[xubuntu-users] Unexpected hard drive trashing
Václav Zeman
vhaisman at gmail.com
Sun Oct 21 11:30:30 UTC 2012
On 10/21/2012 11:07 AM, Václav Zeman wrote:
> Hi.
>
> On 10/20/2012 11:43 PM, Vincent Trouilliez wrote:
>> Hi there,
>>
>> I was using XUbuntu 12.04, now just upgraded to XUbuntu 12.10, first
>> via network update out of convenience, but noticed some problems and
>> regressions, so I re-installed it, this time using a physical CD-ROM
>> and erasing the System partition, but preserving my Home partition.
>> Unfortunately this did not improve a thing, so I am now posting here....
>>
>> One problem per post so here is one: hard drive trashing.
>>
>> [...]
>>
>> 3) The weirdest case is this third one though : launch the "Sudoku"
>> game that comes pre-installed with XUbuntu. Now grab the window bar
>> with the mouse and move around the window : so long as the window is
>> in motion, the hard drive is going nuts !
> I can reproduce this as well. I have tried to "debug" this and I think
> that it is the dconf-service. See the attached picture. Whenever I do
> the Sudoku window moving action the top window starts showing
> dconf-service in D state.
Here is a strace produced log of the dconf-service process during the
Sudoku window moving action:
----8<----8<----8<----8<----8<----8<----8<----8<----8<----8<----8<----8<----8<----8<----8<----8<
Process 4572 attached - interrupt to quit
restart_syscall(<... resuming interrupted call ...>) = 1
poll([{fd=3, events=POLLIN}], 1, 0) = 1 ([{fd=3, revents=POLLIN}])
read(3, "\2\0\0\0\0\0\0\0", 16) = 8
poll([{fd=3, events=POLLIN}], 1, 0) = 0 (Timeout)
read(3, 0x7fff1bd4bba0, 16) = -1 EAGAIN (Resource
temporarily unavailable)
open("/home/wilx/.config/dconf/user", O_RDONLY) = 9
fstat(9, {st_mode=S_IFREG|0664, st_size=13780, ...}) = 0
mmap(NULL, 13780, PROT_READ, MAP_PRIVATE, 9, 0) = 0x7ffde5f89000
close(9) = 0
open("/home/wilx/.config/dconf/user.0GRSMW", O_RDWR|O_CREAT|O_EXCL,
0666) = 9
fcntl(9, F_GETFL) = 0x8002 (flags O_RDWR|O_LARGEFILE)
fstat(9, {st_mode=S_IFREG|0664, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
= 0x7ffde5f88000
lseek(9, 0, SEEK_CUR) = 0
write(9,
"GVariant\0\0\0\0\0\0\0\0\30\0\0\0\320\32\0\0\0\0\0(\364\0\0\0"...,
12288) = 12288
write(9, "ge_viewer\0importer\0jpeg_utils\0li"..., 1492) = 1492
fstatfs(9, {f_type=0x58465342, f_bsize=4096, f_blocks=191361237,
f_bfree=95706984, f_bavail=95706984, f_files=765818880,
f_ffree=764249066, f_fsid={2049, 0}, f_namelen=255, f_frsize=4096}) = 0
lstat("/home/wilx/.config/dconf/user", {st_mode=S_IFREG|0664,
st_size=13780, ...}) = 0
fsync(9) = 0
close(9) = 0
munmap(0x7ffde5f88000, 4096) = 0
rename("/home/wilx/.config/dconf/user.0GRSMW",
"/home/wilx/.config/dconf/user") = 0
munmap(0x7ffde5f89000, 13780) = 0
open("/run/user/wilx/dconf/user", O_RDWR) = 9
pwrite(9, "\0", 1, 1) = 1
mmap(NULL, 1, PROT_WRITE, MAP_SHARED, 9, 0) = 0x7ffde5f8c000
munmap(0x7ffde5f8c000, 1) = 0
close(9) = 0
unlink("/run/user/wilx/dconf/user") = 0
write(7, "\1\0\0\0\0\0\0\0", 8) = 8
futex(0x7ffdd400c670, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7ffdd400c1a0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x257b920, FUTEX_WAKE_PRIVATE, 1) = 1
write(7, "\1\0\0\0\0\0\0\0", 8) = 8
futex(0x7ffdd400c670, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7ffdd400c1a0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x257b920, FUTEX_WAKE_PRIVATE, 1) = 1
----8<----8<----8<----8<----8<----8<----8<----8<----8<----8<----8<----8<----8<----8<----8<----8<
Either the Sudoku application or the dconf-service are doing something
fishy. The fsync(9) there causes the disk flushes and thrashing.
