== sanity test 255a: check 'lfs ladvise -a willread' ===== 13:38:32 (1726853912)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 3.94177 s, 26.6 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-ffff8800b58fa000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.759009
Iter 1/10: OSS cache speed: 0.775191
Iter 1/10: ladvise speed: 0.811845
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.787444
Iter 2/10: OSS cache speed: 0.823976
Iter 2/10: ladvise speed: 0.831107
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.21443
Iter 3/10: OSS cache speed: 0.980626
Iter 3/10: ladvise speed: 1.09482
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.11402
Iter 4/10: OSS cache speed: 1.38841
Iter 4/10: ladvise speed: 1.65661
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.60326
Iter 5/10: OSS cache speed: 1.88516
Iter 5/10: ladvise speed: 1.92489
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.9704
Iter 6/10: OSS cache speed: 2.26627
Iter 6/10: ladvise speed: 2.38097
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.37621
Iter 7/10: OSS cache speed: 2.40013
Iter 7/10: ladvise speed: 2.263
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.33489
Iter 8/10: OSS cache speed: 2.27871
Iter 8/10: ladvise speed: 2.4061
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.35986
Iter 9/10: OSS cache speed: 2.25948
Iter 9/10: ladvise speed: 2.10974
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.25713
Iter 10/10: OSS cache speed: 2.37237
Iter 10/10: ladvise speed: 2.37146
Average uncached read: 1.67
Average speedup with OSS cached read: 1.74 = +4.19%
Average speedup with ladvise willread: 1.78 = +6.58%
Speedup with OSS cached read less than 20%, got 4.19%. Skipping ladvise willread check.
fail_loc=0