Generate system performance data for performance related issues
In some cases it may be necessary to generate system performance data to assist further with analysing what is occuring. Use the following details to generate the performance details:
Rebuild your client to support debug symbols:
git clone https://github.com/abraunegg/onedrive.git
cd onedrive
./configure --enable-debug
make clean; make;
sudo make install
Install the application including any debug symbols generated. You may also need to install your Linux Kernel Debug Symbols as well.
Run the client with the following option set in your 'config' file:
display_processing_time = "true"
This will print important performance related processing timings for each major function the application performs, which will help to drill down what function is potentially causing your performance concern.
At the end of a sync cycle, also take note of the following data point:
Total number of OneDrive items processed: XXXXXXXX
Microsoft recommends storing no more that 300,000 files & folders in a single OneDrive account. If you are getting up towards this number, how and what you store on OneDrive needs to be looked at first.
Secondly, if you are storing items close to this value online, it is going to take time to process this data when performing a full sync. OneDrive sends data to this client in ~200 item lots as a change set (this is hardcoded by Microsoft, there is zero way to change this). A change set will take approx 1-1.5 seconds for this client to process depending on how many items are present in the change set.
Example: If you have 200k items on OneDrive, this means approx 1000 change set bundles will be sent to the client. Assuming 1.5 seconds to process each one = 1500 seconds = 25 minutes to process your online data.
You can adjust when a 'full scan' is performed by adjusting the following 'config' options:
cat /proc/cpuinfo
Memory Information
cat /proc/meminfo
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
Run for at least ~30 minutes:
iostat -dx 2
Run strace on the application as it is running:
ps -AL |grep process_namestrace -c -p <PID>
Example:
[alex@centos7full ~]$ ps -AL | grep onedrive
16753 16753 pts/0 00:00:00 onedrive
[alex@centos7full ~]$ strace -c -p 16753
strace: Process 16753 attached
^Cstrace: Process 16753 detached
% time seconds usecs/call calls errors syscall
------ ----------- ----------- --------- --------- ----------------
20.98 0.000823 16 53 nanosleep
17.31 0.000679 679 1 open
17.23 0.000676 169 4 sendto
13.61 0.000534 178 3 stat
10.32 0.000405 4 102 fcntl
8.56 0.000336 4 87 poll
3.77 0.000148 4 38 write
3.24 0.000127 32 4 fsync
1.33 0.000052 2 23 lseek
0.97 0.000038 2 16 recvfrom
0.59 0.000023 12 2 close
0.54 0.000021 21 1 unlink
0.46 0.000018 9 2 read
0.41 0.000016 8 2 1 access
0.25 0.000010 3 4 fstat
0.18 0.000007 7 1 restart_syscall
0.10 0.000004 2 2 getdents
0.10 0.000004 4 1 openat
0.05 0.000002 1 4 lstat
------ ----------- ----------- --------- --------- ----------------
100.00 0.003923 350 1 total
Run perf on the application as it is running:
ps -AL |grep process_nameperf top --call-graph dwarf --pid <PID>
Example:
- 95,99% 0,00% onedrive [unknown] [k] 0xffffffffffffffff ◆
- 0xffffffffffffffff ▒
- 61,14% _D4sync10SyncEngine17uploadDifferencesMFS6itemdb4ItemZv ▒
_D4sync10SyncEngine20uploadDirDifferencesMFS6itemdb4ItemAyaZv ▒
_D4sync10SyncEngine17uploadDifferencesMFS6itemdb4ItemZv ▒
_D4sync10SyncEngine20uploadDirDifferencesMFS6itemdb4ItemAyaZv ▒
- _D4sync10SyncEngine17uploadDifferencesMFS6itemdb4ItemZv ▒
- 61,13% _D4sync10SyncEngine20uploadDirDifferencesMFS6itemdb4ItemAyaZv ▒
- 61,13% _D4sync10SyncEngine17uploadDifferencesMFS6itemdb4ItemZv ▒
- 61,09% _D4sync10SyncEngine20uploadDirDifferencesMFS6itemdb4ItemAyaZv ▒
- 61,08% _D4sync10SyncEngine17uploadDifferencesMFS6itemdb4ItemZv ▒
- 61,03% _D4sync10SyncEngine20uploadDirDifferencesMFS6itemdb4ItemAyaZv ▒
_D4sync10SyncEngine17uploadDifferencesMFS6itemdb4ItemZv ▒
_D4sync10SyncEngine20uploadDirDifferencesMFS6itemdb4ItemAyaZv ▒
_D4sync10SyncEngine17uploadDifferencesMFS6itemdb4ItemZv ▒
- _D4sync10SyncEngine20uploadDirDifferencesMFS6itemdb4ItemAyaZv ▒
- 60,65% _D6itemdb12ItemDatabase14selectChildrenMFAxaQdZASQBv4Item ▒
- 41,31% _D6sqlite9Statement6Result4stepMFZv ▒
sqlite3_step ▒
sqlite3Step (inlined) ▒
- sqlite3VdbeExec ▒
- 41,31% sqlite3VdbeCursorMoveto (inlined) ▒
handleDeferredMoveto ▒
sqlite3BtreeMovetoUnpacked ▒
getAndInitPage ▒
sqlite3PagerGet (inlined) ▒
getPageNormal ▒
- readDbPage ▒
- 39,74% sqlite3OsRead (inlined) ▒
- unixRead ▒
- seekAndRead (inlined) ▒
- __libc_pread64 ▒
- 32,17% entry_SYSCALL_64 ▒
- 31,72% do_syscall_64 ▒
- 29,92% sys_pread64 ▒
- 27,99% vfs_read ▒
- 26,21% __vfs_read ▒
- 26,08% new_sync_read ▒
- 25,84% ext4_file_read_iter ▒
- 25,38% generic_file_read_iter ▒
- 17,04% copy_page_to_iter ▒
16,57% copy_user_enhanced_fast_string ▒
+ 6,41% pagecache_get_page ▒
+ 1,26% rw_verify_area ▒
+ 1,26% __fdget ▒
0,75% syscall_trace_enter ▒
0,64% syscall_slow_exit_work ▒
3,61% syscall_return_via_sysret ▒
2,33% 0xfffffe000016601b ▒
1,09% sqlite3WalFindFrame ▒
+ 19,34% _D6sqlite9Statement4execMFZSQBaQw6Result ▒
- Attach as txt file to issue that has been raised
- Email as txt file to support@mynas.com.au