> > And if anyone figures out how to configure an x86_64 Linux to use > > PAGE_SIZE of 64K or larger let me know... > I am using physical platform with arm cpu and aarch64 toolchain, > perhaps try qemu-system-aarch64 later. For reference using qemu-system-aarch64 + linux-5.6.4 + 64KB page to test cifs read, this patch can improve cifs read performance: with patch: read throughput 39 MB/s, SMB read IO size 4MB / # dd if=/mnt/cifs/1G.img of=/dev/null bs=4M count=256 256+0 records in 256+0 records out 1073741824 bytes (1.0GB) copied, 25.982352 seconds, 39.4MB/s [~] # strace -p 23934 sendfile(38, 32, [297795584] => [301989888], 4194304) = 4194304 without patch: read throughput 18 MB/s, SMB read IO size 16KB / # dd if=/mnt/cifs/1G.img of=/dev/null bs=4M count=256G 256+0 records in 256+0 records out 1073741824 bytes (1.0GB) copied, 54.367686 seconds, 18.8MB/s [~] <0> strace -p 15786 sendfile(38, 32, [452984832] => [453001216], 16384) = 16384 This link is a easy way to compile aarch64 linux kernel with page size 64KB , a simple rootfs with busybox, and run it on qemu-system-aarch64: https://docs.google.com/document/d/1NSVd-dib_asugCZHmZgohLZXHxV25ftzYtUDSppY3hA/edit?usp=sharing -- Regards, Jones Syue | 薛懷宗 QNAP Systems, Inc.
