[Gluster-devel] io-cache exceeding cache-size value
Dan Parsons
dparsons at nyip.net
Wed Mar 4 19:22:18 UTC 2009
Any update on this? Was my debugging information helpful? Any status update
at all would be greatly appreciated.
Dan
2009/2/24 Amar (ಅಮರ್ ತುಂಬಳ್ಳಿ) <amarts at gmail.com>
> Thanks for this data, Dan and Gorman.
>
> This should help us a lot.
>
> Regards,
> Amar
>
> 2009/2/24 Gordan Bobic <gordan at bobich.net>
>
> Just after mounting:
>>
>> top:
>> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
>> 4605 root 20 0 51348 2368 1296 S 0 0.1 0:00.08 glusterfs
>>
>> # kill -s SIGUSR1 4605
>> Arena 0:
>> system bytes = 479232
>> in use bytes = 258832
>> Total (incl. mmap):
>> system bytes = 1466368
>> in use bytes = 1245968
>> max mmap regions = 5
>> max mmap bytes = 1122304
>>
>> After compiling the kernel:
>> # make clean; make dep; make -j32 all
>>
>> top:
>> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
>> 4605 root 20 0 202m 97m 1316 S 0 2.5 2:42.09 glusterfs
>>
>> # kill -s SIGUSR1 4605
>> Arena 0:
>> system bytes = 26423296
>> in use bytes = 25972704
>> Arena 1:
>> system bytes = 74113024
>> in use bytes = 73516560
>> Total (incl. mmap):
>> system bytes = 101523456
>> in use bytes = 100476400
>> max mmap regions = 5
>> max mmap bytes = 1122304
>>
>> # ./pmap 4605
>> glusterfs(4605)
>> 00400000 (24 KB) r-xp (09:02 442904105) /usr/sbin/glusterfsd
>> 00606000 (4 KB) rw-p (09:02 442904105) /usr/sbin/glusterfsd
>> 00607000 (25804 KB) rw-p (00:00 0) [heap]
>> 40000000 (4 KB) ---p (00:00 0)
>> 40001000 (8192 KB) rw-p (00:00 0)
>> 40801000 (4 KB) ---p (00:00 0)
>> 40802000 (8192 KB) rw-p (00:00 0)
>> 3a38600000 (176 KB) r-xp (09:02 442904212)
>> /usr/lib64/libglusterfs.so.0.0.0
>> 3a3862c000 (2048 KB) ---p (09:02 442904212)
>> /usr/lib64/libglusterfs.so.0.0.0
>> 3a3882c000 (4 KB) rw-p (09:02 442904212)
>> /usr/lib64/libglusterfs.so.0.0.0
>> 3a3882d000 (72 KB) rw-p (00:00 0)
>> 3d4c800000 (104 KB) r-xp (09:02 1194229765) /lib64/ld-2.5.so
>> 3d4ca1a000 (4 KB) r--p (09:02 1194229765) /lib64/ld-2.5.so
>> 3d4ca1b000 (4 KB) rw-p (09:02 1194229765) /lib64/ld-2.5.so
>> 3d4cc00000 (1320 KB) r-xp (09:02 1194229772) /lib64/libc-2.5.so
>> 3d4cd4a000 (2048 KB) ---p (09:02 1194229772) /lib64/libc-2.5.so
>> 3d4cf4a000 (16 KB) r--p (09:02 1194229772) /lib64/libc-2.5.so
>> 3d4cf4e000 (4 KB) rw-p (09:02 1194229772) /lib64/libc-2.5.so
>> 3d4cf4f000 (20 KB) rw-p (00:00 0)
>> 3d4d000000 (8 KB) r-xp (09:02 1194229776) /lib64/libdl-2.5.so
>> 3d4d002000 (2048 KB) ---p (09:02 1194229776) /lib64/libdl-2.5.so
>> 3d4d202000 (4 KB) r--p (09:02 1194229776) /lib64/libdl-2.5.so
>> 3d4d203000 (4 KB) rw-p (09:02 1194229776) /lib64/libdl-2.5.so
>> 3d4dc00000 (84 KB) r-xp (09:02 1194229786) /lib64/
>> libpthread-2.5.so
>> 3d4dc15000 (2044 KB) ---p (09:02 1194229786) /lib64/
>> libpthread-2.5.so
>> 3d4de14000 (4 KB) r--p (09:02 1194229786) /lib64/
>> libpthread-2.5.so
>> 3d4de15000 (4 KB) rw-p (09:02 1194229786) /lib64/
>> libpthread-2.5.so
>> 3d4de16000 (16 KB) rw-p (00:00 0)
>> 3d4e400000 (28 KB) r-xp (09:02 1194229788) /lib64/librt-2.5.so
>> 3d4e407000 (2048 KB) ---p (09:02 1194229788) /lib64/librt-2.5.so
>> 3d4e607000 (4 KB) r--p (09:02 1194229788) /lib64/librt-2.5.so
>> 3d4e608000 (4 KB) rw-p (09:02 1194229788) /lib64/librt-2.5.so
>> 2aaaaaaab000 (28 KB) r-xp (09:02 443222345)
