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This test reveals the patters of the batching of consecutive write operations on a file-system session. It issues 100 writes of one byte each, which should ideally result in large batches of operations submitted to the file-system session at once. The run script performs the write operations through a chain of two VFS servers, thereby exercising the write batching of both the libc and the intermediate VFS server. Issue #4697
87 lines
1.9 KiB
Plaintext
87 lines
1.9 KiB
Plaintext
build {
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core lib/ld init timer
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lib/vfs lib/vfs_audit server/vfs
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lib/libc lib/posix test/libc_many_writes
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}
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create_boot_directory
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install_config {
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<config>
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<parent-provides>
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<service name="CPU"/>
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<service name="IRQ"/>
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<service name="IO_MEM"/>
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<service name="IO_PORT"/>
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<service name="LOG"/>
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<service name="PD"/>
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<service name="RM"/>
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<service name="ROM"/>
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</parent-provides>
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<default-route>
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<any-service> <parent/> <any-child/> </any-service>
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</default-route>
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<default caps="128"/>
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<start name="timer">
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<resource name="RAM" quantum="1M"/>
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<provides> <service name="Timer"/> </provides>
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</start>
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<start name="ramfs">
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<binary name="vfs"/>
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<resource name="RAM" quantum="4M"/>
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<provides> <service name="File_system"/> </provides>
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<config>
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<vfs>
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<dir name="ram"> <ram/> </dir>
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<dir name="audit"> <audit path="ram"/> </dir>
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</vfs>
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<default-policy root="/audit" writeable="yes"/>
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</config>
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</start>
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<start name="fs">
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<binary name="vfs"/>
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<resource name="RAM" quantum="4M"/>
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<provides> <service name="File_system"/> </provides>
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<config>
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<vfs>
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<dir name="fs"> <fs/> </dir>
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<dir name="audit"> <audit path="fs"/> </dir>
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</vfs>
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<default-policy root="/audit" writeable="yes"/>
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</config>
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<route>
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<service name="File_system"> <child name="ramfs"/> </service>
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<any-service> <parent/> <any-child/> </any-service>
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</route>
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</start>
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<start name="test-libc_many_writes" caps="1000">
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<resource name="RAM" quantum="4M"/>
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<config>
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<vfs>
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<dir name="rw"> <fs/> </dir>
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<dir name="dev"> <log/> </dir>
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</vfs>
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<libc stdout="/dev/log" stderr="/dev/log"/>
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<arg value="test"/>
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</config>
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<route>
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<service name="File_system"> <child name="fs"/> </service>
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<any-service> <parent/> <any-child/> </any-service>
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</route>
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</start>
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</config>
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}
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build_boot_image [build_artifacts]
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append qemu_args " -nographic "
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run_genode_until "child .* exited with exit value 0.*\n" 20
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