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runqemu: time the copy to tmpfs

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Measure and display the time it takes to copy the rootfs to its new
location (usually in tmpfs) to try to understand whether it sometimes takes
a lot of time on the autobuilders.

(From OE-Core rev: be213114c1349e02ca48fd617a6c3badae8aa101)

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Alexandre Belloni 2021-06-03 17:23:08 +02:00 committed by Richard Purdie
parent ae7595a603
commit 998d23a2c6
1 changed files with 4 additions and 1 deletions
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5
scripts/runqemu
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@ -18,6 +18,7 @@ import shutil
import glob
import configparser
import signal
import time
class RunQemuError(Exception):
"""Custom exception to raise on known errors."""
@ -1201,8 +1202,10 @@ class BaseConfig(object):
tmpfsdir = os.environ.get("RUNQEMU_TMPFS_DIR", None)
if self.snapshot and tmpfsdir:
newrootfs = os.path.join(tmpfsdir, os.path.basename(self.rootfs)) + "." + str(os.getpid())
logger.info("Copying rootfs to %s" % newrootfs)
copy_start = time.time()
shutil.copyfile(self.rootfs, newrootfs)
#print("Copying rootfs to tmpfs: %s" % newrootfs)
logger.info("Copy done in %s seconds" % (time.time() - copy_start))
self.rootfs = newrootfs
# Don't need a second copy now!
self.snapshot = False