On Thu, Jan 21, 2021 at 06:49:39PM +0530, Gautham Ananthakrishna wrote:
> We tested this patch set recently and found it limiting negative dentry to a
> small part of total memory. The following is the test result we ran on two
> types of servers, one is 256G memory with 24 CPUS and another is 3T
Ping? These patches are looking pretty good in our internal testing.
On Thu, Jan 21, 2021 at 06:49:39PM +0530, Gautham Ananthakrishna wrote:
> For most filesystems result of every negative lookup is cached, content of
> directories is usually cached too. Production of negative dentries isn't
> li
For most filesystems result of every negative lookup is cached, content of
directories is usually cached too. Production of negative dentries isn't
limited with disk speed. It's really easy to generate millions of them if
system has enough memory.
Getting this memory back ins't that easy because s
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