, 32000}, NULL) = 0
[pid 55067] nanosleep({0, 64000}, NULL) = 0
[pid 55067] nanosleep({0, 128000}, NULL) = 0
[pid 55067] nanosleep({0, 256000}, NULL) = 0
[pid 55067] nanosleep({0, 512000}, NULL) = 0
[pid 55067] nanosleep({0, 1024000}, NULL) = 0
[pid 55067] nanosleep({0, 2048000}, NULL) = 0
[pid 55067] nanosleep({0, 4096000}, NULL) = 0
[pid 55067] nanosleep({0, 8192000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0
[pid 55067] nanosleep({0, 10000000}, NULL) = 0

The DB loads in recovery mode 4,5,6 but not 3.

sysctl.conf

fs.file-max = 20000000
net.ipv4.tcp_fin_timeout = 10
kernel.pid_max = 65535
kernel.randomize_va_space = 1
net.core.netdev_max_backlog=32768
net.core.rmem_max = 8388608
net.core.somaxconn = 16384
net.core.wmem_max = 8388608
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.all.accept_source_route = 0
net.ipv4.conf.all.log_martians = 1
net.ipv4.conf.all.rp_filter = 1
net.ipv4.conf.all.secure_redirects = 0
net.ipv4.conf.default.accept_redirects = 0
net.ipv4.conf.default.accept_source_route = 0
net.ipv4.conf.default.log_martians = 1
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.secure_redirects = 0
net.ipv4.icmp_echo_ignore_broadcasts = 1
net.ipv4.icmp_ignore_bogus_error_responses = 1
net.ipv4.ip_forward=0
net.ipv4.ip_local_port_range = 2000 65000
net.ipv4.tcp_max_syn_backlog=8192
net.ipv4.tcp_rmem = 4096 87380 8388608
net.ipv4.tcp_syncookies=0
net.ipv4.tcp_syncookies = 0
net.ipv4.tcp_tw_recycle = 0
net.ipv4.tcp_tw_reuse = 0
net.ipv4.tcp_window_scaling = 1
net.ipv4.tcp_wmem = 4096 87380 8388608
vm.overcommit_memory = 1
vm.swappiness = 0
fs.aio-max-nr = 500000

limits.conf

mysql soft nofile 150000
mysql hard nofile 200000

the error.log file is a non-stop flow of these

2016-12-02T14:01:57.234778Z 32 [ERROR] InnoDB: Your database may be corrupt or you may have copied the InnoDB tablespace but not the InnoDB log files. Please refer to http://dev.mysql.com/doc/refman/5.7/en/forcing-innodb-recovery.html for information about forcing recovery.
2016-12-02T14:01:57.235077Z 32 [ERROR] InnoDB: Page [page id: space=959931, page number=79840] log sequence number 31707022572 is in the future! Current system log sequence number 8223.
2016-12-02T14:01:57.235082Z 32 [ERROR] InnoDB: Your database may be corrupt or you may have copied the InnoDB tablespace but not the InnoDB log files. Please refer to http://dev.mysql.com/doc/refman/5.7/en/forcing-innodb-recovery.html for information about forcing recovery.
2016-12-02T14:01:57.235487Z 32 [ERROR] InnoDB: Page [page id: space=959931, page number=79855] log sequence number 31707020620 is in the future! Current system log sequence number 8223.
2016-12-02T14:01:57.235491Z 32 [ERROR] InnoDB: Your database may be corrupt or you may have copied the InnoDB tablespace but not the InnoDB log files. Please refer to http://dev.mysql.com/doc/refman/5.7/en/forcing-innodb-recovery.html for information about forcing recovery.
2016-12-02T14:01:57.235852Z 32 [ERROR] InnoDB: Page [page id: space=959931, page number=79847] log sequence number 31707016742 is in the future! Current system log sequence number 8223.
2016-12-02T14:01:57.235856Z 32 [ERROR] InnoDB: Your database may be corrupt or you may have copied the InnoDB tablespace but not the InnoDB log files. Please refer to http://dev.mysql.com/doc/refman/5.7/en/forcing-innodb-recovery.html for information about forcing recovery.
2016-12-02T14:01:57.236269Z 32 [ERROR] InnoDB: Page [page id: space=959931, page number=79856] log sequence number 31707020951 is in the future! Current system log sequence number 8223.
2016-12-02T14:01:57.236274Z 32 [ERROR] InnoDB: Your database may be corrupt or you may have copied the InnoDB tablespace but not the InnoDB log files. Please refer to http://dev.mysql.com/doc/refman/5.7/en/forcing-innodb-recovery.html for information about forcing recovery.
2016-12-02T14:01:57.236654Z 32 [ERROR] InnoDB: Page [page id: space=959931, page number=79843] log sequence number 31707064015 is in the future! Current system log sequence number 8223.

