Why kernel.org is slow [LWN.net]

Why kernel.org is slow

Posted Jan 11, 2007 13:48 UTC (Thu) by etienne_lorrain@yahoo.fr (guest, #38022)
In reply to: Why kernel.org is slow by davecb
Parent article: Why kernel.org is slow

If the problem is linked to read/write access and locks, would it be good (when there is a lot of read and few writes like for the Linux versions), to keep the filesystem mounted read-only most of the time?
I mean, keep the partition containing data read-only, then to update do:
mount -o remount,rw /server/data
cp -ra new_linux_version /server/data
sync
mount -o remount,ro /server/data

Just curious,
Etienne.

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Why kernel.org is slow

Posted Jan 11, 2007 16:01 UTC (Thu) by davecb (subscriber, #1574) [Link]

Hmmn, does someone know if Linux directory locks are never held
on read-only media? I know zfs locks at the directory-entry
level (see http://src.opensolaris.org/source/xref/loficc/crypto/usr/... ) but UFSs generally lock the in-memory directory, and don't know if it
comes from RO or RW media...
Anyone know ext3 that well?

--dave