== sanity test 255a: check 'lfs ladvise -a willread' ===== 00:58:54 (1726117134)
100+0 records in
100+0 records out
104857600 bytes (105 MB) copied, 2.22586 s, 47.1 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-ffff8800b6519000.hybrid_io=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 1.42905
Iter 1/10: OSS cache speed: 1.71155
Iter 1/10: ladvise speed: 1.65601
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 1.59527
Iter 2/10: OSS cache speed: 1.80936
Iter 2/10: ladvise speed: 1.67259
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 1.5869
Iter 3/10: OSS cache speed: 1.66128
Iter 3/10: ladvise speed: 1.63121
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 1.39468
Iter 4/10: OSS cache speed: 1.69299
Iter 4/10: ladvise speed: 1.94727
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 1.75431
Iter 5/10: OSS cache speed: 1.64286
Iter 5/10: ladvise speed: 1.67455
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 1.50661
Iter 6/10: OSS cache speed: 1.74238
Iter 6/10: ladvise speed: 1.75402
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 1.44697
Iter 7/10: OSS cache speed: 1.60973
Iter 7/10: ladvise speed: 1.63902
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 1.71703
Iter 8/10: OSS cache speed: 1.80168
Iter 8/10: ladvise speed: 1.90808
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 1.54014
Iter 9/10: OSS cache speed: 1.7382
Iter 9/10: ladvise speed: 2.42216
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 2.16502
Iter 10/10: OSS cache speed: 2.87965
Iter 10/10: ladvise speed: 2.64375
Average uncached read: 1.61
Average speedup with OSS cached read: 1.82 = +13.04%
Average speedup with ladvise willread: 1.89 = +17.39%
Speedup with OSS cached read less than 20%, got 13.04%. Skipping ladvise willread check.
fail_loc=0