mysqld.conf

[mysqld]
user = mysql
pid-file = /var/run/mysqld/mysqld.pid
socket = /var/run/mysqld/mysqld.sock
port = 3306
basedir = /usr
datadir = /var/lib/mysql
tmpdir = /tmp
lc-messages-dir = /usr/share/mysql
explicit_defaults_for_timestamp
max_connections=4096
wait_timeout=5
interactive_timeout=120
myisam_sort_buffer_size=1024M
sort_buffer_size=1024M
innodb_file_per_table=ON
skip-name-resolve
default-storage-engine=InnoDB
max_allowed_packet=64M
expire_logs_days = 3
server-id = 7
innodb_data_file_path = ibdata1:10M:autoextend
innodb_flush_method = O_DIRECT
innodb_file_per_table
bind-address = 0.0.0.0
log-error = /var/log/mysql/error.log
log_error_verbosity=3
#sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_ALL_TABLES
sql_mode=""
symbolic-links=0
lower_case_table_names = 1
master-info-repository=TABLE
relay-log-info-repository=TABLE
replicate-do-table = account.identity_data
replicate-do-table = account.signature_data
replicate-do-table = account.account_usertypes
replicate-do-table = account.banned_words
replicate-wild-do-table = forum\_skeleton.%
replicate-wild-do-table = domain\_%.%
replicate-wild-do-table = user\_cluster\_%.%
slave-skip-errors = 1062
open-files-limit=150000
myisam-recover-options=FORCE,BACKUP
innodb_force_recovery=4
innodb_purge_threads=0

Revision history for this message
paullush (paullush-8) wrote :

Should have added that this happened on two servers at the same time, both slaves to the same master.

paullush (paullush-8)
affects: percona-xtradb-cluster → percona-xtradb
Revision history for this message
paullush (paullush-8) wrote :
Download full text (4.5 KiB)

With aio=0 set, the strace, once all file scan operations finally slow down, are as below

90] nanosleep({0, 64000}, NULL) = 0
[pid 3490] nanosleep({0, 128000}, NULL) = 0
[pid 3490] nanosleep({0, 256000}, NULL) = 0
[pid 3490] nanosleep({0, 512000}, NULL) = 0
[pid 3490] nanosleep({0, 1024000}, NULL) = 0
[pid 3490] nanosleep({0, 2048000}, NULL) = 0
[pid 3490] nanosleep({0, 4096000}, NULL) = 0
[pid 3490] nanosleep({0, 8192000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 1000}, NULL) = 0
[pid 3490] nanosleep({0, 2000}, NULL) = 0
[pid 3490] nanosleep({0, 4000}, NULL) = 0
[pid 3490] nanosleep({0, 8000}, NULL) = 0
[pid 3490] nanosleep({0, 16000}, NULL) = 0
[pid 3490] nanosleep({0, 32000}, NULL) = 0
[pid 3490] nanosleep({0, 64000}, NULL) = 0
[pid 3490] nanosleep({0, 128000}, NULL) = 0
[pid 3490] nanosleep({0, 256000}, NULL) = 0
[pid 3490] nanosleep({0, 512000}, NULL) = 0
[pid 3490] nanosleep({0, 1024000}, NULL) = 0
[pid 3490] nanosleep({0, 2048000}, <unfinished ...>
[pid 3503] <... nanosleep resumed> NULL) = 0
[pid 3503] gettimeofday({1480724551, 85181}, NULL) = 0
[pid 3503] gettimeofday({1480724551, 86450}, NULL) = 0
[pid 3503] nanosleep({0, 999000000}, <unfinished ...>
[pid 3490] <... nanosleep resumed> NULL) = 0
[pid 3490] nanosleep({0, 4096000}, NULL) = 0
[pid 3490] nanosleep({0, 8192000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 10000000}, NULL) = 0
[pid 3490] nanosleep({0, 1000}, NULL) = 0
[pid 3490] nanosleep({0, 2000}, NULL) = 0
[pid 3490] nanosleep({0, 4000}, NULL) = 0
[pid 3490] nanosleep({0, 8000}, NU...

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