* mellanox connect x 5 drops when cache full
@ 2022-01-19 14:27 Yaron Illouz
2022-01-20 12:58 ` Matan Azrad
0 siblings, 1 reply; 2+ messages in thread
From: Yaron Illouz @ 2022-01-19 14:27 UTC (permalink / raw)
To: dev; +Cc: Matan Azrad
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Hi
I am using multiqueue with RSS to read from MT27800 Family [ConnectX-5] 1017
My application receive traffic, and write some data to disk. As a result I/O write is cached in linux memory.
When the server memory is completely cache ( I know it is still available) I start seeing drops at nic.
If I delete the data from disk every minute the cached memory is released to free and and no drops at nic.
How can I avoid the drops at nic?
total used free shared buff/cache available
Mem: 125G 77G 325M 29M 47G 47G
Swap: 8.0G 256K 8.0G
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^ permalink raw reply [flat|nested] 2+ messages in thread* RE: mellanox connect x 5 drops when cache full 2022-01-19 14:27 mellanox connect x 5 drops when cache full Yaron Illouz @ 2022-01-20 12:58 ` Matan Azrad 0 siblings, 0 replies; 2+ messages in thread From: Matan Azrad @ 2022-01-20 12:58 UTC (permalink / raw) To: Yaron Illouz, dev [-- Attachment #1: Type: text/plain, Size: 967 bytes --] Hi Yaron Maybe the caching takes PCI bandwidth? Matan From: Yaron Illouz <yaroni@radcom.com> Sent: Wednesday, January 19, 2022 4:27 PM To: dev@dpdk.org Cc: Matan Azrad <matan@nvidia.com> Subject: mellanox connect x 5 drops when cache full External email: Use caution opening links or attachments Hi I am using multiqueue with RSS to read from MT27800 Family [ConnectX-5] 1017 My application receive traffic, and write some data to disk. As a result I/O write is cached in linux memory. When the server memory is completely cache ( I know it is still available) I start seeing drops at nic. If I delete the data from disk every minute the cached memory is released to free and and no drops at nic. How can I avoid the drops at nic? total used free shared buff/cache available Mem: 125G 77G 325M 29M 47G 47G Swap: 8.0G 256K 8.0G [-- Attachment #2: Type: text/html, Size: 4546 bytes --] ^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2022-01-20 12:58 UTC | newest] Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2022-01-19 14:27 mellanox connect x 5 drops when cache full Yaron Illouz 2022-01-20 12:58 ` Matan Azrad
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