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Generate system performance data for performance related issues
abraunegg edited this page Jan 29, 2020
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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.
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 [email protected]