The summary file and stdout contain lines like...
-ost 8 sz 67108864K rsz 1024 obj 8 thr 8 write 613.54 [ 64.00, 82.00]
+ost 8 sz 67108864K rsz 1024K obj 8 thr 8 write 613.54 [ 64.00, 82.00]
ost 8 is the total number of OSTs under test.
-sz 67108864K is the total amount of data read or written (in KB).
-rsz 1024 is the record size (size of each echo_client I/O, in KB).
+sz 67108864K is the total amount of data read or written (in bytes).
+rsz 1024K is the record size (size of each echo_client I/O, in bytes).
obj 8 is the total number of objects over all OSTs
thr 8 is the total number of threads over all OSTs and objects
write is the test name. If more tests have been specified they