== sanity test 101a: check read-ahead for random reads === 16:28:12 (1748982492) nreads: 10000 file size: 96MB 17.055952s, 38.4241MB/s osc.lustre-OST0000-osc-ffff88012a6a0000.rpc_stats= snapshot_time: 1748982510.576498138 secs.nsecs start_time: 1748982492.739269039 secs.nsecs elapsed_time: 17.837229099 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 pending write pages: 9 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 0 0 0 | 0 0 0 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 0 0 0 | 0 0 0 read write offset rpcs % cum % | rpcs % cum % 0: 0 0 0 | 0 0 0 osc.lustre-OST0001-osc-ffff88012a6a0000.rpc_stats= snapshot_time: 1748982510.576699651 secs.nsecs start_time: 1748982492.739345536 secs.nsecs elapsed_time: 17.837354115 secs.nsecs read RPCs in flight: 0 write RPCs in flight: 0 pending write pages: 964 pending read pages: 0 read write pages per rpc rpcs % cum % | rpcs % cum % 1: 0 0 0 | 0 0 0 2: 0 0 0 | 0 0 0 4: 0 0 0 | 0 0 0 8: 0 0 0 | 0 0 0 16: 6585 100 100 | 0 0 0 32: 0 0 100 | 0 0 0 64: 0 0 100 | 0 0 0 128: 0 0 100 | 0 0 0 256: 0 0 100 | 0 0 0 512: 0 0 100 | 0 0 0 1024: 0 0 100 | 24 100 100 read write rpcs in flight rpcs % cum % | rpcs % cum % 1: 6585 100 100 | 24 100 100 read write offset rpcs % cum % | rpcs % cum % 0: 6 0 0 | 1 4 4 1: 0 0 0 | 0 0 4 2: 0 0 0 | 0 0 4 4: 0 0 0 | 0 0 4 8: 0 0 0 | 0 0 4 16: 5 0 0 | 0 0 4 32: 8 0 0 | 0 0 4 64: 19 0 0 | 0 0 4 128: 32 0 1 | 0 0 4 256: 73 1 2 | 0 0 4 512: 137 2 4 | 0 0 4 1024: 259 3 8 | 1 4 8 2048: 584 8 17 | 2 8 16 4096: 1114 16 33 | 4 16 33 8192: 2232 33 67 | 8 33 66 16384: 2116 32 100 | 8 33 100 llite.lustre-ffff88012a6a0000.read_ahead_stats= snapshot_time 1748982510.582106567 secs.nsecs start_time 1748982492.742948297 secs.nsecs elapsed_time 17.839158270 secs.nsecs hits 98775 samples [pages] misses 6585 samples [pages] readpage_not_consecutive 9991 samples [pages] zero_size_window 98775 samples [pages] failed_to_fast_read 6585 samples [pages]