== sanity test 255a: check 'lfs ladvise -a willread' ===== 08:50:12 (1724763012)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.28195 s, 46.0 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-ffff8800b63af800.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 1.87017
Iter 1/10: OSS cache speed: 1.95898
Iter 1/10: ladvise speed: 2.30069
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 2.3735
Iter 2/10: OSS cache speed: 2.04971
Iter 2/10: ladvise speed: 2.51371
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 2.50724
Iter 3/10: OSS cache speed: 2.46395
Iter 3/10: ladvise speed: 2.81724
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 2.51961
Iter 4/10: OSS cache speed: 2.76558
Iter 4/10: ladvise speed: 2.4859
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 2.52253
Iter 5/10: OSS cache speed: 2.35601
Iter 5/10: ladvise speed: 2.66192
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 2.66985
Iter 6/10: OSS cache speed: 2.60818
Iter 6/10: ladvise speed: 2.55881
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 2.50516
Iter 7/10: OSS cache speed: 2.48059
Iter 7/10: ladvise speed: 2.36832
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.27568
Iter 8/10: OSS cache speed: 1.8216
Iter 8/10: ladvise speed: 1.92997
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 2.53287
Iter 9/10: OSS cache speed: 2.63543
Iter 9/10: ladvise speed: 2.53635
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.57917
Iter 10/10: OSS cache speed: 2.60348
Iter 10/10: ladvise speed: 2.64933
Average uncached read: 2.33
Average speedup with OSS cached read: 2.37 = +1.71%
Average speedup with ladvise willread: 2.48 = +6.43%
Speedup with OSS cached read less than 20%, got 1.71%. Skipping ladvise willread check.
fail_loc=0