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# coding=utf-8 # # Copyright © Cloud Linux GmbH & Cloud Linux Software, Inc 2010-2019 All Rights Reserved # # Licensed under CLOUD LINUX LICENSE AGREEMENT # http://cloudlinux.com/docs/LICENSE.TXT
import mmap
__author__ = 'shaman'
# bytes count in big values (kilobytes, megabytes, etc.) BYTE_SIZES = [ {"value": 1099511627776, "title": "TB"}, {"value": 1073741824, "title": "GB"}, {"value": 1048576, "title": "MB"}, {"value": 1024, "title": "KB"} ]
POWERS_OF_1000_SIZES = [ {"value": 1000000000000, "title": "T"}, {"value": 1000000000, "title": "G"}, {"value": 1000000, "title": "M"}, {"value": 1000, "title": "K"} ]
PAGE_SIZE = mmap.PAGESIZE # Memory page size; as usualy 4096
def convert(value, powers_of_1000, for_graph): """ Convert bytes value to human readable format (e.g., 4K 347M 7G) for write it on graphics. Return 2-digit value - float or digital. Depends on original value. The rules are: For graphs: print int if it is an int or it is more then 10 Not for graphs: if it is > 100, or units are B or no units (KB/MB/GB/K/M/G will print as float) >>> convert(12345678, False, True) '11MB' >>> convert(1234567, False, True) '1.2MB' """ result = float(value) if powers_of_1000: sizes_list = POWERS_OF_1000_SIZES title = '' else: sizes_list = BYTE_SIZES title = 'B' for item in sizes_list: if value >= item["value"]: result = float(value) / item["value"] title = item["title"] break if (for_graph and (result >= 10 or result.is_integer())) or result >= 100 or \ ((title == 'B' or title == '') and not for_graph): return f"{int(result)}{title}" else: return f"{result:.1f}{title}"
def convert_bytes(s_bytes): return convert(s_bytes, False, False)
def convert_bytes_for_graph(s_bytes): return convert(s_bytes, False, True)
def convert_powers_of_1000(value): return convert(value, True, False)
def convert_powers_of_1000_for_graph(value): return convert(value, True, True)
def mempages_to_bytes(pages): """ Convert memory pages to bytes :param int pages: memory pages :return int: bytes """ return int(round(pages * PAGE_SIZE))
def dbgov_io_bytes_value(io_read_mb, io_write_mb): """ Convert two (read and write) io values (in MB) from MySQL Governor to single value in bytes :param io_read_mb: IO read value in MB :param io_write_mb: IO write value in MB :return: IO value in bytes """ return int((io_read_mb + io_write_mb) * 1024 * 1024)
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