== sanity test 255a: check 'lfs ladvise -a willread' ===== 05:35:04 (1787823304)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.1585 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-ffff8d0103932000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.327986
Iter 1/10: OSS cache speed: 0.382443
Iter 1/10: ladvise speed: 0.392124
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.354199
Iter 2/10: OSS cache speed: 0.326415
Iter 2/10: ladvise speed: 0.348055
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.389675
Iter 3/10: OSS cache speed: 0.294609
Iter 3/10: ladvise speed: 0.367568
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.353657
Iter 4/10: OSS cache speed: 0.337547
Iter 4/10: ladvise speed: 0.346919
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.352577
Iter 5/10: OSS cache speed: 0.330622
Iter 5/10: ladvise speed: 0.332269
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.337204
Iter 6/10: OSS cache speed: 0.370163
Iter 6/10: ladvise speed: 0.328814
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.365032
Iter 7/10: OSS cache speed: 0.326707
Iter 7/10: ladvise speed: 0.325957
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.317598
Iter 8/10: OSS cache speed: 0.347803
Iter 8/10: ladvise speed: 0.346778
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.307018
Iter 9/10: OSS cache speed: 0.345011
Iter 9/10: ladvise speed: 0.325114
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.347867
Iter 10/10: OSS cache speed: 0.363736
Iter 10/10: ladvise speed: 0.329238
Average uncached read: .34
Average speedup with OSS cached read:  .34 = +0%
Average speedup with ladvise willread:  .34 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0