>> /usr/lib64/glusterfs/2.0.0rc1/transport/socket.so.0.0.0
>> 2aaaaaab2000 (2044 KB) ---p (09:02 443222345)
>> /usr/lib64/glusterfs/2.0.0rc1/transport/socket.so.0.0.0
>> 2aaaaacb1000 (8 KB) rw-p (09:02 443222345)
>> /usr/lib64/glusterfs/2.0.0rc1/transport/socket.so.0.0.0
>> 2aaaaacb3000 (576 KB) rw-p (00:00 0)
>> 2aaaaad43000 (8 KB) r-xp (09:02 443222303)
>> /usr/lib64/glusterfs/2.0.0rc1/auth/addr.so.0.0.0
>> 2aaaaad45000 (2044 KB) ---p (09:02 443222303)
>> /usr/lib64/glusterfs/2.0.0rc1/auth/addr.so.0.0.0
>> 2aaaaaf44000 (4 KB) rw-p (09:02 443222303)
>> /usr/lib64/glusterfs/2.0.0rc1/auth/addr.so.0.0.0
>> 2aaaaaf4e000 (40 KB) r-xp (09:02 1194229787) /lib64/libnss_files-2.5.so
>> 2aaaaaf58000 (2044 KB) ---p (09:02 1194229787) /lib64/libnss_files-2.5.so
>> 2aaaab157000 (4 KB) r--p (09:02 1194229787) /lib64/libnss_files-2.5.so
>> 2aaaab158000 (4 KB) rw-p (09:02 1194229787) /lib64/libnss_files-2.5.so
>> 2aaaac000000 (72380 KB) rw-p (00:00 0)
>> 2aaab06af000 (58692 KB) ---p (00:00 0)
>> 2b4ac185b000 (8 KB) rw-p (00:00 0)
>> 2b4ac1866000 (404 KB) rw-p (00:00 0)
>> 2b4ac18cb000 (104 KB) r-xp (09:02 443252818)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/protocol/client.so.0.0.0
>> 2b4ac18e5000 (2048 KB) ---p (09:02 443252818)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/protocol/client.so.0.0.0
>> 2b4ac1ae5000 (8 KB) rw-p (09:02 443252818)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/protocol/client.so.0.0.0
>> 2b4ac1ae7000 (64 KB) r-xp (09:02 443252834)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/storage/posix.so.0.0.0
>> 2b4ac1af7000 (2044 KB) ---p (09:02 443252834)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/storage/posix.so.0.0.0
>> 2b4ac1cf6000 (8 KB) rw-p (09:02 443252834)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/storage/posix.so.0.0.0
>> 2b4ac1cf8000 (28 KB) r-xp (09:02 443252764)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/features/locks.so.0.0.0
>> 2b4ac1cff000 (2048 KB) ---p (09:02 443252764)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/features/locks.so.0.0.0
>> 2b4ac1eff000 (4 KB) rw-p (09:02 443252764)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/features/locks.so.0.0.0
>> 2b4ac1f00000 (108 KB) r-xp (09:02 443252823)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/protocol/server.so.0.0.0
>> 2b4ac1f1b000 (2044 KB) ---p (09:02 443252823)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/protocol/server.so.0.0.0
>> 2b4ac211a000 (8 KB) rw-p (09:02 443252823)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/protocol/server.so.0.0.0
>> 2b4ac211c000 (176 KB) r-xp (09:02 443222352)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/cluster/afr.so.0.0.0
>> 2b4ac2148000 (2048 KB) ---p (09:02 443222352)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/cluster/afr.so.0.0.0
>> 2b4ac2348000 (12 KB) rw-p (09:02 443222352)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/cluster/afr.so.0.0.0
>> 2b4ac234b000 (56 KB) r-xp (09:02 443252786)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/mount/fuse.so.0.0.0
>> 2b4ac2359000 (2044 KB) ---p (09:02 443252786)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/mount/fuse.so.0.0.0
>> 2b4ac2558000 (8 KB) rw-p (09:02 443252786)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/mount/fuse.so.0.0.0
>> 2b4ac255a000 (116 KB) r-xp (09:02 442904974)
