Re: Locking comment on shrink_caches()

Dipankar Sarma (
Wed, 26 Sep 2001 10:34:24 +0530

In article <> David S. Miller wrote:
> From: Rik van Riel <>
> Date: Tue, 25 Sep 2001 17:24:21 -0300 (BRST)
> Or were you measuring loads which are mostly read-only ?

> When Kanoj Sarcar was back at SGI testing 32 processor Origin
> MIPS systems, pagecache_lock was at the top.

John Hawkes from SGI had published some AIM7 numbers that showed
pagecache_lock to be a bottleneck above 4 processors. At 32 processors,
half the CPU cycles were spent on waiting for pagecache_lock. The
thread is at -


Dipankar Sarma  <> Project:
Linux Technology Center, IBM Software Lab, Bangalore, India.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at