== sanity test 255a: check 'lfs ladvise -a willread' ===== 10:26:40 (1761316000)
100+0 records in
100+0 records out
104857600 bytes (105 MB, 100 MiB) copied, 2.01402 s, 52.1 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=4
fail_loc=0x237
Asynchronous ladvise shouldn't wait
fail_loc=0
Iter 1/10: reading without willread hint
Iter 1/10: uncached speed: 0.787912
Iter 1/10: OSS cache speed: 0.962062
Iter 1/10: ladvise speed: 1.01032
Iter 2/10: reading without willread hint
Iter 2/10: uncached speed: 0.873244
Iter 2/10: OSS cache speed: 1.12685
Iter 2/10: ladvise speed: 1.15065
Iter 3/10: reading without willread hint
Iter 3/10: uncached speed: 0.842431
Iter 3/10: OSS cache speed: 0.889079
Iter 3/10: ladvise speed: 0.975882
Iter 4/10: reading without willread hint
Iter 4/10: uncached speed: 0.832054
Iter 4/10: OSS cache speed: 1.01687
Iter 4/10: ladvise speed: 1.15148
Iter 5/10: reading without willread hint
Iter 5/10: uncached speed: 0.836656
Iter 5/10: OSS cache speed: 1.01072
Iter 5/10: ladvise speed: 0.990328
Iter 6/10: reading without willread hint
Iter 6/10: uncached speed: 0.81657
Iter 6/10: OSS cache speed: 0.937768
Iter 6/10: ladvise speed: 0.96486
Iter 7/10: reading without willread hint
Iter 7/10: uncached speed: 0.859677
Iter 7/10: OSS cache speed: 0.915601
Iter 7/10: ladvise speed: 0.898516
Iter 8/10: reading without willread hint
Iter 8/10: uncached speed: 0.781061
Iter 8/10: OSS cache speed: 0.997963
Iter 8/10: ladvise speed: 0.973584
Iter 9/10: reading without willread hint
Iter 9/10: uncached speed: 0.810896
Iter 9/10: OSS cache speed: 0.957113
Iter 9/10: ladvise speed: 1.04132
Iter 10/10: reading without willread hint
Iter 10/10: uncached speed: 0.830746
Iter 10/10: OSS cache speed: 1.00529
Iter 10/10: ladvise speed: 1.00365
Average uncached read: .82
Average speedup with OSS cached read:  .98 = +19.51%
Average speedup with ladvise willread:  1.01 = +23.17%
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21871: ð9ÙlÙU: < 20 : syntax error: operand expected (error token is "< 20 ")
/home/green/git/lustre-release/lustre/tests/sanity.sh: line 21885:  1 >  : 1 >  : syntax error: operand expected (error token is ">  ")
running in VM 'kvm', ignore error
 sanity test_255a: @@@@@@ IGNORE (env=kvm): Speedup with willread is less than  .49%, got 1.01% 
  Trace dump:
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6498:error_ignore()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6513:error_not_in_vm()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:21886:ladvise_willread_performance()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:21967:test_255a()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6840:run_one()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6887:run_one_logged()
  = /home/green/git/lustre-release/lustre/tests/test-framework.sh:6713:run_test()
  = /home/green/git/lustre-release/lustre/tests/sanity.sh:21969:main()