== sanity test 255a: check 'lfs ladvise -a willread' ===== 12:26:20 (1744129580)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.52311 s, 41.6 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-ffff8800b6cf4800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 2.68446
Iter 1/10: OSS cache speed: 2.75486
Iter 1/10: ladvise speed: 2.81527
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.93136
Iter 2/10: OSS cache speed: 2.22964
Iter 2/10: ladvise speed: 2.62206
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.5424
Iter 3/10: OSS cache speed: 2.68632
Iter 3/10: ladvise speed: 2.7762
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.7452
Iter 4/10: OSS cache speed: 2.86349
Iter 4/10: ladvise speed: 2.88711
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.85283
Iter 5/10: OSS cache speed: 2.43843
Iter 5/10: ladvise speed: 2.47673
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.52091
Iter 6/10: OSS cache speed: 2.57284
Iter 6/10: ladvise speed: 2.65052
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.77004
Iter 7/10: OSS cache speed: 2.61411
Iter 7/10: ladvise speed: 2.65179
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 2.73733
Iter 8/10: OSS cache speed: 2.6047
Iter 8/10: ladvise speed: 2.68739
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.50399
Iter 9/10: OSS cache speed: 2.30983
Iter 9/10: ladvise speed: 2.5867
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.46137
Iter 10/10: OSS cache speed: 2.62385
Iter 10/10: ladvise speed: 2.2286
Average uncached read: 2.57
Average speedup with OSS cached read:  2.56 = +0%
Average speedup with ladvise willread:  2.63 = +2%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0