Messages in this thread | | | Date | Sun, 5 Jul 2020 03:16:31 +0100 | From | Matthew Wilcox <> | Subject | Re: [PATCH 0/3] readfile(2): a new syscall to make open/read/close faster |
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On Sun, Jul 05, 2020 at 04:06:22AM +0200, Jan Ziak wrote: > Hello > > At first, I thought that the proposed system call is capable of > reading *multiple* small files using a single system call - which > would help increase HDD/SSD queue utilization and increase IOPS (I/O > operations per second) - but that isn't the case and the proposed > system call can read just a single file. > > Without the ability to read multiple small files using a single system > call, it is impossible to increase IOPS (unless an application is > using multiple reader threads or somehow instructs the kernel to > prefetch multiple files into memory).
What API would you use for this?
ssize_t readfiles(int dfd, char **files, void **bufs, size_t *lens);
I pretty much hate this interface, so I hope you have something better in mind.
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