Am 12.07.22 um 09:26 schrieb Florian Weimer:
* Marius Schwarz:
I have just create(d/ not finished yet, started 15 minutes ago) a ~2.5
GB rpm and found, that rpmbuild is an extrem bottleneck.
IMHO, this is caused by a fileread function which reads files in 32k
blocks, which is very slow and extrem IO intensive. The result is a
task running at 1 core at 100% perma. With changes to larger chunks,
we can speed up so many build tasks on the farm.
That's unlikely. 32K is not a small buffer size.
It's more likely that time is spent during compression.
In this case, a pigz , pbiz2 or other parallel compression mode, would
be helpful.
strace shouldn't see a system call here because clock_gettime should be
handled in the vDSO. This suggests something is wrong with the system
(unless it's some obscure variant that really doesn't have vDSO support).
Thanks,
Florian
it's a "normal" ( desktopless ) F 35 on a Xeon E5-2620v4 .
best regards,
Marius Schwarz
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