== sanity test 255a: check 'lfs ladvise -a willread' ===== 02:49:48 (1727765388)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 3.74135 s, 28.0 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-ffff8800b3b06000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.871529
Iter 1/10: OSS cache speed: 0.964893
Iter 1/10: ladvise speed: 1.05246
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.864955
Iter 2/10: OSS cache speed: 0.960249
Iter 2/10: ladvise speed: 0.873873
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.816085
Iter 3/10: OSS cache speed: 0.954355
Iter 3/10: ladvise speed: 0.974715
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.869228
Iter 4/10: OSS cache speed: 1.06244
Iter 4/10: ladvise speed: 0.889003
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.752098
Iter 5/10: OSS cache speed: 0.753394
Iter 5/10: ladvise speed: 0.713785
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.701195
Iter 6/10: OSS cache speed: 0.828347
Iter 6/10: ladvise speed: 0.841281
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.720907
Iter 7/10: OSS cache speed: 0.817803
Iter 7/10: ladvise speed: 0.768886
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.773792
Iter 8/10: OSS cache speed: 0.890168
Iter 8/10: ladvise speed: 0.876088
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.77624
Iter 9/10: OSS cache speed: 0.915348
Iter 9/10: ladvise speed: 0.896774
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.725417
Iter 10/10: OSS cache speed: 0.888624
Iter 10/10: ladvise speed: 0.951634
Average uncached read: .78
Average speedup with OSS cached read: .90 = +15.38%
Average speedup with ladvise willread: .88 = +12.82%
Speedup with OSS cached read less than 20%, got 15.38%. Skipping ladvise willread check.
fail_loc=0