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Even with 10 shards on builders, it still takes about ~2.5 minutes per shard (and getting slower all the time as the test/ directory grows). I'm currently experimenting with massively sharding out testing on Cloud Run (each dist test & normal TestFoo func all running in parallel), and in such a setup, 2.5 minutes is an eternity. I'd like to increase that dist test's sharding from 10 to more like 1,000. Updates golang/go#31834 Change-Id: I8b02989727793b5b5b2013d67e1eb01ef4786e28 Reviewed-on: https://go-review.googlesource.com/c/go/+/175297 Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org>
60 lines
2.1 KiB
Bash
Executable File
60 lines
2.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright 2009 The Go Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style
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# license that can be found in the LICENSE file.
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# Environment variables that control run.bash:
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#
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# GO_TEST_SHARDS: number of "dist test" test shards that the
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# $GOROOT/test directory will be sliced up into for parallel
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# execution. Defaults to 1, unless GO_BUILDER_NAME is also specified,
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# in which case it defaults to 10.
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#
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# GO_BUILDER_NAME: the name of the Go builder that's running the tests.
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# Some tests are conditionally enabled or disabled based on the builder
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# name or the builder name being non-empty.
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set -e
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eval $(go env)
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export GOROOT # the api test requires GOROOT to be set.
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# We disallow local import for non-local packages, if $GOROOT happens
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# to be under $GOPATH, then some tests below will fail. $GOPATH needs
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# to be set to a non-empty string, else Go will set a default value
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# that may also conflict with $GOROOT. The $GOPATH value doesn't need
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# to point to an actual directory, it just needs to pass the semantic
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# checks performed by Go. Use $GOROOT to define $GOPATH so that we
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# don't blunder into a user-defined symbolic link.
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export GOPATH=/dev/null
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unset CDPATH # in case user has it set
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export GOBIN=$GOROOT/bin # Issue 14340
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unset GOFLAGS
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unset GO111MODULE
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export GOHOSTOS
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export CC
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# no core files, please
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ulimit -c 0
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# Raise soft limits to hard limits for NetBSD/OpenBSD.
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# We need at least 256 files and ~300 MB of bss.
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# On OS X ulimit -S -n rejects 'unlimited'.
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#
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# Note that ulimit -S -n may fail if ulimit -H -n is set higher than a
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# non-root process is allowed to set the high limit.
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# This is a system misconfiguration and should be fixed on the
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# broken system, not "fixed" by ignoring the failure here.
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# See longer discussion on golang.org/issue/7381.
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[ "$(ulimit -H -n)" = "unlimited" ] || ulimit -S -n $(ulimit -H -n)
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[ "$(ulimit -H -d)" = "unlimited" ] || ulimit -S -d $(ulimit -H -d)
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# Thread count limit on NetBSD 7.
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if ulimit -T &> /dev/null; then
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[ "$(ulimit -H -T)" = "unlimited" ] || ulimit -S -T $(ulimit -H -T)
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fi
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exec go tool dist test -rebuild "$@"
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