[ARVADOS] updated: 1.3.0-2462-g9d4be0f5a

[Git user]

Summary of changes:
 lib/config/generated_config.go | 17 +++++++++++++----
 1 file changed, 13 insertions(+), 4 deletions(-)

       via  9d4be0f5a330030fbb0df4304e74597f26e99fd1 (commit)
      from  66fe512eed4a69d56fbd1f46a8aeb191f78fe686 (commit)

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commit 9d4be0f5a330030fbb0df4304e74597f26e99fd1
Author: Ward Vandewege <ward at jhvc.com>
Date:   Fri Apr 10 08:56:56 2020 -0400

    Fix tests.
    
    refs #16326
    
    Arvados-DCO-1.1-Signed-off-by: Ward Vandewege <ward at jhvc.com>

diff --git a/lib/config/generated_config.go b/lib/config/generated_config.go
index 0194b02f5..4a8d7024f 100644
--- a/lib/config/generated_config.go
+++ b/lib/config/generated_config.go
@@ -190,12 +190,21 @@ Clusters:
       MaxItemsPerResponse: 1000
 
       # Maximum number of concurrent requests to accept in a single
-      # service process, or 0 for no limit. Currently supported only
-      # by keepstore.
+      # service process, or 0 for no limit.
       MaxConcurrentRequests: 0
 
-      # Maximum number of 64MiB memory buffers per keepstore server
-      # process, or 0 for no limit.
+      # Maximum number of 64MiB memory buffers per Keepstore server process, or
+      # 0 for no limit. When this limit is reached, up to
+      # (MaxConcurrentRequests - MaxKeepBlobBuffers) HTTP requests requiring
+      # buffers (like GET and PUT) will wait for buffer space to be released.
+      # Any HTTP requests beyond MaxConcurrentRequests will receive an
+      # immediate 503 response.
+      #
+      # MaxKeepBlobBuffers should be set such that (MaxKeepBlobBuffers * 64MiB
+      # * 1.1) fits comfortably in memory. On a host dedicated to running
+      # Keepstore, divide total memory by 88MiB to suggest a suitable value.
+      # For example, if grep MemTotal /proc/meminfo reports MemTotal: 7125440
+      # kB, compute 7125440 / (88 * 1024)=79 and configure MaxBuffers: 79
       MaxKeepBlobBuffers: 128
 
       # API methods to disable. Disabled methods are not listed in the

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