== sanity test 255a: check 'lfs ladvise -a willread' ===== 23:04:32 (1718852672)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.38046 s, 44.0 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-ffff8800b5927800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 1.67007
Iter 1/10: OSS cache speed: 1.79238
Iter 1/10: ladvise speed: 1.75904
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.75969
Iter 2/10: OSS cache speed: 2.32886
Iter 2/10: ladvise speed: 1.70396
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.05429
Iter 3/10: OSS cache speed: 2.14155
Iter 3/10: ladvise speed: 1.60067
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.82556
Iter 4/10: OSS cache speed: 2.82384
Iter 4/10: ladvise speed: 3.14662
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.43687
Iter 5/10: OSS cache speed: 2.22446
Iter 5/10: ladvise speed: 1.75936
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.77529
Iter 6/10: OSS cache speed: 1.59538
Iter 6/10: ladvise speed: 1.82931
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.58667
Iter 7/10: OSS cache speed: 1.58381
Iter 7/10: ladvise speed: 1.67657
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.40483
Iter 8/10: OSS cache speed: 1.61977
Iter 8/10: ladvise speed: 1.74741
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.49006
Iter 9/10: OSS cache speed: 2.15313
Iter 9/10: ladvise speed: 1.80193
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 1.5996
Iter 10/10: OSS cache speed: 2.85355
Iter 10/10: ladvise speed: 2.69804
Average uncached read: 1.86
Average speedup with OSS cached read: 2.11 = +13.44%
Average speedup with ladvise willread: 1.97 = +5.91%
Speedup with OSS cached read less than 20%, got 13.44%. Skipping ladvise willread check.
fail_loc=0