== sanity test 255a: check 'lfs ladvise -a willread' ===== 13:44:08 (1780854248)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 9.7989 s, 10.7 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-ffff9192e26c0000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.417767
Iter 1/10: OSS cache speed: 0.463378
Iter 1/10: ladvise speed: 0.437857
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.351373
Iter 2/10: OSS cache speed: 0.46948
Iter 2/10: ladvise speed: 0.412914
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.415279
Iter 3/10: OSS cache speed: 0.446231
Iter 3/10: ladvise speed: 0.475354
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.440542
Iter 4/10: OSS cache speed: 0.448742
Iter 4/10: ladvise speed: 0.325168
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.457558
Iter 5/10: OSS cache speed: 0.423272
Iter 5/10: ladvise speed: 0.441695
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.439076
Iter 6/10: OSS cache speed: 0.463492
Iter 6/10: ladvise speed: 0.590056
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.53122
Iter 7/10: OSS cache speed: 0.616401
Iter 7/10: ladvise speed: 0.594359
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.58101
Iter 8/10: OSS cache speed: 0.650707
Iter 8/10: ladvise speed: 0.632219
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.602499
Iter 9/10: OSS cache speed: 0.687801
Iter 9/10: ladvise speed: 0.727585
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.621489
Iter 10/10: OSS cache speed: 0.677069
Iter 10/10: ladvise speed: 0.692361
Average uncached read: .48
Average speedup with OSS cached read:  .53 = +10%
Average speedup with ladvise willread:  .53 = +10%
Speedup with OSS cached read less than 20%,  got 10%. Skipping ladvise willread check.
fail_loc=0