>> /usr/lib64/libfuse.so.2.7.4
>> 2b4ac2577000 (2048 KB) ---p (09:02 442904974)
>> /usr/lib64/libfuse.so.2.7.4
>> 2b4ac2777000 (8 KB) rw-p (09:02 442904974)
>> /usr/lib64/libfuse.so.2.7.4
>> 7fffe923a000 (84 KB) rw-p (00:00 0) [stack]
>> 7fffe93fe000 (8 KB) r-xp (00:00 0) [vdso]
>> ffffffffff600000 (4 KB) r-xp (00:00 0) [vsyscall]
>> mapped: 207760 KB writable/private: 115848 KB shared: 0 KB
>>
>> And again:
>> # make clean; make dep; make -j32 all
>>
>> top:
>> PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
>> 4605 root 20 0 266m 192m 1316 S 0 4.9 5:26.57 glusterfs
>>
>> # kill -s SIGUSR1 4605
>>
>> Arena 0:
>> system bytes = 26423296
>> in use bytes = 25972784
>> Arena 1:
>> system bytes = 173174784
>> in use bytes = 172023232
>> Total (incl. mmap):
>> system bytes = 200585216
>> in use bytes = 198983152
>> max mmap regions = 5
>> max mmap bytes = 1122304
>>
>> # ./pmap 4605
>> glusterfs(4605)
>> 00400000 (24 KB) r-xp (09:02 442904105) /usr/sbin/glusterfsd
>> 00606000 (4 KB) rw-p (09:02 442904105) /usr/sbin/glusterfsd
>> 00607000 (25804 KB) rw-p (00:00 0) [heap]
>> 40000000 (4 KB) ---p (00:00 0)
>> 40001000 (8192 KB) rw-p (00:00 0)
>> 40801000 (4 KB) ---p (00:00 0)
>> 40802000 (8192 KB) rw-p (00:00 0)
>> 3a38600000 (176 KB) r-xp (09:02 442904212)
>> /usr/lib64/libglusterfs.so.0.0.0
>> 3a3862c000 (2048 KB) ---p (09:02 442904212)
>> /usr/lib64/libglusterfs.so.0.0.0
>> 3a3882c000 (4 KB) rw-p (09:02 442904212)
>> /usr/lib64/libglusterfs.so.0.0.0
>> 3a3882d000 (72 KB) rw-p (00:00 0)
>> 3d4c800000 (104 KB) r-xp (09:02 1194229765) /lib64/ld-2.5.so
>> 3d4ca1a000 (4 KB) r--p (09:02 1194229765) /lib64/ld-2.5.so
>> 3d4ca1b000 (4 KB) rw-p (09:02 1194229765) /lib64/ld-2.5.so
>> 3d4cc00000 (1320 KB) r-xp (09:02 1194229772) /lib64/libc-2.5.so
>> 3d4cd4a000 (2048 KB) ---p (09:02 1194229772) /lib64/libc-2.5.so
>> 3d4cf4a000 (16 KB) r--p (09:02 1194229772) /lib64/libc-2.5.so
>> 3d4cf4e000 (4 KB) rw-p (09:02 1194229772) /lib64/libc-2.5.so
>> 3d4cf4f000 (20 KB) rw-p (00:00 0)
>> 3d4d000000 (8 KB) r-xp (09:02 1194229776) /lib64/libdl-2.5.so
>> 3d4d002000 (2048 KB) ---p (09:02 1194229776) /lib64/libdl-2.5.so
>> 3d4d202000 (4 KB) r--p (09:02 1194229776) /lib64/libdl-2.5.so
>> 3d4d203000 (4 KB) rw-p (09:02 1194229776) /lib64/libdl-2.5.so
>> 3d4dc00000 (84 KB) r-xp (09:02 1194229786) /lib64/
>> libpthread-2.5.so
>> 3d4dc15000 (2044 KB) ---p (09:02 1194229786) /lib64/
>> libpthread-2.5.so
>> 3d4de14000 (4 KB) r--p (09:02 1194229786) /lib64/
>> libpthread-2.5.so
>> 3d4de15000 (4 KB) rw-p (09:02 1194229786) /lib64/
>> libpthread-2.5.so
>> 3d4de16000 (16 KB) rw-p (00:00 0)
>> 3d4e400000 (28 KB) r-xp (09:02 1194229788) /lib64/librt-2.5.so
>> 3d4e407000 (2048 KB) ---p (09:02 1194229788) /lib64/librt-2.5.so
>> 3d4e607000 (4 KB) r--p (09:02 1194229788) /lib64/librt-2.5.so
>> 3d4e608000 (4 KB) rw-p (09:02 1194229788) /lib64/librt-2.5.so
>> 2aaaaaaab000 (28 KB) r-xp (09:02 443222345)
>> /usr/lib64/glusterfs/2.0.0rc1/transport/socket.so.0.0.0
>> 2aaaaaab2000 (2044 KB) ---p (09:02 443222345)
>> /usr/lib64/glusterfs/2.0.0rc1/transport/socket.so.0.0.0
>> 2aaaaacb1000 (8 KB) rw-p (09:02 443222345)
>> /usr/lib64/glusterfs/2.0.0rc1/transport/socket.so.0.0.0
>> 2aaaaacb3000 (576 KB) rw-p (00:00 0)
>> 2aaaaad43000 (8 KB) r-xp (09:02 443222303)
>> /usr/lib64/glusterfs/2.0.0rc1/auth/addr.so.0.0.0
