== sanity test 255a: check 'lfs ladvise -a willread' ===== 05:49:05 (1788688145)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 9.78694 s, 10.7 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-ffff8ab590ae0000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.446356
Iter 1/10: OSS cache speed: 0.422884
Iter 1/10: ladvise speed: 0.448932
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.465452
Iter 2/10: OSS cache speed: 0.474934
Iter 2/10: ladvise speed: 0.401927
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.491864
Iter 3/10: OSS cache speed: 0.431433
Iter 3/10: ladvise speed: 0.4525
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.399915
Iter 4/10: OSS cache speed: 0.432728
Iter 4/10: ladvise speed: 0.437943
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.430583
Iter 5/10: OSS cache speed: 0.448423
Iter 5/10: ladvise speed: 0.499497
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.459711
Iter 6/10: OSS cache speed: 0.438175
Iter 6/10: ladvise speed: 0.453752
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.456285
Iter 7/10: OSS cache speed: 0.463398
Iter 7/10: ladvise speed: 0.476521
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.485942
Iter 8/10: OSS cache speed: 0.479771
Iter 8/10: ladvise speed: 0.474554
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.462486
Iter 9/10: OSS cache speed: 0.488444
Iter 9/10: ladvise speed: 0.48907
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.441169
Iter 10/10: OSS cache speed: 0.497028
Iter 10/10: ladvise speed: 0.482102
Average uncached read: .45
Average speedup with OSS cached read:  .45 = +0%
Average speedup with ladvise willread:  .46 = +2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0