== sanity test 255a: check 'lfs ladvise -a willread' ===== 12:09:29 (1711987769)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 6.6227 s, 15.8 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-ffff8800b6798800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.046098
Iter 1/10: OSS cache speed: 0.0107921
Iter 1/10: ladvise speed: 0.0186869
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.00460496
Iter 2/10: OSS cache speed: 0.00110326
Iter 2/10: ladvise speed: 0.00302839
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.207744
Iter 3/10: OSS cache speed: 0.0368108
Iter 3/10: ladvise speed: 0.158647
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.234382
Iter 4/10: OSS cache speed: 0.200333
Iter 4/10: ladvise speed: 0.158969
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.0618305
Iter 5/10: OSS cache speed: 0.116397
Iter 5/10: ladvise speed: 0.0108568
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.0201466
Iter 6/10: OSS cache speed: 0.0177749
Iter 6/10: ladvise speed: 0.0480113
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.0361007
Iter 7/10: OSS cache speed: 0.0291392
Iter 7/10: ladvise speed: 0.0235836
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.0690274
Iter 8/10: OSS cache speed: 0.246151
Iter 8/10: ladvise speed: 0.176751
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.176582
Iter 9/10: OSS cache speed: 0.0337082
Iter 9/10: ladvise speed: 0.14619
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.0816946
Iter 10/10: OSS cache speed: 0.129916
Iter 10/10: ladvise speed: 0.143915
Average uncached read: .09
Average speedup with OSS cached read: .08 = +-11.11%
Average speedup with ladvise willread: .08 = +-11.11%
Speedup with OSS cached read less than 20%, got -11.11%. Skipping ladvise willread check.
fail_loc=0