>> 2aaaaad45000 (2044 KB) ---p (09:02 443222303)
>> /usr/lib64/glusterfs/2.0.0rc1/auth/addr.so.0.0.0
>> 2aaaaaf44000 (4 KB) rw-p (09:02 443222303)
>> /usr/lib64/glusterfs/2.0.0rc1/auth/addr.so.0.0.0
>> 2aaaaaf4e000 (40 KB) r-xp (09:02 1194229787) /lib64/libnss_files-2.5.so
>> 2aaaaaf58000 (2044 KB) ---p (09:02 1194229787) /lib64/libnss_files-2.5.so
>> 2aaaab157000 (4 KB) r--p (09:02 1194229787) /lib64/libnss_files-2.5.so
>> 2aaaab158000 (4 KB) rw-p (09:02 1194229787) /lib64/libnss_files-2.5.so
>> 2aaaac000000 (169120 KB) rw-p (00:00 0)
>> 2aaab6528000 (27488 KB) ---p (00:00 0)
>> 2b4ac185b000 (8 KB) rw-p (00:00 0)
>> 2b4ac1866000 (404 KB) rw-p (00:00 0)
>> 2b4ac18cb000 (104 KB) r-xp (09:02 443252818)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/protocol/client.so.0.0.0
>> 2b4ac18e5000 (2048 KB) ---p (09:02 443252818)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/protocol/client.so.0.0.0
>> 2b4ac1ae5000 (8 KB) rw-p (09:02 443252818)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/protocol/client.so.0.0.0
>> 2b4ac1ae7000 (64 KB) r-xp (09:02 443252834)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/storage/posix.so.0.0.0
>> 2b4ac1af7000 (2044 KB) ---p (09:02 443252834)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/storage/posix.so.0.0.0
>> 2b4ac1cf6000 (8 KB) rw-p (09:02 443252834)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/storage/posix.so.0.0.0
>> 2b4ac1cf8000 (28 KB) r-xp (09:02 443252764)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/features/locks.so.0.0.0
>> 2b4ac1cff000 (2048 KB) ---p (09:02 443252764)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/features/locks.so.0.0.0
>> 2b4ac1eff000 (4 KB) rw-p (09:02 443252764)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/features/locks.so.0.0.0
>> 2b4ac1f00000 (108 KB) r-xp (09:02 443252823)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/protocol/server.so.0.0.0
>> 2b4ac1f1b000 (2044 KB) ---p (09:02 443252823)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/protocol/server.so.0.0.0
>> 2b4ac211a000 (8 KB) rw-p (09:02 443252823)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/protocol/server.so.0.0.0
>> 2b4ac211c000 (176 KB) r-xp (09:02 443222352)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/cluster/afr.so.0.0.0
>> 2b4ac2148000 (2048 KB) ---p (09:02 443222352)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/cluster/afr.so.0.0.0
>> 2b4ac2348000 (12 KB) rw-p (09:02 443222352)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/cluster/afr.so.0.0.0
>> 2b4ac234b000 (56 KB) r-xp (09:02 443252786)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/mount/fuse.so.0.0.0
>> 2b4ac2359000 (2044 KB) ---p (09:02 443252786)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/mount/fuse.so.0.0.0
>> 2b4ac2558000 (8 KB) rw-p (09:02 443252786)
>> /usr/lib64/glusterfs/2.0.0rc1/xlator/mount/fuse.so.0.0.0
>> 2b4ac255a000 (116 KB) r-xp (09:02 442904974)
>> /usr/lib64/libfuse.so.2.7.4
>> 2b4ac2577000 (2048 KB) ---p (09:02 442904974)
>> /usr/lib64/libfuse.so.2.7.4
>> 2b4ac2777000 (8 KB) rw-p (09:02 442904974)
>> /usr/lib64/libfuse.so.2.7.4
>> 7fffe923a000 (84 KB) rw-p (00:00 0) [stack]
>> 7fffe93fe000 (8 KB) r-xp (00:00 0) [vdso]
>> ffffffffff600000 (4 KB) r-xp (00:00 0) [vsyscall]
>> mapped: 273296 KB writable/private: 212588 KB shared: 0 KB
>>
>> I hope this is useful.
