mysql strace fsync,fdatasync

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[[email protected] test]# strace -f -F -e trace=fdatasync,fsync -p 4043

Process 8703 attached with 23 threads - interrupt to quit[pid 7089] fsync(9) = 0[pid 4063] fsync(9) = 0[pid 4063] fsync(9) = 0[pid 4061] fsync(4) = 0[pid 4050] fsync(4) = 0[pid 4050] fsync(20) = 0[pid 4061] fsync(4) = 0[pid 4050] fsync(12) = 0[pid 4061] fsync(4) = 0[pid 4050] fsync(14) = 0[pid 4061] fsync(4) = 0[pid 4050] fsync(4) = 0[pid 4061] fsync(4) = 0[pid 4052] fsync(4) = 0[pid 4061] fsync(4) = 0[pid 4053] fsync(4) = 0[pid 4045] fsync(9) = 0

 

[[email protected] test]# strace -f -F -c -p 4043  

% time     seconds  usecs/call     calls    errors syscall------ ----------- ----------- --------- --------- ---------------- 60.99    0.154980        1084       143           io_getevents 23.66    0.060119         911        66        16 futex 10.23    0.025997        1625        16           select  2.36    0.006000        1200         5         4 restart_syscall  1.97    0.005000         625         8           fsync  0.39    0.001000          40        25           clock_gettime  0.39    0.000999         250         4           pwrite  0.00    0.000000           0         1           write  0.00    0.000000           0         4           sched_yield  0.00    0.000000           0         1           sendto  0.00    0.000000           0         3         1 recvfrom  0.00    0.000000           0         4           io_submit------ ----------- ----------- --------- --------- ----------------100.00    0.254095                   280        21 total

 

mysql strace fsync,fdatasync