== sanity test 255a: check 'lfs ladvise -a willread' ===== 06:17:56 (1787566676)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 11.8735 s, 8.8 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-ffff929e82e65000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.375968
Iter 1/10: OSS cache speed: 0.281914
Iter 1/10: ladvise speed: 0.321932
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.291842
Iter 2/10: OSS cache speed: 0.325633
Iter 2/10: ladvise speed: 0.324053
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.270942
Iter 3/10: OSS cache speed: 0.312414
Iter 3/10: ladvise speed: 0.297443
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.335823
Iter 4/10: OSS cache speed: 0.397524
Iter 4/10: ladvise speed: 0.354511
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.33763
Iter 5/10: OSS cache speed: 0.397212
Iter 5/10: ladvise speed: 0.330063
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.352987
Iter 6/10: OSS cache speed: 0.3464
Iter 6/10: ladvise speed: 0.327477
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.3351
Iter 7/10: OSS cache speed: 0.381223
Iter 7/10: ladvise speed: 0.311475
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.373817
Iter 8/10: OSS cache speed: 0.331935
Iter 8/10: ladvise speed: 0.350248
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.374314
Iter 9/10: OSS cache speed: 0.330249
Iter 9/10: ladvise speed: 0.397014
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.331068
Iter 10/10: OSS cache speed: 0.287864
Iter 10/10: ladvise speed: 0.381257
Average uncached read: .33
Average speedup with OSS cached read:  .33 = +0%
Average speedup with ladvise willread:  .33 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0