--
VZ
-------------- next part --------------
Process 4572 attached - interrupt to quit
restart_syscall(<... resuming interrupted call ...>) = 1
poll([{fd=3, events=POLLIN}], 1, 0) = 1 ([{fd=3, revents=POLLIN}])
read(3, "\2\0\0\0\0\0\0\0", 16) = 8
poll([{fd=3, events=POLLIN}], 1, 0) = 0 (Timeout)
read(3, 0x7fff1bd4bba0, 16) = -1 EAGAIN (Resource temporarily unavailable)
open("/home/wilx/.config/dconf/user", O_RDONLY) = 9
fstat(9, {st_mode=S_IFREG|0664, st_size=13780, ...}) = 0
mmap(NULL, 13780, PROT_READ, MAP_PRIVATE, 9, 0) = 0x7ffde5f89000
close(9) = 0
open("/home/wilx/.config/dconf/user.0GRSMW", O_RDWR|O_CREAT|O_EXCL, 0666) = 9
fcntl(9, F_GETFL) = 0x8002 (flags O_RDWR|O_LARGEFILE)
fstat(9, {st_mode=S_IFREG|0664, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffde5f88000
lseek(9, 0, SEEK_CUR) = 0
write(9, "GVariant\0\0\0\0\0\0\0\0\30\0\0\0\320\32\0\0\0\0\0(\364\0\0\0"..., 12288) = 12288
write(9, "ge_viewer\0importer\0jpeg_utils\0li"..., 1492) = 1492
fstatfs(9, {f_type=0x58465342, f_bsize=4096, f_blocks=191361237, f_bfree=95706984, f_bavail=95706984, f_files=765818880, f_ffree=764249066, f_fsid={2049, 0}, f_namelen=255, f_frsize=4096}) = 0
lstat("/home/wilx/.config/dconf/user", {st_mode=S_IFREG|0664, st_size=13780, ...}) = 0
fsync(9) = 0
close(9) = 0
munmap(0x7ffde5f88000, 4096) = 0
rename("/home/wilx/.config/dconf/user.0GRSMW", "/home/wilx/.config/dconf/user") = 0
munmap(0x7ffde5f89000, 13780) = 0
open("/run/user/wilx/dconf/user", O_RDWR) = 9
pwrite(9, "\0", 1, 1) = 1
mmap(NULL, 1, PROT_WRITE, MAP_SHARED, 9, 0) = 0x7ffde5f8c000
munmap(0x7ffde5f8c000, 1) = 0
close(9) = 0
unlink("/run/user/wilx/dconf/user") = 0
write(7, "\1\0\0\0\0\0\0\0", 8) = 8
futex(0x7ffdd400c670, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7ffdd400c1a0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x257b920, FUTEX_WAKE_PRIVATE, 1) = 1
write(7, "\1\0\0\0\0\0\0\0", 8) = 8
futex(0x7ffdd400c670, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7ffdd400c1a0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x257b920, FUTEX_WAKE_PRIVATE, 1) = 1
open("/home/wilx/.config/dconf/user", O_RDONLY) = 9
fstat(9, {st_mode=S_IFREG|0664, st_size=13780, ...}) = 0
mmap(NULL, 13780, PROT_READ, MAP_PRIVATE, 9, 0) = 0x7ffde5f89000
close(9) = 0
open("/home/wilx/.config/dconf/user.1ZQQMW", O_RDWR|O_CREAT|O_EXCL, 0666) = 9
fcntl(9, F_GETFL) = 0x8002 (flags O_RDWR|O_LARGEFILE)
fstat(9, {st_mode=S_IFREG|0664, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffde5f88000
lseek(9, 0, SEEK_CUR) = 0
write(9, "GVariant\0\0\0\0\0\0\0\0\30\0\0\0\320\32\0\0\0\0\0(\364\0\0\0"..., 12288) = 12288
write(9, "ge_viewer\0importer\0jpeg_utils\0li"..., 1492) = 1492
fstatfs(9, {f_type=0x58465342, f_bsize=4096, f_blocks=191361237, f_bfree=95706980, f_bavail=95706980, f_files=765818880, f_ffree=764249065, f_fsid={2049, 0}, f_namelen=255, f_frsize=4096}) = 0
lstat("/home/wilx/.config/dconf/user", {st_mode=S_IFREG|0664, st_size=13780, ...}) = 0
fsync(9) = 0
close(9) = 0
munmap(0x7ffde5f88000, 4096) = 0
rename("/home/wilx/.config/dconf/user.1ZQQMW", "/home/wilx/.config/dconf/user") = 0
