== sanity test 255a: check 'lfs ladvise -a willread' ===== 08:49:43 (1724762983)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.91058 s, 36.0 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-ffff8800b5cc2000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 1.01675
Iter 1/10: OSS cache speed: 1.07191
Iter 1/10: ladvise speed: 1.60262
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.8645
Iter 2/10: OSS cache speed: 1.92338
Iter 2/10: ladvise speed: 1.93735
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.73104
Iter 3/10: OSS cache speed: 1.83096
Iter 3/10: ladvise speed: 2.02543
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.03625
Iter 4/10: OSS cache speed: 2.06263
Iter 4/10: ladvise speed: 2.18555
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.53122
Iter 5/10: OSS cache speed: 2.23325
Iter 5/10: ladvise speed: 2.34887
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.66952
Iter 6/10: OSS cache speed: 2.67633
Iter 6/10: ladvise speed: 2.63195
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.65841
Iter 7/10: OSS cache speed: 1.68831
Iter 7/10: ladvise speed: 2.04124
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.74991
Iter 8/10: OSS cache speed: 2.4152
Iter 8/10: ladvise speed: 2.72757
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.71736
Iter 9/10: OSS cache speed: 2.63128
Iter 9/10: ladvise speed: 2.77178
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.65419
Iter 10/10: OSS cache speed: 2.5566
Iter 10/10: ladvise speed: 2.6036
Average uncached read: 2.16
Average speedup with OSS cached read: 2.10 = +-2.77%
Average speedup with ladvise willread: 2.28 = +5.55%
Speedup with OSS cached read less than 20%, got -2.77%. Skipping ladvise willread check.
fail_loc=0