1,The requests from the Readdir-ahead Xlator wind down to next Xlator ,did they send to a server or brodcast to all the servers? 2,As you have said, the preload is in progress, a readdir from application waits for its completion. And If I change the buffer(request) size, will the application wait for a long time? Could it be a stream, the readdir from application fetches dentries in the buffer, and the readdir-ahead xlator pre-fetches dentries from the servers? 3,When does it can be a larger buffer, like io-cache,which cached the data/dentries read before? As you know, ls is so slow.
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