munmap(0x7ffde5f89000, 13780) = 0
open("/run/user/wilx/dconf/user", O_RDWR) = 9
pwrite(9, "\0", 1, 1) = 1
mmap(NULL, 1, PROT_WRITE, MAP_SHARED, 9, 0) = 0x7ffde5f8c000
munmap(0x7ffde5f8c000, 1) = 0
close(9) = 0
unlink("/run/user/wilx/dconf/user") = 0
write(7, "\1\0\0\0\0\0\0\0", 8) = 8
futex(0x7ffdd400c670, FUTEX_WAKE_PRIVATE, 1) = 1
write(7, "\1\0\0\0\0\0\0\0", 8) = 8
futex(0x7ffdd400c670, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7ffdd400c1a0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x257b920, FUTEX_WAKE_PRIVATE, 1) = 1
poll([{fd=3, events=POLLIN}], 1, 0) = 1 ([{fd=3, revents=POLLIN}])
open("/home/wilx/.config/dconf/user", O_RDONLY) = 9
fstat(9, {st_mode=S_IFREG|0664, st_size=13780, ...}) = 0
mmap(NULL, 13780, PROT_READ, MAP_PRIVATE, 9, 0) = 0x7ffde5f89000
close(9) = 0
open("/home/wilx/.config/dconf/user.KAVOMW", O_RDWR|O_CREAT|O_EXCL, 0666) = 9
fcntl(9, F_GETFL) = 0x8002 (flags O_RDWR|O_LARGEFILE)
fstat(9, {st_mode=S_IFREG|0664, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffde5f88000
lseek(9, 0, SEEK_CUR) = 0
write(9, "GVariant\0\0\0\0\0\0\0\0\30\0\0\0\320\32\0\0\0\0\0(\364\0\0\0"..., 12288) = 12288
write(9, "ge_viewer\0importer\0jpeg_utils\0li"..., 1492) = 1492
fstatfs(9, {f_type=0x58465342, f_bsize=4096, f_blocks=191361237, f_bfree=95706980, f_bavail=95706980, f_files=765818880, f_ffree=764249065, f_fsid={2049, 0}, f_namelen=255, f_frsize=4096}) = 0
lstat("/home/wilx/.config/dconf/user", {st_mode=S_IFREG|0664, st_size=13780, ...}) = 0
fsync(9) = 0
close(9) = 0
munmap(0x7ffde5f88000, 4096) = 0
rename("/home/wilx/.config/dconf/user.KAVOMW", "/home/wilx/.config/dconf/user") = 0
munmap(0x7ffde5f89000, 13780) = 0
open("/run/user/wilx/dconf/user", O_RDWR) = 9
pwrite(9, "\0", 1, 1) = 1
mmap(NULL, 1, PROT_WRITE, MAP_SHARED, 9, 0) = 0x7ffde5f8c000
munmap(0x7ffde5f8c000, 1) = 0
close(9) = 0
unlink("/run/user/wilx/dconf/user") = 0
write(7, "\1\0\0\0\0\0\0\0", 8) = 8
futex(0x7ffdd400c670, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7ffdd400c1a0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x257b920, FUTEX_WAKE_PRIVATE, 1) = 1
write(7, "\1\0\0\0\0\0\0\0", 8) = 8
futex(0x7ffdd400c670, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7ffdd400c1a0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x257b920, FUTEX_WAKE_PRIVATE, 1) = 1
read(3, "\2\0\0\0\0\0\0\0", 16) = 8
futex(0x7ffde52ae740, FUTEX_WAKE_PRIVATE, 1) = 0
poll([{fd=3, events=POLLIN}], 1, 0) = 0 (Timeout)
read(3, 0x7fff1bd4bba0, 16) = -1 EAGAIN (Resource temporarily unavailable)
open("/home/wilx/.config/dconf/user", O_RDONLY) = 9
fstat(9, {st_mode=S_IFREG|0664, st_size=13780, ...}) = 0
mmap(NULL, 13780, PROT_READ, MAP_PRIVATE, 9, 0) = 0x7ffde5f89000
close(9) = 0
open("/home/wilx/.config/dconf/user.9WJYMW", O_RDWR|O_CREAT|O_EXCL, 0666) = 9
fcntl(9, F_GETFL) = 0x8002 (flags O_RDWR|O_LARGEFILE)
fstat(9, {st_mode=S_IFREG|0664, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffde5f88000
lseek(9, 0, SEEK_CUR) = 0
write(9, "GVariant\0\0\0\0\0\0\0\0\30\0\0\0\320\32\0\0\0\0\0(\364\0\0\0"..., 12288) = 12288
