== sanity test 255a: check 'lfs ladvise -a willread' ===== 14:33:54 (1788287634)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.208 s, 8.6 MB/s
ladvise: range [2, 1] is invalid
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

ladvise: range [2, 2] is invalid
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

ladvise: conflicting arguments of -l and -e
Provide servers with advice about access patterns for a file.
usage: ladvise [--advice|-a ADVICE] [--start|-s START[kMGT]]
               [--background|-b] [--unset|-u]

               {--end|-e END[kMGT]|--length|-l LENGTH[kMGT]}
               {[--mode|-m [READ,WRITE]}
               <file> ...

Synchronous ladvise should wait
fail_val=8
fail_loc=0x237
Asynchronous ladvise shouldn't wait
llite.lustre-ffff89b002f36000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.451749
Iter 1/10: OSS cache speed: 0.450574
Iter 1/10: ladvise speed: 0.4374
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.477827
Iter 2/10: OSS cache speed: 0.468205
Iter 2/10: ladvise speed: 0.487945
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.42446
Iter 3/10: OSS cache speed: 0.436592
Iter 3/10: ladvise speed: 0.375485
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.385342
Iter 4/10: OSS cache speed: 0.407078
Iter 4/10: ladvise speed: 0.446566
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.4425
Iter 5/10: OSS cache speed: 0.414949
Iter 5/10: ladvise speed: 0.409844
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.419354
Iter 6/10: OSS cache speed: 0.46381
Iter 6/10: ladvise speed: 0.446225
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.465059
Iter 7/10: OSS cache speed: 0.453518
Iter 7/10: ladvise speed: 0.449264
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.488264
Iter 8/10: OSS cache speed: 0.430548
Iter 8/10: ladvise speed: 0.444722
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.419776
Iter 9/10: OSS cache speed: 0.440064
Iter 9/10: ladvise speed: 0.444007
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.440207
Iter 10/10: OSS cache speed: 0.448271
Iter 10/10: ladvise speed: 0.414062
Average uncached read: .44
Average speedup with OSS cached read:  .44 = +0%
Average speedup with ladvise willread:  .43 = +-2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0