== sanity test 255a: check 'lfs ladvise -a willread' ===== 13:13:21 (1783444401)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 16.3499 s, 6.4 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-ffff9ffa912ad000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.262274
Iter 1/10: OSS cache speed: 0.28801
Iter 1/10: ladvise speed: 0.307308
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.302367
Iter 2/10: OSS cache speed: 0.30744
Iter 2/10: ladvise speed: 0.316761
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.277428
Iter 3/10: OSS cache speed: 0.286241
Iter 3/10: ladvise speed: 0.265923
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.277448
Iter 4/10: OSS cache speed: 0.294736
Iter 4/10: ladvise speed: 0.276533
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.293659
Iter 5/10: OSS cache speed: 0.312499
Iter 5/10: ladvise speed: 0.281615
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.263148
Iter 6/10: OSS cache speed: 0.265455
Iter 6/10: ladvise speed: 0.297701
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.298785
Iter 7/10: OSS cache speed: 0.300335
Iter 7/10: ladvise speed: 0.28938
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.353189
Iter 8/10: OSS cache speed: 0.359507
Iter 8/10: ladvise speed: 0.382178
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.402878
Iter 9/10: OSS cache speed: 0.395822
Iter 9/10: ladvise speed: 0.418959
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.408163
Iter 10/10: OSS cache speed: 0.407989
Iter 10/10: ladvise speed: 0.441441
Average uncached read: .31
Average speedup with OSS cached read:  .32 = +3%
Average speedup with ladvise willread:  .32 = +3%
Speedup with OSS cached read less than 20%,  got 3%. Skipping ladvise willread check.
fail_loc=0