write(9, "ge_viewer\0importer\0jpeg_utils\0li"..., 1492) = 1492
fstatfs(9, {f_type=0x58465342, f_bsize=4096, f_blocks=191361237, f_bfree=95706976, f_bavail=95706976, f_files=765818880, f_ffree=764249064, f_fsid={2049, 0}, f_namelen=255, f_frsize=4096}) = 0
lstat("/home/wilx/.config/dconf/user", {st_mode=S_IFREG|0664, st_size=13780, ...}) = 0
fsync(9) = 0
close(9) = 0
munmap(0x7ffde5f88000, 4096) = 0
rename("/home/wilx/.config/dconf/user.9WJYMW", "/home/wilx/.config/dconf/user") = 0
munmap(0x7ffde5f89000, 13780) = 0
open("/run/user/wilx/dconf/user", O_RDWR) = 9
pwrite(9, "\0", 1, 1) = 1
mmap(NULL, 1, PROT_WRITE, MAP_SHARED, 9, 0) = 0x7ffde5f8c000
munmap(0x7ffde5f8c000, 1) = 0
close(9) = 0
unlink("/run/user/wilx/dconf/user") = 0
write(7, "\1\0\0\0\0\0\0\0", 8) = 8
futex(0x7ffdd400c670, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7ffdd400c1a0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x257b920, FUTEX_WAKE_PRIVATE, 1) = 1
write(7, "\1\0\0\0\0\0\0\0", 8) = 8
futex(0x7ffdd400c670, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7ffdd400c1a0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x257b920, FUTEX_WAKE_PRIVATE, 1) = 1
poll([{fd=3, events=POLLIN}], 1, 0) = 1 ([{fd=3, revents=POLLIN}])
open("/home/wilx/.config/dconf/user", O_RDONLY) = 9
fstat(9, {st_mode=S_IFREG|0664, st_size=13780, ...}) = 0
mmap(NULL, 13780, PROT_READ, MAP_PRIVATE, 9, 0) = 0x7ffde5f89000
close(9) = 0
open("/home/wilx/.config/dconf/user.UX8VMW", O_RDWR|O_CREAT|O_EXCL, 0666) = 9
fcntl(9, F_GETFL) = 0x8002 (flags O_RDWR|O_LARGEFILE)
fstat(9, {st_mode=S_IFREG|0664, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffde5f88000
lseek(9, 0, SEEK_CUR) = 0
write(9, "GVariant\0\0\0\0\0\0\0\0\30\0\0\0\320\32\0\0\0\0\0(\364\0\0\0"..., 12288) = 12288
write(9, "ge_viewer\0importer\0jpeg_utils\0li"..., 1492) = 1492
fstatfs(9, {f_type=0x58465342, f_bsize=4096, f_blocks=191361237, f_bfree=95706976, f_bavail=95706976, f_files=765818880, f_ffree=764249064, f_fsid={2049, 0}, f_namelen=255, f_frsize=4096}) = 0
lstat("/home/wilx/.config/dconf/user", {st_mode=S_IFREG|0664, st_size=13780, ...}) = 0
fsync(9) = 0
close(9) = 0
munmap(0x7ffde5f88000, 4096) = 0
rename("/home/wilx/.config/dconf/user.UX8VMW", "/home/wilx/.config/dconf/user") = 0
munmap(0x7ffde5f89000, 13780) = 0
open("/run/user/wilx/dconf/user", O_RDWR) = -1 ENOENT (No such file or directory)
write(7, "\1\0\0\0\0\0\0\0", 8) = 8
futex(0x7ffdd400c670, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7ffdd400c1a0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x257b920, FUTEX_WAKE_PRIVATE, 1) = 1
write(7, "\1\0\0\0\0\0\0\0", 8) = 8
futex(0x7ffdd400c670, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7ffdd400c1a0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x257b920, FUTEX_WAKE_PRIVATE, 1) = 1
open("/home/wilx/.config/dconf/user", O_RDONLY) = 9
fstat(9, {st_mode=S_IFREG|0664, st_size=13780, ...}) = 0
mmap(NULL, 13780, PROT_READ, MAP_PRIVATE, 9, 0) = 0x7ffde5f89000
close(9) = 0
open("/home/wilx/.config/dconf/user.X3FIMW", O_RDWR|O_CREAT|O_EXCL, 0666) = 9
fcntl(9, F_GETFL) = 0x8002 (flags O_RDWR|O_LARGEFILE)
