d571123afd
We get error from bc command when we run the script on >34 ncpus, to prevent the issue add a python script to generate cpuset parameter. Fixes #1824 Signed-off-by: Takuya ASADA <syuu@scylladb.com> Message-Id: <1478887624-12737-1-git-send-email-syuu@scylladb.com>
51 lines
1.4 KiB
Python
Executable File
51 lines
1.4 KiB
Python
Executable File
#!/usr/bin/python3
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#
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# Copyright 2016 ScyllaDB
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#
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#
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# This file is part of Scylla.
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#
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# Scylla is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Scylla is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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#
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#
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# hex2list.py is cpuset format converter (see cpuset(7)).
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# It reads "Mask Format" parameter from stdin,
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# outputs "List Format" parameter to stdout.
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#
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# Here's example to convert '00000000,000e3862' to List Format:
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# $ echo 00000000,000e3862 | hex2list.py
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# 1,5-6,11-13,17-19
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#
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hex_str = input().replace("0x", "").replace(",", "")
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hex_int = int(hex_str, 16)
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bin_str = "{0:b}".format(hex_int)
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bin_len = len(bin_str)
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cpu_list = []
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i = 0
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while i < bin_len:
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if 1 << i & hex_int:
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j = i
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while j + 1 < bin_len and 1 << j + 1 & hex_int:
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j += 1
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if j == i:
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cpu_list.append(str(i))
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else:
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cpu_list.append("{0}-{1}".format(i, j))
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i = j
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i += 1
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print(",".join(cpu_list))
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