== sanity test 255a: check 'lfs ladvise -a willread' ===== 21:21:18 (1745457678)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.92926 s, 35.8 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-72100c94-edda-41d8-b9e3-ee69be75197f.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.81425
Iter 1/10: OSS cache speed: 2.99344
Iter 1/10: ladvise speed: 2.97699
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.71565
Iter 2/10: OSS cache speed: 3.02004
Iter 2/10: ladvise speed: 3.12593
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.79924
Iter 3/10: OSS cache speed: 3.00897
Iter 3/10: ladvise speed: 2.97511
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.79384
Iter 4/10: OSS cache speed: 2.88832
Iter 4/10: ladvise speed: 3.02468
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.70623
Iter 5/10: OSS cache speed: 3.04326
Iter 5/10: ladvise speed: 3.00154
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.26843
Iter 6/10: OSS cache speed: 2.93167
Iter 6/10: ladvise speed: 3.07041
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.73288
Iter 7/10: OSS cache speed: 3.27172
Iter 7/10: ladvise speed: 2.79185
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.48967
Iter 8/10: OSS cache speed: 3.11841
Iter 8/10: ladvise speed: 3.20908
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.47368
Iter 9/10: OSS cache speed: 2.57501
Iter 9/10: ladvise speed: 3.15145
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.40498
Iter 10/10: OSS cache speed: 2.75965
Iter 10/10: ladvise speed: 2.78195
Average uncached read: 2.61
Average speedup with OSS cached read:  2.96 = +13%
Average speedup with ladvise willread:  3.01 = +15%
Speedup with OSS cached read less than 20%,  got 13%. Skipping ladvise willread check.
fail_loc=0