fstat(9, {st_mode=S_IFREG|0664, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffde5f88000
lseek(9, 0, SEEK_CUR) = 0
write(9, "GVariant\0\0\0\0\0\0\0\0\30\0\0\0\320\32\0\0\0\0\0(\364\0\0\0"..., 12288) = 12288
write(9, "ge_viewer\0importer\0jpeg_utils\0li"..., 1492) = 1492
fstatfs(9, {f_type=0x58465342, f_bsize=4096, f_blocks=191361237, f_bfree=95706976, f_bavail=95706976, f_files=765818880, f_ffree=764249064, f_fsid={2049, 0}, f_namelen=255, f_frsize=4096}) = 0
lstat("/home/wilx/.config/dconf/user", {st_mode=S_IFREG|0664, st_size=13780, ...}) = 0
fsync(9) = 0
close(9) = 0
munmap(0x7ffde5f88000, 4096) = 0
rename("/home/wilx/.config/dconf/user.X3FIMW", "/home/wilx/.config/dconf/user") = 0
munmap(0x7ffde5f89000, 13780) = 0
open("/run/user/wilx/dconf/user", O_RDWR) = -1 ENOENT (No such file or directory)
write(7, "\1\0\0\0\0\0\0\0", 8) = 8
futex(0x7ffdd400c670, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7ffdd400c1a0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x257b920, FUTEX_WAKE_PRIVATE, 1) = 1
write(7, "\1\0\0\0\0\0\0\0", 8) = 8
futex(0x7ffdd400c670, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7ffdd400c1a0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x257b920, FUTEX_WAKE_PRIVATE, 1) = 1
read(3, "\3\0\0\0\0\0\0\0", 16) = 8
poll([{fd=3, events=POLLIN}], 1, 0) = 0 (Timeout)
read(3, 0x7fff1bd4bba0, 16) = -1 EAGAIN (Resource temporarily unavailable)
open("/home/wilx/.config/dconf/user", O_RDONLY) = 9
fstat(9, {st_mode=S_IFREG|0664, st_size=13780, ...}) = 0
mmap(NULL, 13780, PROT_READ, MAP_PRIVATE, 9, 0) = 0x7ffde5f89000
close(9) = 0
open("/home/wilx/.config/dconf/user.T63FMW", O_RDWR|O_CREAT|O_EXCL, 0666) = 9
fcntl(9, F_GETFL) = 0x8002 (flags O_RDWR|O_LARGEFILE)
fstat(9, {st_mode=S_IFREG|0664, st_size=0, ...}) = 0
mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7ffde5f88000
lseek(9, 0, SEEK_CUR) = 0
write(9, "GVariant\0\0\0\0\0\0\0\0\30\0\0\0\320\32\0\0\0\0\0(\364\0\0\0"..., 12288) = 12288
write(9, "ge_viewer\0importer\0jpeg_utils\0li"..., 1492) = 1492
fstatfs(9, {f_type=0x58465342, f_bsize=4096, f_blocks=191361237, f_bfree=95706976, f_bavail=95706976, f_files=765818880, f_ffree=764249064, f_fsid={2049, 0}, f_namelen=255, f_frsize=4096}) = 0
lstat("/home/wilx/.config/dconf/user", {st_mode=S_IFREG|0664, st_size=13780, ...}) = 0
fsync(9) = 0
close(9) = 0
munmap(0x7ffde5f88000, 4096) = 0
rename("/home/wilx/.config/dconf/user.T63FMW", "/home/wilx/.config/dconf/user") = 0
munmap(0x7ffde5f89000, 13780) = 0
open("/run/user/wilx/dconf/user", O_RDWR) = -1 ENOENT (No such file or directory)
write(7, "\1\0\0\0\0\0\0\0", 8) = 8
futex(0x7ffdd400c670, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7ffdd400c1a0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x257b920, FUTEX_WAKE_PRIVATE, 1) = 1
write(7, "\1\0\0\0\0\0\0\0", 8) = 8
futex(0x7ffdd400c670, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7ffdd400c1a0, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x257b920, FUTEX_WAKE_PRIVATE, 1) = 1
poll([{fd=3, events=POLLIN}], 1, -1
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