5f760b7dcc
When setting RTE_MAX_LCORES to the maximum value supported by ppc
hardware (1536), the lcores_autotest may timeout after 30 seconds
because the test takes nearly 60 seconds to complete. Set max_lcores to
a lower value because the maximum value is unlikely to be seen in any
production systems and to eliminate the quick test timeout error.
Bugzilla ID: 684
Fixes: db1f2f8a9f ("config: increase maximum lcores for ppc")
Cc: stable@dpdk.org
Signed-off-by: David Christensen <drc@linux.vnet.ibm.com>
Acked-by: Luca Boccassi <bluca@debian.org>
35 lines
1.5 KiB
Meson
35 lines
1.5 KiB
Meson
# SPDX-License-Identifier: BSD-3-Clause
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# Copyright(c) 2018 Luca Boccassi <bluca@debian.org>
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if not dpdk_conf.get('RTE_ARCH_64')
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error('Only 64-bit compiles are supported for this platform type')
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endif
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dpdk_conf.set('RTE_ARCH', 'ppc_64')
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dpdk_conf.set('RTE_ARCH_PPC_64', 1)
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# RHEL 7.x uses gcc 4.8.X which doesn't generate code for Power 9 CPUs,
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# though it will detect a Power 9 CPU when the "-mcpu=native" argument
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# is used, resulting in a build failure.
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power9_supported = cc.has_argument('-mcpu=power9')
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if not power9_supported
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machine = 'power8'
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machine_args = ['-mcpu=power8', '-mtune=power8']
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dpdk_conf.set('RTE_MACHINE','power8')
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endif
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# Certain POWER9 systems can scale as high as 1536 LCORES, but setting such a
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# high value can waste memory, cause timeouts in time limited autotests, and is
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# unlikely to be used in many production situations. Similarly, keeping the
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# default 64 LCORES seems too small as most POWER9 dual socket systems will have
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# at least 128 LCORES available. Set RTE_MAX_LCORE to 128 for POWER systems as
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# a compromise.
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dpdk_conf.set('RTE_MAX_LCORE', 128)
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# POWER systems do not allocate NUMA nodes sequentially. A dual socket system
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# will have CPUs associated with NUMA nodes 0 & 8, so ensure that the second
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# NUMA node will be supported by setting RTE_MAX_NUMA_NODES to 16. High end
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# systems can scale even higher with as many as 32 NUMA nodes.
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dpdk_conf.set('RTE_MAX_NUMA_NODES', 16)
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dpdk_conf.set('RTE_CACHE_LINE_SIZE', 128)
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