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Always use the number of CPUS for resolver->ntasks

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Since the fctx hash table is now self-resizing, and resolver tasks are
selected to match the thread that created the fetch context, there
shouldn't be any significant advantage to having multiple tasks per CPU;
a single task per thread should be sufficient.

Additionally, the fetch context is always pinned to the calling netmgr
thread to minimize the contention just to coalesced fetches - if two
threads starts the same fetch, it will be pinned to the first one to get
the bucket.
This commit is contained in:
Evan Hunt
2022-05-07 20:58:19 -07:00
committed by Ondřej Surý
parent 857f3bede3
commit 6936db2f59
9 changed files with 57 additions and 62 deletions
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lib/isc/netmgr/netmgr-int.h
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@@ -38,8 +38,6 @@
#include <isc/util.h>
#include <isc/uv.h>
#define ISC_NETMGR_TID_UNKNOWN -1
/* Must be different from ISC_NETMGR_TID_UNKNOWN */
#define ISC_NETMGR_NON_INTERLOCKED -2