== sanity test 255a: check 'lfs ladvise -a willread' ===== 22:05:44 (1789265144)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 12.3658 s, 8.5 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-ffff901c05561800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.411456
Iter 1/10: OSS cache speed: 0.397745
Iter 1/10: ladvise speed: 0.406921
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.420199
Iter 2/10: OSS cache speed: 0.387711
Iter 2/10: ladvise speed: 0.400002
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.407609
Iter 3/10: OSS cache speed: 0.385983
Iter 3/10: ladvise speed: 0.408167
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.406498
Iter 4/10: OSS cache speed: 0.422181
Iter 4/10: ladvise speed: 0.385435
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.367194
Iter 5/10: OSS cache speed: 0.425421
Iter 5/10: ladvise speed: 0.435821
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.413569
Iter 6/10: OSS cache speed: 0.404029
Iter 6/10: ladvise speed: 0.426462
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.384305
Iter 7/10: OSS cache speed: 0.449551
Iter 7/10: ladvise speed: 0.36787
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.454051
Iter 8/10: OSS cache speed: 0.445198
Iter 8/10: ladvise speed: 0.426266
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.431624
Iter 9/10: OSS cache speed: 0.397395
Iter 9/10: ladvise speed: 0.420141
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.388384
Iter 10/10: OSS cache speed: 0.346637
Iter 10/10: ladvise speed: 0.332618
Average uncached read: .40
Average speedup with OSS cached read:  .40 = +0%
Average speedup with ladvise willread:  .40 = +0%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0