== sanity test 255a: check 'lfs ladvise -a willread' ===== 23:40:45 (1746157245)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 6.66952 s, 15.7 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-ffff8800b639f800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.564145
Iter 1/10: OSS cache speed: 0.582446
Iter 1/10: ladvise speed: 0.569017
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.551912
Iter 2/10: OSS cache speed: 0.568651
Iter 2/10: ladvise speed: 0.603443
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.545386
Iter 3/10: OSS cache speed: 0.539205
Iter 3/10: ladvise speed: 0.536638
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.547262
Iter 4/10: OSS cache speed: 0.591137
Iter 4/10: ladvise speed: 0.597162
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.583632
Iter 5/10: OSS cache speed: 0.606907
Iter 5/10: ladvise speed: 0.626013
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.60361
Iter 6/10: OSS cache speed: 0.594236
Iter 6/10: ladvise speed: 0.672491
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.571965
Iter 7/10: OSS cache speed: 0.564263
Iter 7/10: ladvise speed: 0.589058
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.592077
Iter 8/10: OSS cache speed: 0.620089
Iter 8/10: ladvise speed: 0.635384
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.626105
Iter 9/10: OSS cache speed: 0.574555
Iter 9/10: ladvise speed: 0.573305
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.580005
Iter 10/10: OSS cache speed: 0.530164
Iter 10/10: ladvise speed: 0.55845
Average uncached read: .57
Average speedup with OSS cached read:  .57 = +0%
Average speedup with ladvise willread:  .59 = +3%
Speedup with OSS cached read less than 20%,  got 0%. Skipping ladvise willread check.
fail_loc=0