== sanity test 255a: check 'lfs ladvise -a willread' ===== 10:04:12 (1746626652)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.53724 s, 41.3 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-ffff8800b5c26000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.28587
Iter 1/10: OSS cache speed: 2.73347
Iter 1/10: ladvise speed: 2.67626
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.80911
Iter 2/10: OSS cache speed: 2.75533
Iter 2/10: ladvise speed: 2.72071
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.63026
Iter 3/10: OSS cache speed: 2.56963
Iter 3/10: ladvise speed: 2.48891
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.74635
Iter 4/10: OSS cache speed: 2.84634
Iter 4/10: ladvise speed: 2.75273
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.71141
Iter 5/10: OSS cache speed: 1.81016
Iter 5/10: ladvise speed: 1.74992
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.43714
Iter 6/10: OSS cache speed: 2.64311
Iter 6/10: ladvise speed: 2.79905
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.95198
Iter 7/10: OSS cache speed: 2.89139
Iter 7/10: ladvise speed: 2.73902
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.32865
Iter 8/10: OSS cache speed: 2.60257
Iter 8/10: ladvise speed: 2.86163
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.58093
Iter 9/10: OSS cache speed: 2.58887
Iter 9/10: ladvise speed: 2.78145
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.64946
Iter 10/10: OSS cache speed: 2.6897
Iter 10/10: ladvise speed: 2.68916
Average uncached read: 2.61
Average speedup with OSS cached read:  2.61 = +0%
Average speedup with ladvise willread:  2.62 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0