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@@ -1,9 +1,23 @@
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#!/bin/bash
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+# Get the maximum allowable number of open files per process on the host
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+nr_open=`sysctl fs.nr_open | cut -d' ' -f3`
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+
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+# Ensure it's large enough; for 2^20 clients, the client simulator
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+# process will need two file descriptors per client (one socket to
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+# its ingestion server and one to its storage server), plus a handful
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+# that don't depend on the number of clients (logfiles, etc.)
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+needed_nr_open=$(((1<<21) + 10))
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+
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+if [ $nr_open -lt $needed_nr_open ]; then
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+ echo "sysctl fs.nr_open is too low: currently $nr_open; needed $needed_nr_open" >&2
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+ exit 1
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+fi
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+
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# The SYS_NICE capability allows you to use numactl to pin processes to
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# NUMA nodes and/or individual cores
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docker run -d --cap-add SYS_NICE --rm --device /dev/sgx_enclave \
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--device /dev/sgx_provision --name ${TEEMS_DOCKER_PREFIX}teems \
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- --ulimit nofile=10485760:10485760 \
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+ --ulimit nofile=${needed_nr_open}:${needed_nr_open} \
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-h ${TEEMS_DOCKER_PREFIX}teems -t ${TEEMS_DOCKER_PREFIX}teems bash
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