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NAME | C SYNOPSIS | Perl SYNOPSIS | Python SYNOPSIS | DESCRIPTION | DIAGNOSTICS | SEE ALSO | COLOPHON |
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PMIWRITE(3) Library Functions Manual PMIWRITE(3)
pmiWrite, pmiWriteNow - flush data to a LOGIMPORT archive
#include <pcp/pmapi.h>
#include <pcp/import.h>
int pmiWrite(unsigned long long sec, unsigned int nsec);
int pmiWriteNow(void);
cc ... -lpcp_import -lpcp
use PCP::LogImport;
pmiWrite($sec, $nsec);
pmiWriteNow();
from pcp import pmi
log.pmiWrite(sec, nsec)
As part of the Performance Co-Pilot Log Import API (see
LOGIMPORT(3)), these routines flush accumulated data values out to
the PCP archive.
The data values and associated metadata have previously been built
up using calls to pmiAddMetric(3), pmiAddInstance(3),
pmiPutValue(3) and pmiPutValueHandle(3).
The current set of data values and any new metadata is written to
the archive with the specified timestamp in the source timezone of
the archive (see pmiSetTimezone(3)).
pmiWrite accepts a nanosecond-resolution timestamp: seconds since
the Unix epoch as a 64-bit unsigned integer (sec) and nanoseconds
within that second (nsec). A sec value of zero writes a record
with a Unix epoch timestamp (1970-01-01 00:00:00 UTC).
pmiWriteNow writes a record timestamped with the current wall-
clock time. In Python, log.pmiWrite(0) (integer zero with no nsec
argument) is equivalent to calling pmiWriteNow.
Returns zero on success, else a negative value that can be turned
into an error message by calling pmiErrStr(3).
LOGIMPORT(3), pmiAddInstance(3), pmiAddMetric(3), pmiErrStr(3),
pmiPutValue(3), pmiPutValueHandle(3), pmiPutText(3),
pmiPutLabel(3) and pmiSetTimezone(3).
This page is part of the PCP (Performance Co-Pilot) project. In‐
formation about the project can be found at ⟨http://www.pcp.io/⟩.
If you have a bug report for this manual page, send it to
pcp@groups.io. This page was obtained from the project's upstream
Git repository ⟨https://github.com/performancecopilot/pcp.git⟩ on
2026-08-04. (At that time, the date of the most recent commit
that was found in the repository was 2026-08-04.) If you discover
any rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page,
or you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a
mail to man-pages@man7.org
Performance Co-Pilot PMIWRITE(3)
Pages that refer to this page: logimport(3), pmiputlabel(3), pmiputmark(3), pmiputresult(3), pmiputtext(3), pmiputvalue(3), pmiputvaluehandle(3), pmisetimportprogram(3), pmisetvolumesize(3), pmistart(3)
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HTML rendering created 2026-09-09 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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