>>
>> Gordan
>>
>> Amar Tumballi (bulde) wrote:
>>
>>> Hi Gordan and Dan,
>>>
>>> It would help me a lot if its possible for you to get the info as
>>> described below,
>>>
>>> compile glusterfs like
>>>
>>> bash# make clean > /dev/null
>>> bash# make CFLAGS="-g -O0 -DDEBUG" > /dev/null
>>> bash# make install
>>>
>>> run the process which consumes memory (mostly client process) like below:
>>>
>>> bash# glusterfs <any argument you give generally> -N
>>> <this process will run in foreground now>
>>>
>>> Open another terminal
>>>
>>> bash# ps aux | grep glusterfs
>>> bash# kill -s SIGUSR1 <pid of glusterfs -N process>
>>> <Check in other terminal for memory usage stats>
>>>
>>> bash# <run your application over glusterfs as you do till you get high
>>> memory usage of glusterfs.. >
>>> bash# kill -s SIGUSR1 <pid of glusterfs -N process>
>>> <Check the stat in another terminal>
>>>
>>> bash# echo 3 > /proc/sys/vm/drop_caches
>>> bash# kill -s SIGUSR1 <pid of glusterfs -N process>
>>> <Check the stat in another terminal>
>>>
>>> Even after dropping caches, if 'in use bytes =' in malloc stats shows a
>>> high value, then it is a leak. If its showing less, but just 'system bytes =
>>> ' is a high value, this means glusterfs is not really consuming high memory,
>>> but the problem is really in the memory allocation segments.
>>>
>>> Regards,
>>> Amar
>>>
>>> NOTE: 'malloc_stats' will be printed to 'stdout' if we enable -DDEBUG
>>> while compiling glusterfs, as it hits performance badly otherwise.
>>>
>>>
>>> 2009/2/23 Gordan Bobic <gordan at bobich.net <mailto:gordan at bobich.net>>
>>>
>>> Dan Parsons wrote:
>>>
>>> I'm having an issue with glusterfs exceeding its cache-size
>>> value. Right now I have it set to 4000MB and I've seen it climb
>>> as high as 4800MB. If I set it to 5000, I've seen it go as high
>>> as 6000MB. This is a problem because it causes me to set the
>>> value very low so that my apps don't get pushed into swap. Is
>>> there any way to fix this? To get it to stick to the limit I set
>>> and not exceed?
>>>
>>>
>>> It's possible you are running into the same memory leak that I'm
>>> seeing, and I'm not using io-cache or any other performance
>>> translators at all. With rootfs on Gluster, doing a kernel compile
>>> (kernel source tree being on NFS, so this won't be contributing to
>>> the bloat, hopefully) makes the glusterfsd bloat by about 80MB per
>>> pass, and never frees it.
>>>
>>> Gordan
>>>
>>>
>>> _______________________________________________
>>> Gluster-devel mailing list
>>> Gluster-devel at nongnu.org <mailto:Gluster-devel at nongnu.org>
>>> http://lists.nongnu.org/mailman/listinfo/gluster-devel
>>>
>>>
>>>
>>>
>>> --
>>> Amar Tumballi
>>> Gluster/GlusterFS Hacker
>>> [bulde on #gluster/irc.gnu.org <http://irc.gnu.org>]
>>> http://www.zresearch.com - Commoditizing Super Storage!
>>>
>>
>>
>>
>> _______________________________________________
>> Gluster-devel mailing list
>> Gluster-devel at nongnu.org
>> http://lists.nongnu.org/mailman/listinfo/gluster-devel
>>
>
>
>
> --
> Amar Tumballi
> Gluster/GlusterFS Hacker
> [bulde on #gluster/irc.gnu.org]
> http://www.zresearch.com - Commoditizing Super Storage!
>
> _______________________________________________
> Gluster-devel mailing list
> Gluster-devel at nongnu.org
> http://lists.nongnu.org/mailman/listinfo/gluster-devel
>
>
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